I've just installed an Hemera direct drive on my Ender 3 and the extruder is not rotating. I'm trying to control it from the Ender 3 menu - Prepare->Move Axis->Extruder->Move 10mm->setting 10mm and pressing the knob. Visual inspection of the gears shows that they are not rotating. I've double checked that the Hemera extruder stepper motor cable is plugged in correctly on the board. Any ideas of what I can do to determine if I have a DOA Hemera?
Have you heated up the hotend to above the min value in your firmware? It will not extrude unless the hotend is heated to this
Thanks Eviltoy, I did have the hotend heated to 205. It turns out the extruder stepper motor is turning, just incredibly slowly. I had updated with firmware with the Hemera eSteps per mm to 409 but as I'd already tuned the extrusion of the Ender 3 with the stock extruder the old setting from the EEPROM were bring used. I went ahead a cleared the EEPROM and rebooted the Ender 3, now the stepper motor moved even slower. Any ideas what what I've done wrong? Thanks
So I take it you have defined the steps per mm on the screen post clearing the eeprom etc? You need to save the configuration post updating the steps. Once you have done this power cycle the printer for good measure. Heat the hotend and try to extrude the plastic. It will extrude slow I believe its a firmware setting that states something like 100mm in 100s or something like that. You should be good to go after this. Also are you running the standard board in the ender?
Thanks for your help Eviltoy. First to answer your questions. I did make sure that the esteps were set correctly post reset and flash. And yes I'm using a stock 1.1.4 Creality board. I have now confirmed that the Hemera is working correctly by running the following gcode: M83 G1 F50 G1 E100 The issue is with the default extrude feed rate when using the menu on the printer, not a huge deal, but I'll take a look at the firmware to see if how it can be change it.
Awesome! glad to hear you are sorted. Next thing is to upgrade that mainboard! I personally like the skr E3 mini for the ender. It ticks all the boxes and doesnt break the bank
I'll take a look, thanks. One last question what are yo doing to load and unload filament? I ended up writing a couple of gcode scripts, works fine but there's got to be a better solution.
I usually dont change filaments much as I post process my prints. But when I do I generally heat the nozzle and pull it out. Note I am running direct drive
