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Re: EM57 Resolver connection, need help
Posted: Tue Oct 21, 2025 6:26 pm
by johu
syncofs is the one you're looking for. The other is not relevant for resolver operation.
Leaf motors usually run fine at syncofs=0 and can be optimized by tuning.
Re: EM57 Resolver connection, need help
Posted: Wed Oct 22, 2025 9:42 am
by Razor8
UPDATE:
I managed to tune the engine.
It spins forward and backward, accelerates, and stops.
Thanks to everyone who responded.
I apologize for my rambling questions and lack of attention.
Re: EM57 Resolver connection, need help
Posted: Wed Oct 22, 2025 4:03 pm
by Jacobsmess
What was the issue? It's always helpful to publicly document this to help others with similar issues.
Re: EM57 Resolver connection, need help
Posted: Wed Oct 22, 2025 8:32 pm
by Razor8
Jacobsmess wrote: ↑Wed Oct 22, 2025 4:03 pm
What was the issue? It's always helpful to publicly document this to help others with similar issues.
I couldn't find a tutorial video or a setup article on the wiki until MANNY let me know.
The main reason I couldn't set up the resolver for so long was because I thought the S1, S2, S3, and S3 pins on the board corresponded to the same pins on the resolver. If there was a discrepancy, it meant I'd made a mistake in the installation. I triple-checked.
The second reason I couldn't figure it out for so long was that the valid resolver graph in the tutorial video didn't look like the graph I had. They were quite different.
And the third reason was that I tried using other people's ready-made firmware. They had very strange SINCOSOFS values, the sine and cosine midpoint offset values. And with these firmware, nothing worked at all, no matter what resolver combination I used.
I tried to extend all this on 5.05, 5.24 and 535 versions.