So our DR4B isn’t working, it keeps slopping to the sides. We’ve balanced our rubber bands, we’re using a universal axle, we’ve checked all of our motors and their powers, and we’ve added a crap ton of support and nothing is working. The only things I can think of that we haven’t done:
We don’t do PID
We have non triangle banding right now.
Does anybody have anything else we can try? We have a comp Saturday and we’re getting desperate.
are you using axels for all your gear joints? if so, replace them with screws and nylock nuts, only use the axels for the gears connected directly to the motor. (you probably already knew this, but i’ll post it anyway)
also, add a c-channel with a bearing in the middle to support the “universal axel”, not sure if it will help, but it is worth a try.
How wide is the DR4B? And is it powered from the bottom or the middle? In either case try to equalize the friction on the two sides. The only other thing I would check is if all the motors are spinning the same speed. Not what your sending, but what they are actually doing. One of ours spins about half speed, damaged electrically somehow. If that turns out to be the case, replace the MC29 and the motor one at a time to see which it might be.
If nothing else mentioned above, I would check for friction imbalances. Try disengaging the motor axles and checking that there isn’t any binding etc. Also, had it ever worked? Also, pictures… Yeah, do that.
It usually tips one way when you’re going up and one way when we’re going down. Sorry I haven’t been able to get pics, my phone isn’t a smartphone and we don’t have the cable necessary for uploading to the computer.