[support] pandaPI V2.5 - Sensorless homing

[adepier]

I cant make sensorless homing working with Pandapi v2.5, RaspberryPi4, TMC2209... could you share your working configuration.h and Configuration_adv.h file to compare? or update the doc, giving a troubleshooting procedure? thanks here are my files... Configuration.zip

[markniu]

you can try to change value of the sensitivity X_STALL_SENSITIVITY Y_STALL_SENSITIVITY, different motors may have different current and sensitivity.and do not forgot to unplug the endstops.

[adepier]

That's a good idea, bit still doesn't work... when I send M122, I see that TMC is disable and stealthChop is disable any other idea? thanks

Send: M122
Recv:       X   Y   Z   E
Recv: Address       0   1   2   3
Recv: Enabled       false   false   false   false
Recv: Set current   800 600 400 800
Recv: RMS current   1436    1049    718 1436
Recv: MAX current   2025    1479    1012    2025
Recv: Run current   25/31   18/31   12/31   25/31
Recv: Hold current  12/31   9/31    6/31    12/31
Recv: CS actual 0/31    0/31    0/31    0/31
Recv: PWM scale
Recv: vsense        0=.325  0=.325  0=.325  0=.325
Recv: stealthChop   false   false   false   false
Recv: msteps        256 256 256 256
Recv: tstep     0   0   0   0
Recv: PWM thresh.   1581    1581    2635    2668
Recv: [mm/s]        100 100 3   30
Recv: OT prewarn    false   false   false   false
Recv: pwm scale sum 0   0   0   0
Recv: pwm scale auto    0   0   0   0
Recv: pwm offset auto   0   0   0   0
Recv: pwm grad auto 0   0   0   0
Recv: off time  0   0   0   0
Recv: blank time    16  16  16  16
Recv: hysteresis
Recv:  -end     -3  -3  -3  -3
Recv:  -start       1   1   1   1
Recv: Stallguard thrs   0   0   0   0
Recv: uStep count   0   0   0   0
Recv: DRVSTATUS X   Y   Z   E
Recv: sg_result 0   0   0   0
Recv: stst      *   *   *   *
Recv: olb
Recv: ola
Recv: s2gb
Recv: s2ga
Recv: otpw
Recv: ot
Recv: 157C
Recv: 150C
Recv: 143C
Recv: 120C
Recv: s2vsa
Recv: s2vsb
Recv: Driver registers:
Recv:       X   0x00:00:00:00    Bad response!
Recv:       Y   0x00:00:00:00    Bad response!
Recv:       Z   0x00:00:00:00    Bad response!
Recv:       E   0x00:00:00:00    Bad response!
Recv: 
Recv: 
Recv: Testing X connection... Error: All LOW
Recv: Testing Y connection... Error: All LOW
Recv: Testing Z connection... Error: All LOW
Recv: Testing E connection... Error: All LOW
Recv: ok
Recv: 

[markniu]

The reason of this TMC Error message is that with write only access to TMC, and there is no RXD connection in the hardware. So that's normal.https://github.com/markniu/PandaPi/wiki/How-to-run-TMC2209-with-UART-mode-(V2.0-2.5) but still no idea why it does not work in your side!