Monitor programm runs on linux host system and fetches some vitals, sends it over serial port to an nodemcu witch displays the vitals on a small screen. The small screen switches automatically between displayed pages.

Displayed infos

• GPU temperature
• GPU utilization
• GPU Power draw
• CPU temperature
• CPU MHZ
• CPU utilization
• Fan 1 Speed
• Fan 2 Speed
• Fan 3 Speed
• Fanspeed
• Pumpspeed
• Water temperature

Monitor programm on host system

Deamon programm constantly checking system vitals with

$ nvidia-smi --query-gpu=temperature.gpu,utilization.gpu,power.draw --format=csv -l 5
$ sensors -A -u
$ liquidctl status

Compile

$ make monitor

Run watchdog

$ ./monitor

Monitor programm can also runned in background with $ ./monitor &.
For developing or debugging $ ./monitor -D.
If the monitor programm can't find the device, check for /dev/ttyUSB0. It's used as an default value. Changes with $ ./monitor -p {device-path}.

nodemcu

Simple solution for showing system vitals. An nodemcu would be an overkill, but an Arduino should do the same thing. (with some code changes)

Connecting the display

• D1 => SDA
• D2 => SCK
• 3V => VCC
• G => GND

Compile

$ make pio

Upload to nodemcu

$ make upload

Libaries used:

• u8g2 Display libary - https://github.com/olikraus/u8g2