Thanks for pointing this out. 2 and 3 is correct. I have corrected the text.
Please ask for help in a new thread on the forum, and include your config.g and homing files in that post.
RRF3 now supports multiple fan tachos on Duet 2.
The tuning algorithm was changed completely.
I have updated the text.
Please ask for help on the forum at https://forum.duet3d.com/ .
Duet 3 will allow the RPM of multiple fans to be read. It’s possible that we may add this facility to Duet 2 as well, because Duet 2 and 3 will share most of the firmware source code.
It’s a Smart IR probe.
See the wiki page on connecting and configuring a. Z probe.
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