Would be nice to set FAN target speed by RPM instead of PWM

[Veti]

@BoA
i think the hardware overview makes it pretty clear

https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Hardware_Overview

6 PWM controllable fan channels. 3 of these support 4 wire fans including tacho reading. These can be run from either the input voltage, from 12V, or from external power for added flexibility. Also one always-on fan connector supplied with VIN voltage.

[BoA]

@Veti Ok. I will give it a try soon

[A Former User]

@BoA said in Would be nice to set FAN target speed by RPM instead of PWM:

My concern was voltage on tacho pin and pwm pin.

they're generally active low to avoid voltage issues