hc6 with rasberry pi 4 fan control

scottcowen

basically i want a temp controlled fan for the pi using the temp from the pi but with the ribbon cable attached how do i go about finding and using the pid from the pi and controlling a fan out put for it on the 6hc?

T3P3Tony

@scottcowen one for @chrishamm to see if it would be possible to add a sensor that was reported from the Pi to allow the 6HC fan to be set to work thermostatically from it.

In the meantime you can have it always running, the fan on my pi 5 is always running and it's not that loud

scottcowen

@T3P3Tony i can definitely do it that way and it not so much the noise its more the ability to know its warm, secondarily is there a way to display pi temp on dwc?

scottcowen

@T3P3Tony i appreciate the help first time running this configuration

chrishamm

@scottcowen You can query the object model value sbc.cpu.temperature to get the Pi's CPU temperature. It isn't directly possible to assign a thermostatic fan to that sensor reading, but you could create a daemon.g file and check it every few seconds. For example:

if sbc.cpu.temperature > 50
  M106 P3 S1
else
  M106 P3 S0