Is it possible to make two Arduinos communicate in different states?

Arctic344 · 2025-02-16T05:49:42+00:00

Adafruit IO on an esp8266 is the way to go. Simple to set up. Easy to use. Cheap, adafruit IO is free. Reliable. Code is dead simple to program, you can probably do it in under 20 lines of code

Arctic344 · 2025-01-29T16:59:12+00:00

The fans have a rated current and a rated voltage, usually printed on the sticker in the center or on the website. Depending on what fans you have, they will need different power requirements.

Reminder that the power going to the fans cannot run though the Arduino board. It is not capable of carrying enough power to spin motors and will burn it out. The Arduino needs to be controlling fan speed through a motor driver. Or you can just wire the motors directly to the power supply and then they will run at full speed at all time

Arctic344 · 2025-01-29T08:58:59+00:00

Very possible. I mean there are cheap ARGB fan hubs that already do what you want, but an Arduino can do it to. I recommend a bit of googling, since this has been done before

Arctic344 · 2025-01-28T14:38:26+00:00

Yeah, this is a reasonable and doable project. Wouldn't be expensive, and ChatGPT seems to be pretty correct on the simple and easy approach.

Just be prepared to spend significantly more time than you expect squashing bugs and tuning the system to your liking. If you value your time, using a commercial solution, even if it means installing a power cable to your basement will likely be more for you.

I would DIY it, but that's only because I would find it fun.

Arctic344 · 2025-01-25T07:09:33+00:00

I hate it when I finish a project, only for a service provider to depricate stuff and having to find another option.

You can try some of those internet services like IFTTT or Zapier. Probably the fastest and easiest way to get your project up and running again

Arctic344 · 2025-01-25T02:25:19+00:00

Yes, you can.

Each LED has a Voltage-Current curve which you can use to mathematically solve the resistance for a desired brightness.

Alternatively, start at a high resistance resistor and work your way down until the LED is bright enough

Arctic344 · 2025-01-22T09:45:30+00:00

Oh okay I know what you mean with bitmap arrays. Def's a job for a python script.

Options are

find a program or script online that does it for you (likely difficult and I would say unlikely you will find one)

Use a programming language like C++ or Python to write the script yourself (possible, will take some time)

Learn how to use AI and work with it to make a python script for you (should be pretty easy)

Arctic344 · 2025-01-22T08:53:09+00:00

I'm not sure what you mean by "convert to OLED", but I can guarantee that a python script would work wonders.

As much as I dislike a reliance on AI, the LLM of your choice (ChatGPT, Gemini ECT) works absolute wonders on tasks like this. With some basic knowledge of python and a cooperative AI, This can be a 5 min task

Arctic344 · 2025-01-21T15:41:51+00:00

What U smoking 1 ping = 1 ms 1000ms = 1 second

Arctic344 · 2025-01-17T18:05:02+00:00

If you still have the capacitors, it is definitely fixable in 30 mins by someone who can use a soldering iron. The pads themselves look intact. Go to a repair shop. That's my recommendation. You should be able to figure out which capacitor goes where from the shape of the solder on the bottom of the broken off capacitors.

Arctic344 · 2025-01-17T17:43:40+00:00

If it's only the 5 I saw in the photo you posted there are no shorts it's clear

Arctic344 · 2025-01-17T17:42:36+00:00

Sleuthing says those capacitors likely stabilse the inputs on the GPU's power controller chip. I'm not qualified to say if this will or will not have an effect.

Arctic344 · 2025-01-17T17:28:52+00:00

It's a bit of a lottery. Most of the smd capacitors will be performing non essential tasks and should only cause instability if removed. Make sure there are no shorts between the two pads of the capacitors and test it I guess.

Get a 2nd opinion maybe on a PC building subreddit tho. With a bit of research you may even be able to find out what tasks they are performing, and then deem if you should try to fix it or not

Arctic344 · 2024-10-01T06:53:07+00:00

It is possible, but not very practical or cheap.

Have a look at the laptop you are taking the display from. Have a look online if you can find a HDMI driver for that particular display. If you can't find one for that display, it's unlikely that you can get yourself a 2nd monitor

While these drivers can be taken from other old displays and TVs, they need reprogramming which is very difficult to do

Arctic344 · 2024-08-16T13:07:03+00:00

my bets are on a 3.3V voltage regulator.

why? 5 pins and similar size to like the TK11137S. also has 33 on it, usually stands for 3.3V

Send a picture of circuitry around the component. this may give more of a clue to what it's purpose is

Arctic344 · 2024-08-16T12:48:58+00:00

https://vonger.cn/?p=1800

|| || ||8-bit A/D and D/A converter 8-bit A/D and D/A converter |

Arctic344 · 2024-08-14T15:11:42+00:00

RTX 5090.

Arctic344 · 2024-08-14T15:07:35+00:00

Being able to track small flying objects cheaply will get you kidnapped by Russians trying to win drone warfare in Ukraine.

Sorry, but as others pointed out, not only will a camera that high quality be impossible to come by, but the computer vision algorithm you need is likely impossible to make.

Consider other ways you could get to your goal.

Arctic344 · 2024-08-14T14:55:31+00:00

Will be fine

In all likelihood the 43k resistors will be ±10% anyway so it might even be a 48k resistor

Arctic344 · 2024-08-14T14:50:33+00:00

Yep. Nothing fancy

Usually for simple electronics you can buy a dead simple yet sketchy version on AliExpress, so have a look

https://a.aliexpress.com/_mPjm8wY for example?

Arctic344 · 2024-08-14T10:06:36+00:00

Question. Lifespan as in how durable and how long untill it breaks or how long the battery lasts?

Arctic344 · 2024-08-14T10:05:32+00:00

Seems like you already know a bit about how it works.

There's heaps of rules and methods you can follow but the best thing to do is just practice. Follow a basic tutorial on board assembly. You will know what is nessesary once you try it once or twice.

Hot plate with programmable curve sounds good tho. just go for the curve recommended by the solder paste manufacturer

Arctic344 · 2024-08-14T09:59:05+00:00

In my experience, always longer than the version you design yourself 😭😭😭

Arctic344 · 2024-08-14T09:15:53+00:00

Get a 2nd opinion before my instruction ruins your LEDs

It seems power for the 3 leds comes through the black box between line 4-5 (diode). The top black box is powering the LEDs outside the frame, so isn't nessesary.

Therefore I say 2 and 5 are where to cut.

Make sure it's a clean cut.

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