I came early today to the office

Found the office locked

Need fingerprint of Project Manager/CTO

With my mouth saying ah.. i blew hot air into the finger print sensor, 5 to 6 times

There u go.office door opened with welcome message

just hacked the system

Genius me

Mathematician girl invites me to code some lines.
I arrive at her flat and she was alone so some part of me thought ehem. Anyway i took a look at the program first.
Me: so... it's a date?
Her: no im using cosmic radiation.
Me: huh?
Her: yeah accessing a value from a sensor gives a..

(Apparently she thought i was asking about the Random Function she was using, which usually uses the date)

Tldr :
Office Building : 1
Population: 5000
Number of PC users: 5000
No of Spare mice: 0

Day 1:
Training period commences.
My mouse laser sensor doesn't work.

Solution: Use this mouse to log in to your system.
Open the company portal.
Connect to vpn.
Enter username password.
Create a ticket for mouse replacement.
Done.

Day 3
I bring my own mouse.
Confiscated at security.
Becomes a security violation.

Day 9
I get a call from helpdesk.
Agent- what is the problem?
Me- my mouse is not working.
Agent- why?
Me- what do you mean? Something is wrong with the sensor.
Agent- clean the sensor.
Disconnects call.
Marks ticket as resolved.
Me- WTF just happened!

Naturally, I escalate the issue.

Day 15
Level 2 Agent- what happened? Why have you escalated the issue?
Me- I need a mouse, waiting since 2 weeks.
Him- No mouse is available
Me- you don't have a single spare mouse available in an office with 5000 PC users?
Him- no they're out of stock.
Me- when will it be back in stock?
Him- we will 'soon' launch a tender for quotations from sellers.
Me- time?
Him- 1 week.

Day 34

I email the head of supplies for the city office. Next day I get a used super small mouse, which doesn't have a left button. Anyways, I've given up hope now.

Day 45
I become a master at keyboard shortcuts.
Finish my training.
Get transferred to another city.
No mouse till date.

Surprisingly, this was one of the top recruiters in my country. Never knew, MNCs can be so so inefficient for such simple tasks.
Start-ups are way better in this regard. Latest tech, small community, minimal bureaucracy and a lot of respect and things to learn.

Just did some initial programming of my Arduino to run the alcohol sensor.. seems to be working well. So, looks like it's time for testing 🤤 cheers!

Participated in an IEEE Hackathon where we built a line following robot. We were the slowest, but we had the most accuracy.

The image is our first attempt at getting it to work, consequently, we were the first team to actually get a prototype finished and working. Other people were trying to cram as many sensors as possible. We stuck with one, and 47 lines of code to make it work. Everyone else had more than 2 sensors and I can only imagine how much code they had.

carbon monoxide sensor was triggered when someone farted.

is this a bug or a feature?

I have to share because I'm so confused at the moment. After troubleshooting for months trying to figure out why my laptop would randomly go into sleep mode, as I was typing. (Imagine my frustrations working on exam projects to have the screen just go black on me every 30 seconds.)

Today I found a post on the Dell forums by another person with the same problem. Apparently a magnetic closure on my bracelet triggered a sensor to think I had shut the lid on my laptop. What. The. Fuck. Guess that explains why it would only happen sometimes, as I don't wear this bracelet often 🙃🔫 definitely the funniest and weirdest problem I've ever had with a laptop.

I fucking hate Internet of Things, I think that it's a ridiculous idea to connect things, that work perfectly fine, to the internet.
The 'convenience' you get is minimalistic and most of the time non existent.
It is also often insanely insecure and expensive. The burdans it brings with it most of the time just outweigh the positive sides of it.

Now today happened something that made me hate it even more. Today was the First Lego Lego (Lego competition with ev3 robots, etc.) and one part of the tournament is to find a solution for a given problem. This year the general topic was hydro-dynamics and so the problem was how you can reduce water usage and 'save' water.

Our idea was to make reusable coffee cups and give them to the local coffee shops. One time use paper cups use take around 400ml water when produced) Basically you buy a cup once for 5 bucks and you get your coffee served in it. After drinking the coffee you return the cup to a local cafe and get a chip as pawn. When you buy your next coffee, you give them your chip and get it served in another reusable cup. The are at the moment already around 1000 cups going around the city.

Now this was our idea and we got ranked third. I am not too mad about our rank but what really drives me fucking mad is the team who ranked first.

Their idea was to make a pump (using an arduino) and a humidity sensor which you stick into a plant and the pump pumps water when the plant is too dry.
However (you probably guessed it already) they went a step further and connected it to the internet. They also made a web 'interface' for it so you can control the pump with your smartphone / computer / smartwatch / tv / whatever the fuck is connected to the internet nowadays 'thanks' to the iot 'revolution'.

So it is a pump that waters your plant when it is too dry BUT it is also connected to the internet.

WHY THE FUCK DOES THIS HAVE TO BE CONNECTED TO THE INTERNET.

"Oh look it is connected to the internet, wow awesome, oh it is also 'smart'. oh cooool. Nice I don't have to water my plants anymore"

A funny thing is that one of my friends built basically the same thing without connecting it to the internet. He built a small box with a pump and a humidity sensor that measures if the dirt is too dry and then waters the plant. It checks every few hours and the also is a small 16x2 LCD and a knob that you can turn to control how much water it should give the plant each time it waters it. He built it and I programmed it for him. Works perfectly fine and I don't see any reason why there should be any need to connect something like this to the internet.

Anyway we got ranked third, they first. I guess we should connect our coffee cups to the internet in some way ...

Fingerprint sensor is insecure

-gf can open your phone when you are asleep
-same with chloroform, unconscious, then use fingers
-can cut your fingers if it leads to that.

Fine I agree....but how secure is the face ID ??

-all of the same points can be applied to it.

I played a prank on my coworkers. Covered the bottom sensor of the mouse with part of a post-it note. I went home for the night.

The following morning My boss was the only one in at first and spent an hour unplugging and plugging it back in. He was just about to go out to buy another mouse when someone else came in, immediately looked at the bottom, chuckled to himself and took it off.

Want to finish my little friend for a long time now. He can dance Michael Jackson's moonwalk for now.
Idea was to use the sonar sensor to switch dancing styles but he is still blind :(

> Be me
> Buy a laptop with fingerprint sensor
> It has FreeDOS on it
> Install Pop!_OS
> Get excited about using your fingerprint for sudo
> "No devices found"
> Search for driver
> Non existent
FUCK YOU SYNAPTICS

It's enough. I have to quit my job.

December last year I've started working for a company doing finance. Since it was a serious-sounding field, I tought I'd be better off than with my previous employer. Which was kinda the family-agency where you can do pretty much anything you want without any real concequences, nor structures. I liked it, but the professionalism was missing.

Turns out, they do operate more professionally, but the intern mood and commitment is awful. They all pretty much bash on eachother. And the root cause of this and why it will stay like this is simply the Project Lead.

The plan was that I was positioned as glue between Design/UX and Backend to then make the best Frontend for the situation. Since that is somewhat new and has the most potential to get better. Beside, this is what the customer sees everyday.

After just two months, an retrospective and a hell lot of communication with co-workers, I've decided that there is no other way other than to leave.

I had a weekly productivity of 60h+ (work and private, sometimes up to 80h). I had no problems with that, I was happy to work, but since working in this company, my weekly productivity dropped to 25~30h. Not only can I not work for a whole proper work-week, this time still includes private projects. So in hindsight, I efficiently work less than 20h for my actual job.

The Product lead just wants feature on top of feature, our customers don't want to pay concepts, but also won't give us exact specifications on what they want.
Refactoring is forbidden since we get to many issues/bugs on a daily basis so we won't get time.
An re-design is forbidden because that would mean that all Screens have to be re-designed.
The product should be responsive, but none of the components feel finished on Desktop - don't talk about mobile, it doesn't exist.
The Designer next to me has to make 200+ Screens for Desktop and Mobile JUST so we can change the primary colors for an potential new customer, nothing more. Remember that we don't have responsiveness? Guess what, that should be purposely included on the Designs (and it looks awful).
I may hate PHP, but I can still work with it. But not here, this is worse then any ecommerce. I have to fix legacy backend code that has no test coverage. But I haven't touched php for 4 years, letalone wrote sql (I hate it). There should be no reason whatsoever to let me do this kind of work, as FRONTEND ARCHITECT.

After an (short) analysis of the Frontend, I conclude that it is required to be rewritten to 90%. There have been no performance checks for the Client/UI, therefor not only the components behave badly, but the whole system is slow as FUCK! Back in my days I wrote jQuery, but even that shit was faster than the architecuture of this React Multi-instance app. Nothing is shared, most of the AppState correlate to other instances.

The Backend. Oh boy. Not only do we use an shitty outated open-source project with tons of XSS possibillities as base, no we clone that shit and COPY OUR SOURCES ON TOP. But since these people also don't want to write SQL, they tought using Symfony as base on top of the base would be an good idea.
Generally speaking (and done right), this is true. but not then there will be no time and not properly checked. As I said I'm working on Legacy code. And the more I look into it, the more Bugs I find. Nothing too bad, but it's still a bad sign why the webservices are buggy in general. And therefor, the buggyness has to travel into the frontend.

And now the last goodies:
- Composer itself is commited to the repo (the fucking .phar!)
- Deployments never work and every release is done manually
- We commit an "_TRASH" folder
- There is an secret ongoing refactoring in the root of the Project called "_REFACTORING" (right, no branches)
- I cannot test locally, nor have just the Frontend locally connected to the Staging webservices
- I am required to upload my sources I write to an in-house server that get's shared with the other coworkers
- This is the only Linux server here and all of the permissions are fucked up
- We don't have versions, nor builds, we use the current Date as build number, but nothing simple to read, nonono. It's has to be an german Date, with only numbers and has always to end with "00"
- They take security "super serious" but disable the abillity to unlock your device with your fingerprint sensor ON PURPOSE

My brain hurts, maybe I'll post more on this shit fucking cuntfuck company. Sorry to be rude, but this triggers me sooo much!

Had to program a microprocessor to count a pendulum swing, turns out that the only sensor I had for this wasn't working, implemented a function that simulated the swing and presented the projecto in less than 5 minutes so the teacher wouldn't notice

So this happened...phone somehow turned on in my pocket and the fingerprint sensor rubbed against the fabric a lot of times...didn't have access to my phone for FREAKING 2 HOURS!! Why should my phone get locked by the fingerprint sensor?? The way I see it, if you are someone else, you either have my finger...or you don't...like you could kill me and chop my hand off or be crafty and try and use my finger while I'm asleep or drugged...either way, it wouldn't take that many tries to unlock my phone 😒😒.

Between plague and smoke, spending way too much time indoors. Localised co2 got pretty high in the office my husband and I share and opening the windows is dicey during giant spider season even before the wildfires.

So as a result, I'm starting a little indoor garden in each room. The succulent are going to be hydro, and the prayer and snake plant will get soil so I have some place to dump my coffee grinds other than the rose garden. In the next month or so we also want to set up some living moss panels to help control the nitrogen balance.

And of course, obligatory rpi sensor suite and irrigation is inbound as well. That'll be a shared project. 😸

Had the Windows Insider Preview for a month or so to get Ubuntu Subsystem early back when it was Insider-only.

Turns out that your license policy changes when you use Preview builds: if your PC isn't updated to a certain build by checkpoints set throughout the year, your license expires and you have to reinstall Windows. No way to recover anything already on the device. So if you get Insider Preview and shut your laptop off for too long...

Thus began a killer combo attack on my Surface Pro 3.

While trying to figure out what was going on and loading up a recovery on a flash drive, the Surface Pro 3 BIOS was sitting idle behind me. On 100% CPU. The only reason I think this is that by the time I noticed the insane fan noise, the screen was hot enough to burn my finger as I tried to turn it off. The heat sensor triggered it to shut off before I could, though.

That heat sensor, however, won't turn it off if it's busy installing Windows, supposedly to keep anything from getting hopelessly corrupted. What followed we're 3 hours of fan whirring from a slab of metal hot enough to cook an egg with.

Windows is back and working. The battery indicator, however, melted during reinstallation. And the battery lasts an hour, max. Thankfully I'm not out of a tablet, but it seems to me that W10 is becoming more and more like malware, just waiting for you to activate one of it's delightful payloads.

Finished an MVP of my garage-opener-thingamajig!

Basically I decided I wanted to control my garage from my app. Retail solutions are expensive af. As a dev, the choice was easy!

RPI3
HC-SR04 sensor
DHT temperature sensor
5v Relay
Nativescript + Angular
Firebase

Result: i can open my garage anywhere, safely (sorta?) via firebase, and get push notifs when it gets opened (from hcsr04), which triggers the pi camera, while also getting live temp feeds (this one is kinda for the giggles and utterly pointless but NUMBERZ!)

Anyway - fun side project! First version of my app looks like this. Its very rough, and I have a couple more details I wanna display, but for a first time app I'm happy!

Been reading devRant for a while now and I have to say I'm sad about the way the future of the software engineering looks like. Everyone seems to have a lot of hatred towards certain techniques and/or platforms and sad to say, but you are missing a lot.

I have been in the biz for around 15 years and have worked on Win, Linux, Mac, Unix, Symbian, Embedded etc. using all sorts of tools and languages and I must say it has taught me a lot and given diversity on my career and I hope you could also open your mind and start educating yourselves. Theres a world behind your bubble!

Peace and love!

While attending a class for mobile app development a couple of months back, the day the teacher (T) unveiled the class project:
T: You must build an Android app. You can do whatever you want.
T: Don't overcomplicate though. For example, online servers won't be valued!
T: But don't make it too easy. For example, don't make a tic-tac-toe. That won't be valued!
T: And remember, you must use device sensors, like the camera, GPS, accelerometer ...
T: But don't just throw the sensor functionality if it doesn't make sense in the app you're building. That won't be valued either!
T: You have one week to think and send me a proposal.
Me: What the fuck do you want me to do then?

When my poor spatial skills and extremely random associations meet.
Colleague: How big is the sensor?
Me: Well, it's...ugh..about this...hmmm, bigger than the other one, but like...I don't know, like a small bible?

I kind of feel like I invested 2.5 years of my life trying to run away from being a hamster, and here I am in my PhD back in the hamster spot.
The moment I finish compiling some not-os-compatible package, I get a new one to tame. A day after perfecting a sensor integration, another sensor is thrown at me. I am the one who calibrate and tunes the MoCap system, including manufacturing the markers and ordering part. I make sure the robot is functional, from software to battery replacement.
I need to crawl on floors to collect data, while the rest of the lab uses public datasets.
I optimize C++ code, and then get asked to write unit tests and use a CI, while the rest of the lab just writes some subpar Python.
They are doing research and I am doing Cinderella work.
I shouldn't be punished because I get shit done, whether it 3D modeling, CMake voodoo or low-level programming.
Instead of encouraging other lab mates to develop skills, everything is thrown at me. Fuck that shit.

When working with hardware some mistakes can be literally painful. Thankfully this was all during undergrad and I'm only around computer hardware now lol.

>Misprogrammed a software kill switch so a sensor that should not have been sending data was actually sending data which caused the system to activate a piston that went WHAM! into the face of a teammate working on replacing some part of it...

>Misprogrammed a controller so it drew too much power from the supply and the puny supply wires literally burst into flame and fell across my arm.

>Spun a 9000rpm CNC spindle the wrong way and caused an attached screw to go rocketing upwards instead of downwards and almost break the (pretty expensive) thing (uh...we were trying to use it as a power screwdriver essentially but I set the rpm to about 100x what I wanted and the direction wrong so yeah).

>Switched a -1 with a +1 in a robot's control system sending it careening into a teammate's leg... let's just say mecanum wheels are paaaainful.

what the last windows update did to me:

- BROKE the fucking SPEAKERS so i have NO SOUND even WITH HEADPHONES. the only pair that work is a bluetooth one that i used before

- RESET ALL OF MY BIOS SETTINGS. this includes intel haxm so now the FUCKING AVD WON'T WORK.

- BROKE my FINGERPRINT SENSOR, so now i cant use the side of my pinky to login.

FUCK YOU MICROSOFT.
GO SUCK BILL GATES'S COCK.
DIE IN A HOLE.

In the before time (late 90s) I worked for a company that worked for a company that worked for a company that provided software engineering services for NRC regulatory compliance. Fallout radius simulation, security access and checks, operational reporting, that sort of thing. Given that, I spent a lot of time around/at/in nuclear reactors.

One day, we're working on this system that uses RFID (before it was cool) and various physical sensors to do a few things, one of which is to determine if people exist at the intersection of hazardous particles, gasses, etc.

This also happens to be a system which, at that moment, is reporting hazardous conditions and people at the top of the outer containment shell. We know this is probably a red herring or faulty sensor because no one is present in the system vs the access logs and cameras, but we have to check anyways. A few building engineers climb the ladders up there and find that nothing is really visibly wrong and we have an all clear. They did not however know how to check the sensor.

Enter me, the only person from our firm on site that day. So in the next few minutes I am also in a monkey suit (bc protocol), climbing a 150 foot ladder that leads to another 150 foot ladder, all 110lbs of me + a 30lb diag "laptop" slung over my shoulder by a strap. At the top, I walk about a quarter of the way out, open the casing on the sensor module and find that someone had hooked up the line feed, but not the activity connection wire so it was sending a false signal. I open the diag laptop, plug it into the unit, write a simple firmware extension to intermediate the condition, flash, reload. I verify the error has cleared and an appropriate message was sent to the diagnostic system over the radio, run through an error test cycle, radio again, close it up. Once I returned to the ground, sweating my ass off, I also send a not at all passive aggressive email letting the boss know that the next shift will need to push the update to the other 600 air-gapped, unidirectional sensors around the facility.

So apparently some genius motherfucker managed to allow Androids that are missing or have a bad/inaccurate/busted gyro to run VR apps as long as they have a magnetic sensor (compass) and an accelerometer, using both to spoof the gyro. It requires root, but goddamn is that smart... It's even potentially more accurate than a gyro in quite a few situations, since it uses the compass and can even be used to override the ACTUAL gyro, so if the gyro is busted, drifts like a motherfucker, is inaccurate, etc. it can alleviate the issue!

and google's always like "well this shit is impossible to do" then the community comes along a month later and does it

Wrote myself a flight stability controller for a drone I built - used an ultrasonic sensor for altitude so it should've maintained a constant altitude, but I had the throttle increments too high...
Hooked up the battery - off it fucked, hit the ceiling, bounced off a wall, and broke 2 props before I could grab it and yank the battery off.

Protip - if you're building a drone, tie it to a heavy fucking rock for your first flight test!

I just switched up my temperature sensors and attached a TMP36 in place of the usual DS18B20.

I did my usual pinout and turned on my Pi, then compiled Python3.6 because I needed it for asyncio.

Ten minutes later when I entered my room again, my Pi was fried and the sensor was smoking.

FFFFUUUUUUUUUUUUUUUCCCCCCCCKKKKKK

I sent my Galaxy S9+ to repairs after someone scratched my fingerprint sensor.
It came back with "repairs done" but the only thing they apparently did was a software update, the sensor still has a scratch in it, and it still goes haywire when I try using it.

Was just recalling one of the worst calls I ever got in IT...

Many years ago we had a single rack for all of our servers, network and storage (pre virtualization too!).

We had a new security system installed in the building and the facilities manager let the guy into the server room to run all the sensor cables in because that is where they wanted their panel... the guy was too lazy to get up on the roof and in the attic repeatedly so after he checked it out he went around every where and drilled a hole straight up where he wanted the sensor wire to go... well the server room was not under an attic space... when he found he had drilled through to the out side... HE FILLED IT WITH EXPANDING FOAM.... the membrane on the roof was damaged... that night it rained... I got a call at 4 am that systems were acting funky and I went in... when I opened the door it was literally raining through the corners of the drop ceiling onto the rack... An excellent DR plan saved our asses but the situation cost the vendor's insurance company $30k in dead equipment and another $10k in emergency labor. Good thing for him we had so little equipment in that room back in.

Moral of the story... always have a good DR plan... you never know when it will rain in the server room.... :)

- Get's out of bus with some elderly people.
- one of them wants to cross the street, so he waits at the traffic light

That traffic light only switches, when a pedestrian touches a sensor

- I check if the sensor had been touched, it wasn't
- Secretly touches the sensor, just like a character from assasins creed kills when bypassing a person

- Light gurned greeen soon afterwards.
- Feels like a secret hero

We were participating in a competition once where our project was an accident detection sensor (it was a business competition). We took a broken mp3 player without cover and used it as the device while our laptop played sensor sounds.

We were the runner ups

- booting Linux
- starting Clonezilla
- kernel panic after some time
- WTF, this used to work
- look at sensor values
- CPU is really hot
- CPU fan doesn't work
- BIOS warning disabled because the lowest regular fan level is 0 RPM

Luckily, I still had some cheap 120mm fan which is a bit louder, but works. What's astonishing is that in normal operation, i.e. without full load, the case fans alone provided enough air stream for the CPU cooler.

Just spend 35 € in two arduino uno, a generic kit and sensor kit. Now must wait a month...
Already thinking on shit to do...

Had to integrate legacy code into the new framework.

Me: Where does the virtual sensor come from?
Colleague: It's in the docs.
Me: That step is not in the docs.
Colleague: It is, look into the file $FILE.
Me: Yeah, it's empty :D
Colleague: Nope, it's not.
Me: See, empty (pointing to laptop screen)
Colleague: Why is it empty? (keyboard typing...) Damnit, too many git remotes in my repo :D

Coolest bug I ever found was the temperature sensor connected to a raspberry pi giving me -40 as a value.

I pasted scotch tape on the small sensor under the mice of everyone (like 20 people). Then I used a black marker on the scotch tape so it wad completely opaque.

Result? Everyone panicked when they tried to use their computer because the mouse was not working.

Just me that really want's to get an RFID implant? Seems so usefull to just tap your hand against a sensor to login 😍

Who here has a phone with fingerprint sensor but doesn't use it because you think someone might use your phone while you are asleep.

The bathroom in the building where I sometimes VPN from installed motion activated lights. The sensor does not “see” inside the stalls. Unless someone else enters the room you have about five minutes to perform all acts or the lights will turn off.

Then you are left with options:
1) finish all paperwork in the dark
2) finish all paperwork with your phone’s flashlight.
3) Open the stall door and wave to enable the light.

How fucking stupid can people actually be?!
So a Swiss ISP called "Swisscom" is giving out a Picasso, like the real thing for you to keep at home for a few days or so... and they built sensors into the Frame... AND THEY HAVE A FUCKING PICTURE OF THE GPS SENSOR IN THE VIDEO! Thats not the worst... why not OPEN UP THE FRAME AND STEAL THE PICTURE?!

So today I opened one Android app to check smog levels in my area and this happened (NaN %). Someone who made this app smokSmog probably didn't find out that NaN can happen. I am really interested if it is because sensor has no data or is it a problem inside the app

Ditched the iPhone X for the Samsung Gaaxy S9+ today, tires of the notch and no fingerprint sensor plus I wanted the bigger better screen.

My family sometimes send me tick tock videos. I usually open them on brave browser. Dude, why the fuck is brave blocking "motion sensor" through camera? what kind of spying is this? tick tock is spyware and cancer fr

Last completed (so not something which is still going on) project i have learned a lot was for "digital- and microcontroller technology" classes.
I designed a tower which fits on a pc fan. In this tower there is a tabletennis ball and on top of it is a infrared sensor. With a Potentiometer you can set the height at which the ball shall float.
As microcontroller i took an arduino uno. For visualization i used SerialComInstruments.
Learned lots of microcontroller programming, pid controls and how the fuck a serial port communication really works.

During one of our visits at Konza City, Machakos county in Kenya, my team and I encountered a big problem accessing to viable water. Most times we enquired for water, we were handed a bottle of bought water. This for a day or few days would be affordable for some, but for a lifetime of a middle income person, it will be way too much expensive. Of ten people we encountered 8 complained of a proper mechanism to access to viable water. This to us was a very demanding problem, that needed to be sorted out immediately. Majority of the people were unable to conduct income generating activities such as farming because of the nature of the kind of water and its scarcity as well.
Such a scenario demands for an immediate way to solve this problem. Various ways have been put into practice to ensure sustainability of water conservation and management. However most of them have been futile on the aspect of sustainability. As part of our research we also considered to check out of the formal mechanisms put in place to ensure proper acquisition of water, and one of them we saw was tree planting, which was not sustainable at all, also some few piped water was being transported very long distances from the destinations, this however did not solve the immediate needs of the people.We found out that the area has a large body mass of salty water which was not viable for them to conduct any constructive activity. This was hint enough to help us find a way to curb this demanding challenge. Presence of salty water was the first step of our solution.

SOLUTION

We came up with an IOT based system to help curb this problem. Our system entails purification of the salty water through electrolysis, the device is places at an area where the body mass of water is located, it drills for a suitable depth and allow the salty water to flow into it. Various sets of tanks and valves are situated next to it, these tanks acts as to contain the salty water temporarily. A high power source is then connected to each tank, this enable the separation of Chlorine ions from Hydrogen Ions by electrolysis through electrolysis, salt is then separated and allowed to flow from the lower chamber of the tanks, allowing clean water to from to the preceding tanks, the preceding tanks contains various chemicals to remove any remaining impurities. The whole entire process is managed by the action of sensors. Water alkalinity, turbidity and ph are monitored and relayed onto a mobile phone, this then follows a predictive analysis of the data history stored then makes up a decision to increase flow of water in the valves or to decrease its flow. This being a hot prone area, we opted to maximize harnessing of power through solar power, this power availability is almost perfect to provide us with at least 440V constant supply to facilitate faster electrolysis of the salty water.
Being a drought prone area, it was key that the outlet water should be cold and comfortable for consumers to use, so we also coupled our output chamber with cooling tanks, these tanks are managed via our mobile application, the information relayed from it in terms of temperature and humidity are sent to it. This information is key in helping us produce water at optimum states, enabling us to fully manage supply and input of the water from the water bodies.
By the use of natural language processing, we are able to automatically control flow and feeing of the valves to and fro using Voice, one could say “The output water is too hot”, and the system would respond by increasing the speed of the fans and making the tanks provide very cold water. Additional to this system, we have prepared short video tutorials and documents enlighting people on how to conserve water and maintain the optimum state of the green economy.
IBM/OPEN SOURCE TECHNOLOGIES
For a start, we have implemented our project using esp8266 microcontrollers, sensors, transducers and low payload containers to demonstrate our project. Previously we have used Google’s firebase cloud platform to ensure realtimeness of data to-and-fro relay to the mobile. This has proven workable for most cases, whether on a small scale or large scale, however we meet challenges such as change in the fingerprint keys that renders our device not workable, we intend to overcome this problem by moving to IBM bluemix platform.
We use C++ Programming language for our microcontrollers and sensor communication, in some cases we use Python programming language to process neuro-networks for our microcontrollers.

Any feedback conserning this project please?

!rant

The Philips Hue API is some tight-ass shit! I'm not particularly interested in the light bulbs-- maybe I'll give them a try --but the API for the motion sensor is brilliant. Simple, easy JSON responses to simple GET requests against a device-specific URL. I was able to throw together a working sensorcheck script in only a couple minutes.

Hey guys, my gf and I want to do something with the Arduino we got. We are getting a CS degree, so programming is not a problem, but we have quite basic knowledge of electronics.

What could be a cool simple (but not too introductory) project we could do?

The arduino came with a bunch of sensors (ultrasonic distance sensor, humidity, ...) some input (joystick, RFID reader/writer, buttons) and some outputs (LCD display, 8x8 LED matrix, bunch of color and RGB leds).

So I started to hear a noise on my headphones which I didn't know where it was coming from. It wasn't much of a noise but a regular sequence of "beeps", seemed like 8bit sfx. So I started moving my cable around and it turns out that if I put the headphone's cable under my phone at a specific spot I can hear the noise. Seems like some kind of interference, so the first thing that I thought of is the NFC sensor. So I remembered that an app would detect my credit card (which has NFC) if it was close to the back of my phone, so I put on my headphones and put the cable between the phone and the credit card and voila, the sound changes. It only works if the headphones are be plugged in though.

Idk why but it think this is really cool. Just wanted to share :)

#Apple #FaceID
Yet another step towards the God's eye in Fast & Furious. Since it requires a 360 scan of a face, CIA just requires a photo to find anyone in the planet who's using an iPhone X [Stands for Expensive]. There's a reason why Apple ditched the fingerprint sensor.
RIP #Privacy 😶

fuck!
picamera died
hall effect sensor died
I have to show my project in less than a week.
I'm fucked.

~dev, not in front of computer stuff

Playing with the controller and power management using the torque sensor, managed to get this flatland cook-off going today on the fat tire ebike with only 50watts of assistance. Efficiency gains over stock of 28%! 30mph on a bike feels ridiculously unsafe, but the looks you get from cars are even better.

Love being able to gather all this telemetry (GPS, elevation, pulse, durations), gives me stuff to fish through and data to play with.

Just set up my own IoT device for free thanks to the guys at Losant.

I met them at codestock a couple years ago. They were running a workshop with some Adafruit boards and at the time I had never seen anything like Arduinos before. I was fascinated. So I walked up and asked about it. They said they sold the chips just to demo their IoT stuff. I said I'd buy one. I then waited like 40 minutes for them to get their card reader working. They gave up and handed it to me, gratis. That started my dive into electronics from programming.

Few years later, I needed a remote temperature sensor to make sure a certain unattended appliance never got below freezing. I suddenly remembered that kit (now buried under my heaping stash of electronics), followed the tutorials, and had the exact thing I needed up and running in like a few hours, with all the bells and whistles I could want. And for free.

The icing on the cake here? I went on their website to look at a kit to replace it. I found one with even more goodies in it, and the entire kit cost less than the cost to go to adafruit and buy just the board alone.

Thanks Losant for being awesome. If you wanna do IoT anything, look em up.

Those little assholes who code the web interfaces for the provider specific router. You also can't replace it with a fritzbox or something similar.

1. Password field only
2. Password field is no password field
3. This red internet thing doesn't tell me what's fucking wrong
4. The "diagnose" says everything is alright with my internet
5. It always complains because not every device in my network supports gigabit yet (there is an old switch). No reason to show everything in fucking red imo.
6. The things it lists I have to check can be and also should be checked by the fucking thing itself. Like wtf. They wanted a lot of money from me for this shitty thing and there is no temperature sensor to check if it's too hot.
7. It just stops working on hot days... Restart manually solves it. Let's restart manually from work when I have to access my files on my NAS from fucking 40 km away..

(see comments for more screenshots)

Just had the worst exam of my life today in system development at my university. This cock sucking bitch of a sensor claimed I was wrong in various assumptions about Extreme Programming. Such as: saying XP is an incremental process and not iterative. Claiming UP is more iterative than XP and that various analogies about what iterative means compared to incremental was wrong and even disrupting me while I was talking. Mind you I've been studying these subjects closely the last week and have been reading most of The Pragmatic Programmer to verify various things she disagreed upon. Result grade? In the middle of the fucking scale. Fuck this shit. I'm just glad the grade won't appear on my final graduation papers. And yes, I'm a perfectionist when it comes to this and programming, so if I'm in the wrong please correct me.

!rant
Lights in the bathroom at work are on a movement sensor.
I'm in the shitter browsing devRant.
The lights go out.
tl;dr I'm pants down in the dark right now someone please send help.

What a shit day, wasted 5 hours because the fucking temperature sensor of this goddamn turbine engine won't work, which in turn prevents the engine from starting up at all.
Why does shit fail whenever you need it the most? We had 45L of kerosene we had to burn, and now we'll have to move it somewhere else for the whole summer instead, and send the engine away to have it fixed (which means a whole lot of time and money wasted).

Fuck's sake, the one thing that had never let me down so far... we even made a brand new test stand just for the occasion :(

LIRR system rant 2 - there is a thing called a sensor. Can you please paste them on your trains so we know on a real-time map where the train is. If it's 8 miles away when supposedly 'on time' we don't have to freeze on the platform. It's 2016 not 2007.

So we were building this thing with a raspberry pi, a few sensors and a few motors but for some reason we could not interface a sensor with the pi (this is supposed to be trivial) so we interfaced it with an Arduino and had connected a pin on the Arduino to the Raspberry pi to alert the pi when the sensor reads something!

Not something we were proud of but we had time constraints and couldn't figure out how to make it work. Also, the thing we were building was just for a one time use so we thought it would be okay

Today I have created a server application on Python Tornado which can forward TCP Packets directly to HTTP request queue without any intermediate caching.

Our remote IOT devices (microcontrollers with sensors attached) send sensor reading over TCP Socket to our server and all the connected web applications can show the data instantly using long polling and the above mentioned technique.

We are 1 week from first system demo of a down well seismic system. All the SW to run on the sensor nodes inside the well pipe has been developed with driver mockups since the FPGA team hasn't finished their part yet. So, integration, integration testing, system test and bug fix must be done in a hurry! Does this scenario sound familiar?

I have had to work on a project with a pc104 stack running yocto. I have had this since December last year and the image has always just randomly crashed 🤔. Yesterday I found out why!!
I am able to read the sensor of the cpu temp this has never been over 60/70 degrees C (yes I am English), however after running multiple tests and finally hitting my last wits I made the Kernel output over serial as no msg was shown on crash.
The company we have got the HW from always said this board won't over heat it throttles the cpu blag bla bla... And you guessed it in the mid of nothing but mess was a message "thermal_zone0 critical temp 127 degrees shutting down"
I didn't know if I was happy or about to cry as I didn't know if after working on this project for the last 6months I was back to the drawing boards as I need new HW or my gut at the start of not trusting the Company we are using!

Needless to say I have no idea what Monday will bring, I will keep you all posted as we all do care!

Much love

Jim

The worst technology i had to deal with was probably a piece of hardware. It was a mini-pc combined with sensors and digital IOs and thus, it should have been able to do process control all by itself.

At that time, there was hardware that did that, but this one had an intel cpu, windows embedded and some powerful libraries pre-installed.

Sounds good, didn't work. The thing was so unstable and buggy and crashed on everything. The sensor part had lots of parameters and the right order was trial and error, documentation didn't match behavior, fixes promised but never delivered.

Lucky for us: it was just a demokit, no real project.

I still remember it with a smile. We got in contact to that company at a trade fair and they had most impressive booth. I also remember their companies image movie from their homepage with developers in dark labs with holographic monitors and the boss in his shiny bright office as he looked out of the window and quoted a famous german author.

Hilarious and sad. :-)

Not in prod today, but was part of a group project that we handed in and which got us an A.

The project was to write a PID controller for a robot that would drive along a track using a sensor to follow markings on the floor. During development we were drawing graphs of the PID parameters and sensor input every tick, which caused a bit of lag but no worries - we'll turn it off for the trial runs.

Imagine our pikachu shock meme when we turned off the graphs and our calibrations were suddenly *way* off since we had been oversteering all along to compensate for the lag.

There wasn't enough time to optimize it before the deadline and using sleeps didn't produce the same "type" of lag, so we just made the graph minimize itself when it opened. To this day I wonder if the professor ever saw it or if we got the A despite it.

Can you spot the difference?
So after getting the 37 sensor arduino module kit, i decided to label each of them. The 2 modules below are the last 2 in need of labeling...
One is a magnetic hall and the other is an analogue hall but I can't tell which is which. Googling just makes it worse since they are so similar the same image is often used for both modules. The only visible difference is one has a small resistor and what appears to be a tiny led.

Please help me identify them... asking for a friend.

In a real-time multiplayer competitive game where you control a vehicle, is it feasible to simulate the whole thing on server side, such that the client only sends controls and receives sensor results? I mean like the client doesn't even know its own precise rotation, just the readings of a gyroscope and an accelerometer which are both susceptible to errors, and deduces the "down" direction from those two and approximate control forces. This would both solve hacking (writing a good robot is just as challenging) and lead to fun results like an attitude indicator going crazy from a gust of wind.

I now have further proof that Android 9's fancy Battery Management is shit:
The compass on my new (flagship) smartphone uses the air pressure sensor and the air pressure at sea level to display your current elevation. The air pressure at sea level is fetched from the weather app. And of course, the weather app has its battery policies set to auto-managed.
Can you guess what happened? "Weather app could not be found" and an elevation of -17m
Because no one thought the battery manager could decide that the weather app should not be launched by other apps. Has no one thought this through? Good thing I figured out what was happening pretty quickly.

Avoided IoT(IoS - InternetOfShit) for a long time now, due to the security concerns with retail products.
Now I looked into 433 Transceiver + Arduino solutions.. to build something myself, just for the lolz.

Theory:
Smallest Arduino I found has 32 KByte of programmable memory, a tiny tiny crypto library could take around 4 KBytes...

Set a symetric crypto key for each homebrewn device / sensor / etc, send the info and commands (with time of day as salt for example) encrypted between Server <-> IoT gadget, ciphertext would have checksum appended, magic and ciphertext length prepended.

Result:
Be safe from possible drive-by attacks, still have a somewhat reliable communication?!
Ofc passionate hackers would be still able to crack it, no doubt.

Question: Am I thinking too simple? Am I describing just the standard here?

I bought medion md 19500 vacuum cleaner refurbished for about 74 usd, it can be controlled using ir remote

I disconnected vacuum top and it’s still working so my plan is to use arduino instead of attached remote to control robot

I can try to identify where ir sensor is to directly connect to it, but don’t know if my skills are enough to do it.

edit:
to compare, roomba create 3 costs 450$ and I can buy this vacuum used without remote for 38 usd

Need an advice on what android phone to buy.

I am looking for decent cpu (snapdragon preferribly), decent storage, screen size around 5.5 inch and not too big. A decent battery life. Fingerprint/faceid sensor is a must. Ram at least 4gb.

I am really interested in samsung s10 however they ship s10 devices with snapdragon only to usa and china as far as I know. So In Europe s10 is being sold with exynos cpu which I heard is laggy.

Then I was wondering wether to get a Pixel 4, however I dont like that the battery is only 2800mAh so Im not sure if that will be enough. I looked at Pixel 3a bet then I'm not sure wether 4gb ram will be enough?

Any ideas? Can you tell me about your devices that you are using?

!rant or at least not dev related

I work at a school. Sometimes we get some weird training and shit we have to attend to. This time it had to do with what to do in the event of an active shooter.

Because you know. The U.S IS full of angry white kids with guns that if fucked up enough will just take fire on people.

Well, as a military veteran. I feel pretty confident in knowing what to do when some asshole is trying to get his expert marksman badge on me. So i requested not to waste my valuable time on such bs. I was promptly denied and encouraged to attend the bs training.

The first dumbshit thing they tell you to do is to turn the lights off and hide(if you decide to not fight) for which I mentioned that it would not work.

You see. Our entire buildings have motion sensors on each room which would TURN the fucking lights on if you move........ and even though you can turn the switch on..some offices would still work through the motion sensor....exhibit A: my office.

Fuck this. Couldn't i just keep one of my guns with me?? It would just take about 2 shoots really....and I promise they would stay in.

This sucks man. I need to move to Canadia. I don't want my kids having to hear about "mandatory active shooter training"

That fucking bullshit should never be a norm.

10 bucks and a life says i have better aim than some crazy kid.

120fps and 240fps filming isn't just for slow motion playback, but recent smartphones have 120 Hz screens so those videos can finally be watched as ultra-smooth motion with audio.

If only all smartphones encoded high-framerate videos in real-time with the same framerate recorded from the image sensor instead of stupidly slowing down when encoding.

Granted, this is a thing Apple has always done right: they encoded their "slow motion" videos in real-time and let the user select the slowed-down portions during playback!

Let the user set their preferred playback speed in the video editor, don't dictate that 1× playback speed is 1/4 of real-life speed. 1× playback speed must be 1× real-life speed to clear up all confusion.

Besides, laptops with 120 Hz screens existed as early as 2011 (Samsung 700G7A)!.

So I get to work on building a client at work for industrial automation. I am building a mini hmi to show customers how our server works. The code uses opcua. The reason I am making a client is because all the opcua hmis on the market are really expensive. There is nothing less than $600. There are hmis for free out there, but none of them say they support opcua. opcua has become a major protocol in the industrial automation industry.

It took me about 2 days to gin together a client that is pretty much abstracted and will be easy to maintain. A lot of that was just learning the opcua library client code.

Now I want to create servers and clients geared toward home automation for fun and profit. I want to take sensor data from arduinos using a simple serial protocol like modbus or other protocols that are supported. Then have an opcua server that collects this data. Then finally have an opcua hmi that I develop talk to these servers. The security model is much better and would be compatible with other vendors clients/servers. I already have a game engine I want to use for the hmi portion. It has tons of widgets for displaying data, graphs, lists, text, etc. It does both 2d and 3d.

This sounds like a project that could really fun, meshes with my work learning, and provides value to people that want to automate their lives.

The other side effect is that the next time I go looking for a simple and cheap hmi that supports opcua, there will be one.

I had to take my backspace key apart today to pull some hairs out of the sensor because it was ghosting and it deleted a whole source file. I'm amazed at how easy it is to repair thinkpads with minimal equipment and limited dexterityy / vision.

The retainer clip is so sturdy it feels like idiots trying to force the two halves together at the wrong place was a primary use case.

I think the guy who did sensor bulb,, made a big bug, just imagine you are shitting and you have to wave to light it on. Izt suppose to be on till u leave.

Question for the electrically minded.

I have a laptop with a 19v input.

I have a portable UPC with 2 voltage options in the range of this, I can undervolt at 16v (the laptop battery voltage) which works with a small firmware correction to ignore a board sensor, the other option is to slightly overvolt to 19.5v which I assume the laptop could handle through its input regulation.

Can anyone confirm if a .5v variance at charger is within tolerance? It would be an overvolt of 2.5%

iPhone 6S got salt water damage. Turns out its the screen so replaced it. Original touch ID doesn't work so that's gone. Now I'm waiting for front camera, sensor, and speaker to arrive to fix that.

2days i was programming for lis3mdl sensor, i used different circuits different lines of codes but the problem was none of them...
Look at the pic, my colleges just didnt see the simple word bottom , the footprinted pins clockwise instead of counterclockwise:(( whole 2 days gone!!

New kernel 4.9.* broke my laptop boot up with "iccsense: Unknown sensor type 30, power reading disabled" ..hrmmm

!rant
Not a setup. it’s for a research project 😂
Displaying from the tv: a bunch of environmental data
At the bottom right: A raspberry pi and arduino both hooked up with (dht22 and bmp085) and (soil moisture sensor and a 16x2 lcd) respectively

Why don't anyone make a mouse with fingerprint sensor?
Just hold the mouse like you always do, the fingerprint sensor is where you press your thumb.
You don't need to type the password, for login/sudo anymore!

I wonder what the time requirements would be to use a standard lib to animate a robotic arm that chokes people so hard their eyes pop out of their heads

What would be the N per cm2 ? How do I calculate things like mechanical advantage cumulatively over finger segments or should I make it one blunt clamp ?

Is there a sensor I could attach to determine the deformation force and yielding of the flesh beneath the hand so as not to ramp the actuator up too high causing the tips to simply go straight through

And can I wear the thing and operate it via a blue tooth enabled audio capture device so I don’t have to add the scope of a mechanism to lure these bastards close and can just chase them joyously down the halls and position the hand manually around their neck

I’ll call it the mechanized bionic joy inducer

Or maybe arm. The automated rectification machine

Maybe hand

But I don’t know how to fit any word but happiness into that acronym

I’ll think on it again
I hate you all you disgusting garbage filled diseased fucking wastes of space and air ! And who fucking said you people can breathe my air anyway ? It’s my air get your own you chomo fucking fucks !

As a dev I never gave the possibility of someone using my notebook, PC or phone to snap a photo of me much thought because I just assumed that whoever made the camera module was smart enough to make it so that whenever the CCD/CMOS sensor receives power an LED wired to the same rail lights up - letting you know the camera is on... BUT! That is an assumption I made, has anyone looked how are webcams wired up? Can anyone confirm my assumption?

Something I should've ranted a while ago, it just came to my mind

We had to learn html and css (I knew a lot about it already, heck, I'm building a website for someone)
So, we had to use object tags to embed parts of the page like you'd do with php

The thing that fucking annoyed me was the stuff that's in the files we had to refer to in the tags

You had
doctype
Html
Body
The whole fucking header with its title and fucking meta tags and shit

Why the fuck would you teach it like that?!
I would've posted a picture but I was too annoyed by the code and deleted everything I had from that course

Ah yeah, they told us to use bluefish
I used notepad++ since I'm not a noon and I know my html tags and css stuff

OK I just tried to unlock my laptop with my fingerprint a thousand times and the smiley just fucking winks at me.
don't wink at me, fucking LET ME IN

It's dual booted with Linux, to try Linux, I'm actually liking it so far.
couldn't find any drivers for the fingerprint sensor yet, but we'll see

2014
I did some cool projects with node JS.
We had this project where we had several embedded sensor box components communicating via a node js server backend with some fancy visualization.
And one of the guys was a total idiot. His part was to write some embedded code for a sensor box. He also wrote some data receiver in C# which was a totally over patterned mess and nothing worked.
For some unknown reason this guy made me his arch nemesis. He also never liked the team. While the rest of the team actually was super cool.
So in the final presentation out of a sudden in his part of the presentation (He had a Mac and had his slides done in some nasty whatever incompatible format) he pulled out some slides with code metrics. The best part was where he compared the embedded C code with my js code in terms of cyclomatic complexity. I will never forget this moment. Some nice bar chart.

Good I loved that guy for this moment.
And that made my year!

I was changing the PEI sheet on my 3D Printer and in the process I manged to also destroy the temperature sensor😭.
I was trying to order a new one and internet went down too. I also have school tomorrow so I need to go to sleep.
😣I need the printer for a thing I have to deliver in 5 days.
Guess I'll have to take the sensor from another bed (hopefully without destroying this one too).
Fffffffuuuuuuuccccckkkkk

I'd tinkered with computers for a long time but the breakthrough moment for me was a robotics class in elementary school where I programmed Legos in TC Logo.

That summer, I made a washing machine with multiple cycles and a door sensor to interrupt the cycles.

Soon after, I played with the code for Gorillas in QBasic to fix a race condition when running it on my 486 at home.

TL:DR I wanna scare the shit out of intruders, do you recommend Arduino or Raspberry Pi?

So, I live in a place kinda like a college, but everyone get their own room. There's staff 24/7, and obviously, I really dislike some of them. Otheres I just like to joke with.

Sometimes, I've thought of putting together a "system" which will probably make them shit a brick.
The way I would do this, is have an Arduino or Raspberry Pi connected to a sensor, which will trigger an airhorn somehow. Yes, and airhorn. They should shit bricks, remember?

That's the beginning tho. Later, if this ever becomes something, I plan on adding some system so it wont trigger when I open the door, along with flashing red lights when intruders opens the door.

I attached a picture. The smaller rectangle is my closet. First circle is the sensor, which I assume can just tell when the door moves, if I place it correctly.
The rectangle is the Arduino or Raspberry Pi, which should control it all as you probably already know.
The second circle is the airhorn. Not sure how I'm gonna trigger that yet.

So, does any of you have some advice or recommendations on how I can make this dream become true? Or even additional components to make it more efficient?
Last and most importantly, would Arduino or Raspberry Pi be best for this, is there a specific model thats better fit?

Maybe someone can help me out here...

I'm doing a small robotics project, where I'm building a line following robot.

That in itself is fine, and it works, however, the robot also needs to navigate through a maze.

The thing is, I only have access to two sensors, 1 light sensor, and 1 color sensor, meaning that I can't detect junctions.

Does anyone have any advice or ideas on how I could approach this with my restricted sensor count?

So last year we started off with an IOT smart home project combined with SAP HANA, everything went well with the hardware side of it. Wired up everything and functioning smooth as butter. When we try to connect to the HANA cloud db to store sensor data... we find out that Arduino isn't supported. A big FML!!

I don't even know that i should say it was a good problem or a bad one, i was programming a magnetometer sensor in both spi and i2c. I was tired of not working
I touched the sensor it dropped off!!! It was not soldered well!!!! At the problem was not from the code

Wasted an hour or two on that...
After changing the library I used, was trying to test that my Java WebSocket client was reconnecting as I intended upon losing connection.
Me : Why are you making the rest of the app bug you stupid fucker? The old one was doing fine!
WS : ...
Changes code, looks on SO a bit.. Gets despaired.

Then it struck..
The "rest of the app" was connected to a sensor.. On the network.. From which I disconnected to mimic a loss of connection...
😭😢😂😂😂👌

Okay, so, I have a functional snort agent instance, and it's spewing out alerts in it's "brilliant" unified2 log format.

I'm able to dump the log contents using the "u2spewfoo" utility (wtf even is that name lol... Unified2... something foo) but... It gives me... data. With no actual hint as to *what* rule made it log this. What is it that it found?

All I see are IDs and numbers and timings and stuff... How do I get this

(Event)
sensor id: 0 event id: 5540 event second: 1621329398 event microsecond: 388969
sig id: 366 gen id: 1 revision: 7 classification: 29
priority: 3 ip source: *src-ip* ip destination: *my-ip*
src port: 8 dest port: 0 protocol: 1 impact_flag: 0 blocked: 0
mpls label: 0 vland id: 0 policy id: 0

into information like "SYN flood from src-ip to destination-ip"

how do I send my sensor reading from arduino to rpi ?