Hi. I've seen a few mentions on here of setting the stepper driver current.
Could someone please point me in the right direction to find out how to do this?
There is explanations of setting the voltage with a multimeter but I cant see anything about setting the amps, or how to convert from one to the other.
Thanks for the info. Do you just copy and paste this whole list into the Cura start G-code window?
I also went here. If you scroll down in the post it shows recommended configuration settings and the gcode needed to apply them:
This section in particular: 2.2 Marlin Firmware configuration
Send the following commands via USB: M350 E16 ;micro stepping set to 16 M92 E690 ;steps/mm - you may need to finetune it M201 E600 or E800 ;acceleration mm/s^2 M203 E30, E60 or E120 ;max speed mm/s M205 E10 ;E jerk mm/s M906 T0 E350 or E850 ; TMC motor RMS current mA M907 E350 or E850 ; motor RMS current mA M900 T0 K0.22 L0.4 ; linear advance values TBD M900 T0 S0 M207 S1.5 F3600 or F7200 Z0.2 ;firmware retraction M500 ;save settings to EEPROM
You'll find that some of those gcode functions aren't implemented, but the important stuff is there. For the printer I got at least (maybe true for all of us?), the model matches this list:
1.2 Stepper LDO-36STH20-1004AHG(new)
Motor current: 1.2A Peak or 0.85A RMS Acceleration: 800 mm/s^2 Retraction speed / max speed: 120mm/s Operating temperature: 60-70°C
Thanks for your help. Will try.
Thanks. I'm not at all knowledgeable about marlin. Can I get into marlin and keep the same touchscreen etc? I'm close to giving up on this printer. Now it extrudes for a couple of minutes then jams.
This printer definitely needs more knowledge than I have I was stupidly expecting it to work without all this tinkering.