Q5Grafx
commented
3 years ago I have the same with a couple of mine. at first they would go to calibrate whenever i wanted them to. one day they stopped. My machine is working flawlessly but i cant do a calibrate. Im running 3 of these on 60mm steppers and my machine was kinda close before but i could never get exact dimensions. when i added these its dead on and repeatable. With mine i had issues with a few motors and ill explain what i did so maybe it will help you. I set mine to activate high so i had to set $4=1. still was getting issues with start and stops but the software thinking the motor was moving but it wasnt. pin 1 and 2 are for microstep settings, make sure they are set to match the setting on the oled screen. i set the power to the power level the motor was rated at and not doubling it like others have said because the power is halved. I also had to add a non magnetic spacer behund the magnet to raise it slightly outside of the aluminum motor housing. for these i found 5mm copper stamped discs on etsy. it took 4 to get about 2mm height increase. then put on a 5mm spacer to lift the board to get about 3mm space between the magnet and the sensor. when i turned on my machine after this last mod i couldnt get into calibrate on 2 of the three motors, but when testing actual calibration against a caliper i am with .001" which for me is good enough. in addition the stepper motors are completely silent now where they had never been anything close to silent. I ran a few test jobs last weekend and all went well, all dimensions were dead on and cuts were clean so now its time to make christmas gifts for the grandkids. I forgot to mention if i set pin 4 to on and pin 3 to off i can get into calibrate on those 2 motors. but not when closed loop mode on and calibrate pin turned off. the third motor doesnt really care what settings are and it will calibrate any time i want it to. the third motor is new though so i wonder if it will stop going to calibrate after awhile. Hope something in this rant helps.
GhostlyCrowd
jcmental
Hey I'm writing this be cause the lack of clear instructions on the BTT github site. My set up: BTT SKRv1.3 Stepper 17HS4023 S42B_V2.0 board This is what I've done so far: I installed the hardware S42B and the oled display on my x axis stepper motor. After that, I remove my TMC2208 driver from the skr 1.3 and installed the cable from the S42B and put it in place (in UART mode). On the S42B I flipped all the switches to off but switch #4 which remained on according to the pdf from BTT to enter calibration mode. On marlin, in the configuration.h, I comment out //#define X_DRIVER_TYPE TMC2208 in order to make the stepper driver to default "A4988". In configuration_adv.h I enabled "#define MINIMUM_STEPPER_PULSE 3" and also enabled "#define MAXIMUM_STEPPER_RATE 150000" changing the values from 250000 to 150000. I compiled everything on visual studio code and uploaded the sketch to the skr1.3. I turned on the printer and everything seemed working just right but when I try to calibrate the stepper using the oled display of the S42B nothing happens. I mean, the s42b turns on but no blinking lights or motor movement at all. From the lcd display of the printer I was able to make the steppers move no problem. The only problem is that the S42B won't enter calibration mode. I'm I missing some step to set up closed loop control right? Any help would be pretty much appreciated thanks