Quote:
Originally Posted by Nirnaeth
Our team has enough depth in terms of mentors and students that we'd like to add some sensors to our robot. Since we've literally never added a single sensor to any of our robots, I was wondering if we could solicit some advice.
Our specific application: We have an arm that wants to rotate back and forth through a 90-degree turn. The arm is connected to a window motor. What manner of sensor should we use? I'm assuming some type of rotary encoder?
Thanks! 
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Use a potentiometer and connect it to an analog input.
Or use an encoder and connect it to DIO on the DSC.
Or use a couple of limit switches if you just want to go from extreme to extreme without wanting to control at positions in-between.
Do some research. There are hundreds of recent posts about this topic. Do a little reading to get some background, then come back here and ask questions. We'll be glad to help.
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potentiometer, encoder, PID, limit switch, load balancing, surgical tubing