Differences

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--- 2018_intake [2018/03/01 23:47] – created tell
+++ 2018_intake [2018/12/28 14:57] (current) – [Cube-present sensor] tell
@@ Line 28: / Line 28: @@
   * sensitive to stray IR light which could cause false operation
-Since the sensor is facing towards the power cube, the cube would have to be reflecting a lot of IR fo rthis to be a problem.  A shroud over the sensor might help.
+Since the sensor is facing towards the power cube, the cube would have to be reflecting a lot of IR for this to be a problem.  A shroud over the sensor might help.
-Wiring: [[Break Beam Wiring]]
+====== Wiring ======
+We brought the emitter and sensor wires together on a little piece of perfboard.  The wires connect to a 3-pin socket that mates with a common "PWM" cable that runs back to RoboRIO DIO.
+^ pin   ^ function   ^ emitter wire ^ sensor wire         ^
+| 1    | ground      | black     | black      |
+| 2    | +5v power   | red       | red |
+| 3    | signal      |    (none)  | white or yellow |
+Also on the board is a red LED that lights up when the sensor is pulling down the signal wire.  This provides instant feedback of whether the emitter and sensor are aligned with each other and working properly.  The LED was very important for arm assembly and was observed at every pre-match check.
+{{ :img_20181219_173649333.jpg?200 |}}