Fly BDsensor and Unable to read tmc uart 'stepper_z1' register DRV_STATUS

General Discussion
1

Basic Information: Ever since I installed my BDsensor, I get this message every 3 or 4 prints:Unable to read tmc uart ‘stepper_z1’ register DRV_STATUS

Printer Model: Hevort
MCU / Printerboard: BTT Manta mp8 1.0v
Host / SBC BTT CB1 1.0v
klippy.log
klippy (2).log (2.3 MB)

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Ever since I installed a BDsensor from fly, I’ve been having this issue. When I try to home the bed, while doing the Z homing, the error comes out and its usually the “Unable to read tmc uart ‘stepper_z1’ register DRV_STATUS” and also the “Unable to read tmc uart ‘stepper_z2’ register GSTAT”. I have stepper_z1, stepper_z2 and stepper_z3, and those take turns apearing in these message with the Y axis also appearing fewer times.
First I thought it was the wiring and I changed all the wiring. But than I have never had this problem when i had a BLtouch.
To continue working, I have to shutdown, take the printer off the plug and back in. With luck I can do several prints without problem, but than, I have to restart the printer 2 or 3 times in a row.
I used this site to install the sensor: Install **BDsensor** | FLY Docs
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2

After reading this post I think I got the solution to my problem. Apparently I was getting some kind of frequence noise when using 1/32 microsteps for my z axis. I simply changed to 1/16 and no errors reported so far.
I will do some more testing and mark as a solution if I have no more errors.

3

Nope! Changing the microsteps was not a solution. I guess I will keep on with failing machine every 10 - 20 homings

4

Try using a different pin for PB2, such as PE8, which is nearby.

5

I thought this was a solution. I had several prints before the error happen again.
Well, maybe there is more than one sorce of error
Thank you for the effort thou

6

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