RE: HOMING ISSUES
No new cable here... but I suspect they're twisting (electrical filtration) the heater wires.
https://github.com/prusa3d/Prusa-Firmware-Buddy/issues/4596
(See the couple of pictures at the end.) Possibly with some wiring re-routing.
Let us k now what you find 🙂
I contacted Prusa when we received the printer at work because of this issue. They never accepted that it was probably the cable so they never send me anything. I don't know if you found the thread about the custom g-code that turns off the heater while calibrating. This fixed the issue for me.
RE: HOMING ISSUES
I contacted Prusa when we received the printer at work because of this issue. They never accepted that it was probably the cable so they never send me anything. I don't know if you found the thread about the custom g-code that turns off the heater while calibrating. This fixed the issue for me.
What are your load cell values before and during homing with the custom g-code? Write it down. Then factory reset the printer and test again paying attention to the load cell values. If they are fluctuating during the homing process but are steady with the custom g-code, you need to reach out to Prusa support again.
RE: HOMING ISSUES
So I thought the G28 I was the command to disable heating while homing. That wasn't the case. Looks like adding M104 S0 before G28 does the trick.
What I'm seeing are some variations between -100 to +100 if the heater is on while homing. With the heater off it was more like -10 to +10. Not sure if that is a more scientific method to diagnose. But I can confirm that M104 S0 solves my issue as well. New cable is being shipped and will be here in a few days.