Praise the Lord, I have voltage output! I haven’t connected a motor yet, but by past experience, anything that makes it this far will work just fine.
What an insane journey it’s been. Almost a year of doing the same thing over and over and getting different results every time. I wish this had given me a clue to get Gooser4 working, but aside from being configured for 6PWM, it’s exactly the same. And 3PWM works fine on GooserCS, so that’s not the problem.
It arrived like normal without having to pay any import duty, so I will continue using JLC’s “global standard direct line” shipping.
I went ahead and made the stencils. The one for stepstick worked great thanks to its small size, while gooser was moderately successful. The stencil isn’t 100% flat, which results in paste getting sucked underneath when it springs back up. I used a toothpick to clean up the excess. Next time I’ll try putting out a big wad of paste and swipe it across once instead of scraping a small lump around repeatedly.
To maximize my chance of success, I assembled it with new driver and capacitors and mosfets. The MCU and current sensors are the ones I had on Gooser3 (which were originally pulled from GooserCS), which can be tested without risk of explosion while powered by the STlink.
Now I need to order components to assemble more of them, but there seems to be a shortage of DRV8300DRGER. LCSC, Mouser and Digikey are all out, and none expected for at least 3 months. There are a few on ebay, but they’re not cheap.
I also still can’t decide which of the mosfets to buy from post #82.