Topics created by Kevvv

@Kevvv that's interesting. We've suspected that belts might accumulate static charge, but we've no evidence that they do; whereas we have reasonable evidence that some hot ends accumulate static charge.

@dc42

Led is always on.

@Kevvv
I hope the 5V relais can drive a 24V fan?
Here is a schematic. I hope you can read the symbols ( or know someone how can)

relais_fan.jpg

with 24v supply your max speed will be (without starting to loose torque)
revs_per_second = (2 * supply_voltage)/(steps_per_rev * pi * inductance * current)

= 48/(200 * 3.14 * 0.0159 * 6.3)= 0.76 rev per sec

your back EMF due to inductance at that sped is approx 22V

add to that rotational back EMF voltage and you quickly realize that supply voltage is not enough .