Hi all,
I'm back with another non-Printrbot troubleshooting question.
The DRV8825 stepper drivers on my Velleman have been acting up recently after I tried increasing the current on them. Basically, the printer was having some trouble with some high-speed travel moves, and since the drivers were stone cold, I figured I could give the pots another 20˚ or so. I tried printing the object again, and it made it through the travel move. But then it started skipping steps and the drivers were really hot.
I turned them back down to where they were, and messed around with some accel values, but now the drivers get boiling hot no matter where I have the pots at.
My question is whether it's possible for a stepper driver to incur permanent damage due to overheating. Hopefully someone with more electronics knowledge can explain what might be going on.