Just for you @troll:
So 40 minutes of insomnia later at 0430 CST this morning I have written the code for the beep trim to work, and swapped the location of the wires in the connecter, I just need to plug everything in and try it. Fast forward to 10 minutes ago.
The testing setup. Yes it’s an absolute dumpster fire of cabling, as everything is designed to run from one breakout to the other in a nice loom, not be parked next to each other and stretched across. Also the power distribution is from whatever random pieces of wire I had laying around to fit the spade connectors. Needless to say it will all be redone once I figure out how I’m mounting the power supply. For this demo yes the mains are exposed, obviously don’t do that yourself and practice proper electrical safety.
Here is a video of things working as designed. It starts with the force trim disconnect switch pressed which allows the axises to move freely. Then the switch is released so now the springs are constraining moving it from the trimmed position. Then we use the beep trim to trim back to release pressure, then we move stick left, and trim left to release pressure. Finally, just trimming it around a bit, followed by pressing the force trim deactivation switch again to move it freely.
I have the beep trim set extremely slow (about 20-30 seconds end to end) to give me time to either hit the force trim disconnect or the power switch if something untoward happened. It’s an easy adjustment to change, though I have zero clue what an accurate speed is. Also, with the extension length on it currently, the range of motion is way too large for most aircraft as I have about ~2’/~60cmof movement in each direction reach now.
Also in the trim, I’m going to set trim limits just to prevent breaking the gear on stepper motor with regularity. They’re a 20 minute print, so no big deal, but adding in a limit to the stepper movement is easy enough with a couple of limit switches. If anyone would like the Arduino code let me know and I’ll PM it to you.