Author: AETEK

The changes shown here require knowledge in the field of Arduino, Marlin and electrical engineering and can overwhelm normal users. Also, I would like to point out possible dangers that exist in certain interventions. All adjustments have been checked for function.

Difficulty: Advanced

What is this about?

Just as the A5 is delivered from the factory, only the component cooler is PWM controlled. The Cold End Fan is directly connected to 24V and constantly makes annoying sounds.

Now I will show how to automatic control the cold end fan via PWM and thus gets quieter. Then the filter helps to prevent PWM noise for the Cold End fan.

Required Electrical Parts (for one fan) * 1 x Diode 1N 4007 * 1 x Resistor 100 Ohms 3 Watts * 1 x Electrolytic Capacitor 220uF 35V * Optional 2-Pin plug and socket for building a plug-in-adapter. * Some cable and heat shrink The hobbyist will most likely have the parts in the tinker box. ==== Build The Circuit ===== Please note the polarity
==== Connection On MKS GEN_L Mainboard ===== The PWM-Filter is connected between the MKS GEN_L mainboard and the fan.
aetek The speed and volume of the component cooler (lower A5 FAN) can be regulated via GCODES. —-
Status 6. July 2018: Working…