57 lines
3 KiB
Markdown
57 lines
3 KiB
Markdown
# Universal K80 Cooling
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This is a Linux cooling control software, which uses an Arduino Uno, PWM fan, and Python 3. It was designed for use with a Tesla K80 (a datacenter GPU without fans), but should work with any NVIDIA GPU.
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This will determine the speed your fan (connected to your Arduino) should run at based on the highest temperature
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between your GPUs, then will send that speed to your Arduino.
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Make sure to set the port in the .py file you use!
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### How to use
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1. Install dependencies using `pip install -r requirements.txt`
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2. Connect the Arduino to the fan according to this diagram:
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3. **Set the port variable**
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1. Instructions for finding the port are in the Python code.
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4. Create a script to run this every 10 seconds
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1. Use a text editor to create a script called `every5secs.sh, and add the code below.
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2. Make a note of where you saved the script, and remember to change `/path/to/tx_cron.py`
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```bash
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# This runs the tx_cron.py every 10 seconds
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i=0
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while [ $i -lt 6 ]; do # 6 ten-second intervals in 1 minute
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python3 /path/to/tx_cron.py & #run your command
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sleep 10
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i=$(( i + 1 ))
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done
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```
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4. Create a cron job
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1. Run `crontab -e`
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2. Add this line to the bottom of the file: `* * * * * python3 /path/to/every5secs.sh`
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1. Remember to change the path to your script!
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3. Save and exit with `Escape`, `:wq`, `Enter`
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### My setup
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- I use [this](https://www.thingiverse.com/thing:4960323) 3D-printed fan adapter for my Tesla K80; I highly recommend it.
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- I also remixed it into a 92mm version [here](https://www.thingiverse.com/thing:5408988)!
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- Also, I use [this](https://www.amazon.com/Wathai-Airflow-Speed-Pressure-Cooling/dp/B07Z4JZPKN) fan. It's pretty powerful, and pretty loud!
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- Note: I couldn't get PWM to work properly with this fan. Maybe get a Delta one if you want that.
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### Notes and Limitations:
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- This currently **only supports NVIDIA GPUs**
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- This currently **only supports normal PWM**, not delta PWM
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- You *may* need to change some variables in the Arduino code depending on your fan's specifications.
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- Try looking up a datasheet
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- This was designed for an Arduino Uno, and should work on one. I don't know about running it on anything else, though.
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- `tx_speed.py` works fine, but it's just an infinite loop. I'm working on marking a version that uses a cron job, but it's not done yet.
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### Resources I used
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- Python-Arduino communications library - [pySerialTransfer](https://github.com/PowerBroker2/pySerialTransfer)
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- Thanks for the help figuring this out, [PowerBroker2](https://github.com/PowerBroker2)!
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- Arduino PWM fan control - [25 kHz 4 Pin PWM Fan Control with Arduino Uno](https://create.arduino.cc/projecthub/tylerpeppy/25-khz-4-pin-pwm-fan-control-with-arduino-uno-3005a1)
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- This is the basis of my arduino-fan diagram
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- See NVIDIA GPU temperatures - [GPUtil](https://pypi.org/project/GPUtil/)
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### TODO
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- Add diagram for wiring LED lights
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