2:37 AM
4 hours later…
6:48 AM
Other tm2130 hobbyists seem not quite understand the relationship between step rate and motor speed, so I am thinking of using a square wave signal generator to explain how we can dreive the motor speed from step rate.
For the standalone mode testing I am doing now, I will be using a sig gen to send the step signals to the tmc2130 driver. In other words, no Pico software now. It is the next step I will be using Pico generated stop pulses to replace the external, manually adjusted frequency sig gen.
7:07 AM
7:24 AM
3 hours later…
10:11 AM
I used a multimeter to verify that the SPI jumper is actually sort of "SPI Enalbe/Disable" jumper. If this jumper shorted by the SMD 002 resistor, or just a solder blob, then the TMC23010's SPI pin is shorted to ground, thus disabling the SPI function.
@john So if your board's SPI jumper is open, it means SPI signal is disabled. To set SPI mode, you need to remove the resistor/solder blob.
Now my board's SPI jumper is shorted, so I can now ready do standalone mode of configuration, using the config pins CFG/MF pins, but still need to use the Step/Dir pins to move and set direction of the motor. Later if I wish to do SPI configuation, I would remove the 0 Ohm resistor (SMD marked 0 or 002) or the solder blob.
3 hours later…
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Discussion between john and tlfong01
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