TMC2130 – setback

Well, my enthusiasm for the TMC2130 driver was premature. Faith was not kind and I discovered several design flaws after I ordered a bunch of assembled boards.

First I somehow completely missed the 5V power pin to the driver. So initially it was as dead as a door nail. I also discovered one of the config pins was not properly grounded – but that was not a big deal.

After a few bodge wires the driver sill would not respond to SPI commands. This was a rather frustrating thing and I remember having similar experience with the first PrntrBoard with 2130 drivers. Back then I had to wire a separate clock signal to each driver to get them to work.

When reading the datasheet of the 2130 chip it describes that if one connects the clock pin to the ground the chip would use an internal clock generator, but something is amiss and it does not seem to be working correctly in my version.

So back to the drawing board. I updated the PrntrBoard V2 to have a driver clock signal and now have to order new sets of PCBs.

Quite annoying. If you have a clue why the build-in clock is not working on these I would appreciate the hint.

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