Monitor program 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.

Compile

$ make

Upload to nodemcu

$ pio run --target upload

Run watchdog

$ ./monitor

Infos to display

nvidia

nvidia-smi --query-gpu=temperature.gpu,utilization.gpu,power.draw --format=csv -l 5

Outputs:

• GPU temperature
• GPU utilization
• Power draw

lm_sensors

sensors -A -u

Outputs:

• CPU temperature

• CPU MHZ

• CPU utilization

• Fan1

• Fan2

• Fan3

liquidctl

liquidctl status

Outputs:

• Fanspeed
• Pumpspeed
• Watertemp

Libaries used

u8g2 Display libary

https://github.com/olikraus/u8g2