Hi, I'm rather frustrated now and running out of options. My Hermes/Hemera (Direct Drive 12 V version) stalls when I try to extrude/retract. This behaviour happened straight from unpacking and installing. I've disassembled and reassembled the unit twice now. No cracked gears. Gears can be turned with a tweezer freely: Stalling when trying to extrude (same behaviour via TFT, OctoPrint, Pronterface) My Setup: - SKR 1.3 with Marlin 2.0.x bugfix - BTT TMC2209 1.2 UART, StallGuard enabled (doesn't affect E0) - E0 is set to stealthChop (switching to spreadCycle didn't help) - All steppers are set to 0.800 V - raising the extruder to 1.000 V didn't do anything - Hermes/Hemera was set up according to the documentation (409 e-steps) Everything is properly connected; checked a dozens of times. Went through troubleshooting aswell. Tried with 2 different steppers - they work fine. I've tried while pushing idler away - same behaviour. Maybe I missed something so I try to kindly ask for help/advice. Thanks for any suggestions! PS: Batch 2256-7
The coil pairs on my Hemera were on JST PH pins 1-4 and 3-6, not on 1-3 and 4-6. I checked this with a multimeter in continuity mode. Therefore, I configured the wiring on my Hemera as follows: 1-blue, 3-green, 4-red and 6-black (front-to-back). Are you sure you wired the Hemera correctly?
Thanks for your quick response. That's the fault - I never thought about using the supplied stepper cable as it is just too short. So I went for a regular cable where the pairing is different. Well, it's standard - Hemera isn't. Anyways - thanks for the reminder! Appreciated!
Great! I suspected that from the wiring in your video. I'm glad you didn't fry one of the channels from the stepper driver! Ask me how I know
I have the exact same issue. However, I was aware of the pin swap and I am using a cable that has the pins flipped to compensate on an Ender 5 Pro with stock V1.1.5 mainboard. My gears turn but I get the same horrible grinding sound. From what I can tell in the data sheet this is a simple swap of pins 3&4 at the motor.
Different motor manufacturers and different printer board manufacturers use different cable orientations, it's not the case that the Hemera motor isn't standard, it's more of a case that there isn't a standard.
Hi, I have an Ender5 with a Creality Silent V1.1.5 connected to the Hemera direct drive 24V. I am using the cable provided with the Hemera kit. Now, when i start an extrusion request, the extruder does nothing. No move, the gear does not move. I don't know what I am doing wrong (wiring...). I am joining a scheme of the Hemar wiring. I this wiring ok ? Thanks.
Yes, this seems correct for this board. If you want to test the stepper without any filament loaded, you can disable cold extrusion with: Code: M302 P1
Hi, Thanks for your help. I have found the problem, wrong contact. Now it is working well. I am working to found the good parameters (extrusion...) It is an amazing product. Regards.
