Solution for the MMU2 cannot be homing
After testing we found two problems that will cause MMU2 to not be homing:
Problem1:
The motor(Selector motor) sold by FYSETC is different from the original one. Their current and torque are different.
Solution:
You need to make the following changes to the code:
In the config.h file, change 6 to 2:
#define TMC2130_SG_THR_1 2//6
Problem2:
The wires of some F.I.N.D.A sensor sold by FYETC are incorrect. Show as the pic:
After changing according to the above figure, connect the power supply. when there is no filament, the top of the switch has a red light; when there is a filament, the red light is off.