Hi Alex,
It is unclear to me whether your gears have a point where more force is needed and motor skips or if the driver is overheating and thermal shutdown is kicking in. You can rule out the latter by checking the chip temperature on your pololu.
While a 2.5A motor can happily handle that current, our common electronics (A4988-based pololus) cannot deliver much more than 1A without additional cooling. While it may seem the more current the better, this is only true while you keep your driver away from thermal shutdown.
I haven't reached calibration yet, but I'd guess that you can use Z moves (that should move the three motors at once) and verifying if the travel in height matches your command. RIght?
It is unclear to me whether your gears have a point where more force is needed and motor skips or if the driver is overheating and thermal shutdown is kicking in. You can rule out the latter by checking the chip temperature on your pololu.
While a 2.5A motor can happily handle that current, our common electronics (A4988-based pololus) cannot deliver much more than 1A without additional cooling. While it may seem the more current the better, this is only true while you keep your driver away from thermal shutdown.
I haven't reached calibration yet, but I'd guess that you can use Z moves (that should move the three motors at once) and verifying if the travel in height matches your command. RIght?