Robot Proximity Sensor Schematic


Posted on Feb 7, 2014

The Proximity Sensor circuit can be seen below. Three red boxes show the additions to the circuit that we already built in Part 2: Motor Control. The new parts used and seen in the schematic below are the GP2Y0A21YK IR Sensor, Headphone Speaker and some LEDs. The analog voltage (between +3. 5v to +0. 0v) is input into the PIC`s


Robot Proximity Sensor Schematic
Click here to download the full size of the above Circuit.

AN0, Pin 1 which is the analog to digital converter on the PIC. This means the PIC can then convert that analog output into a digital integer that we can evaluate and use it to make intelligent decisions. Just for fun, we`ll add a headphone speaker so that the robot can `scream` to warn off anything that gets too close to it. This really just means a little extra software, and it`s a fun way to give some extra output that humans definitely understand. We`ll also grab some LEDs from our assorted LEDs bag and put them into the circuit to give us feedback. Red LEDs will turn on when the proximity sensor detects something that is `too close for comfort` and blue LEDs will represent when the robot is happy.




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