AS5047 Error on Mechaduino

[misfittech]

AS5047 Error on Mechaduino

[hg42]

that seems to be caused by compiling as Arduino M0 (or also M0 Pro, both variant mzero, because the boot loader is 16k and the device calls itself Arduino M0, or in other words, the clone has a bootloader for Arduino_M0* and you cannot compile and upload as Arduino Zero this way, at least not on Arduino IDE).

Arduino pin numbers are different between zero and mzero in several ways:

• SPI, CS... hva edifferent numbers
• D2, D4 are swapped, which is very bad for the AS4954 and motor (both very hot), because VREF is always zero on one pin

[hg42]

I managed to create a board definition to compile as Arduino Zero, but with a 16k bootloader and upload like the Arduino M0 (Pro) with avrdude.
This works so far. If anyone needs this, please send an email...

[beniroquai]

HEy @hg42 I guess I have the same issue. It's very long time ago, but did you have a solution available by the time?

[hg42]

it's a long time ago and I forgot all the details...

I fixed this by changing some configuration lines in board.h, but I am not sure, how the result was working at the end.
At that time I experimented with several software solutions.

see my fork hg42/nano_stepper
branch mechaduino_clone (seems I forgot to push it at that time, so I pushed it now)
commit 0155c29 contains the changed board.h

My final conclusion was, that the frequency is too low for my purposes.
Note, my first requirement was to have a quiet motor (like with TMC chips where I came from), and only the second goal was protection against skipping. If your priorities are different, you might come to a different conclusion.

[beniroquai]

Perfect! Thanks a lot! I'll give it a try now.

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