Automatic limit switch

[zaphodp.jensen]

An encoder would work best for this. To detect a bind, you would have the encoder, on a turn of the encoder, start a timer. If that timer reaches a certain value before the encoder triggers again, you would stop the motor. If it triggers, you would restart the timer again at zero.

If you wanted to stop after a number of revolutions, you would use a variable that would increment or decrement after a certain number of ticks, and if that number got to be higher or lower than a threshold, you would stop the motor in that direction, but allow it to turn the other way.

Sidenote about limit switches: Even easier, you could use the built in limit switch functions on the Jaguars to stop the motor. This wouldn't work for your application, but it is great for just about everything else! You just have to use a normally closed switch, and plug it into the limit switch ports (Removing the existing jumpers)! Simple, easy to use, save a DIO, and it relieves the cRIO of having to deal with the code!