3/5/2023 0 Comments And yet it moves v1.50![]() ![]() I did set microsteps to 16 to avoid issues when the mode switches silently, so this is not what happen there. But if I move E0 by 100 mm filament moves just 50 mm. If I go scale down the flow to 50% I kinda stop losing steps and get a valid print result. But I triple checked the extrusion amount. What I really wonder about: Even with downscaled extrusion and many lost steps I still get a complete print. Setting K value in the slicers start code.It just feels like it not working on the set current limitation (nothing is warm, but I think it should with 940 mA). I have no idea why my extruder is missing steps. It is still possibly that I have some problems in my configuration. The calibration print of linear advanced completed without issues.īut the Extruder is loosing steps and has not much power on normal prints. I did the Hardware hack (PA3 RX+TX TMC2208). I have the Ender 5 Pro with creality v4.2.2 Mainboard. Maybe it causes other issues, but can not say much about this. I have stlink, but i don't have time to debug :(Įnder 5 Pro, STM32F103RET6 board V4.2.2, Marlin 2.0.9.2 DHAVE_SW_SERIAL appended, UART pins assigned. If i change driver type from TMC2209_STANDALONE to TMC2209 for extruder, device stuck with blank screen, no logo, only backlight and working fans. I tried this mod today, but something wrong with code. There's actually a nice guide on how to enable UART on E stepper for Ender board v4.2.2 I've found on Reddit here. ![]() So removing R48 and pulling pin 19 high should also work for disabling StealthChop. It is pulled low on the v4.2.7 board via R48. I had to adjust the current from 650mA to 850mA (from the Ender 3 Pro LCD menu) as occasionally (without linear advance) I got some missing steps, still this might be due to my current setup.Īnother point to mention - TMC2225 has a pin 19 (SPREAD) that toggles the chopper mode selection. Another alternative to lifting pin 18 is to cut the PCB trace that connects pin 17 to pin 18. DIAG is an output, why pull it up? So I lifted pin 18 whose signal is not used anyway and then I got the stepper communicating properly and I'm happy using linear advance now. It turns out pin 17 (UART) and pin 18 (DIAG) are shorted together (via a trace) and pulled high via R52. I removed the heatsink from the driver and that is when I remembered I read somewhere it was a TMC2225. However, while the driver was accepting the settings, I got the TMC COMMUNICATION ERROR. Yes, R19 is another pulling resistor as opposed to the v4.2.2 board. I was successful in making the driver switch away from StealthChop - soldered a wire from PA3 (software RX and TX UART) to the closer to the driver end of R52. I must have omitted the fact that the v4.2.7 uses TMC2225. So I decided to follow and try to apply it to my Creality v4.2.7 board, the hardware path. At some time I got the E stepper stopping. Sharing some info for anyone that might be using the Creality v4.2.7 board.Īfter submitting #21463 I did further testing. ![]()
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