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makerbase-mks / MKS-SERVO42B

MKS SERVO42B is 3d printer closed loop stepper motor NEMA17 MKS SERVO42 developed by Makerbase that prevents losing steps. CPU is STM32F103C8T6 ARM 32-bit Cortex™-M3 CPU Core,72 MHz. Magnetic encoder is Allegro's A1333LLETR-T Contactless 0° to 360° angle sensor IC ,12bit .This Project open source hardware and code,support platformio build and upload firmware...
https://www.aliexpress.com/item/33032696338.html?spm=a2g0o.store_home.productList_8356958.pic_1
GNU General Public License v3.0
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Moves on power up #25

Closed farayman3 closed 3 years ago

farayman3 commented 3 years ago

When I power up the boards the motors rotate to go to a (random) fixed position. They seem to go to a random degree value. Why is this happening? This bends my gantry in my CNC upon power up.

(I am not using the enable pin and have it turned off in the software, does this create the issue? Also did not update firmware yet, currently has version 2.0)

farayman3 commented 3 years ago

I found that this was indeed solved in a software update. Going to update the firmware and expect it to be solved.