That’s fantastic. I’ve had a batch of 4 wire fans sitting next to the printer waiting for this. It’s going to be so satisfying having RPM displayed for each fan. Thank you very much for your work on this (and everything else you do) While it seems like it should be trivial to figure out the implementation as I assume it’s simply a matter of assigning an unused expansion header pin. However, I figured it wouldn’t hurt to ask if there is any documentation on how to setup the multiple tachometer lines. If not is there anything I can do to contribute when I set mine up by taking pictures, documenting the process, etc?
That would be awesome if it was added to the 2 as well. There is plenty of spare I/O to use so I wouldn’t think it would be too difficult. The hardest part for me if finding the time to code it. If you end up needing someone to beta test it I do have multiple 4 wire fans on mine to easily do some testing.
There doesn’t seem to be any mentions anywhere of being able to connect the RPM sense of multiple fans since the only mention I see is the connection to PB6. Is it possible to have multiple 4-wire fans with their own RPM sense. I would love to have RPM readout for my extruder cooler and my two parts coolers. It seems like it should be possible but I’m hitting a wall trying to find documentation on how.
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