[Rick TYler]

Originally Posted by jbbjjbt

But sometimes either the encoders don't read or the loop processes to slowly and the robot goes way past where it is supposed to stop. It is somewhat random as it will work one run and not the next. It is frustrating and time consuming.

Have you seen this? Do you have any ideas how to fix it?

I'm not Phil and I've only worked with Vex and FRC encoders... so, for what it's worth.

You sometimes get this if your encoder is spinning too fast for the computer to keep up with it. Adding a gear to a half-speed shaft running just for the encoder can fix this. In other words, if your encoder is on your drive axle, add a small gear to the drive shaft driving a big gear on another axle with an encoder on the shaft. The second shaft doesn't do anything except drive the encoder running at half speed.

If it's more subtle than that, let's wait for someone who knows what they are talking about.