2:21 AM
3 hours later…
5:15 AM
Now that I know how to talk to tmc2130 in standalone mode, next step is to talk in SPI. I am starting by searching EEQE for any old post useful. I found 17 posts but they are not very useful either because they are too short for newbies, or they are not for Rpi and python.
***TMC2130 Pinouts and Powering - Watterott*** (TMC2100 2130 2208 2209 5160 SilentStepStick)
https://learn.watterott.com/silentstepstick/pinconfig/#powering
https://learn.watterott.com/silentstepstick/pinconfig/#powering
2 hours later…
7:08 AM
I found that I have fried 2 tmc2130 module, perhaps because (1) I did not power up Logic poser and Motor power in the correct sequence, (2) my bad soldering job when messing with the SPI jump opening/shorting, (3) carelessly wrongly connected the wrong wires (12V to 3V cct, wrongly reversing voltage polarity, etc).
6 hours later…
1:27 PM
1. I will first use Pico MicroPython GP pins to do pin configuration, using MicroStep Resolution full step and 1/16 step for comparison with SFT mode setting.
4. I will use Datashet Section 23.1 to try to initialize the driver, and hopefully using MicroPython code to send Step/Dir pulses to move the motor.
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Jan21
Jan '2222
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Discussion between john and tlfong01
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