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/diy/ - Do It Yourself

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>> No.1395984 [View]
File: 13 KB, 360x240, 2bitphotointerrupter.jpg [View same] [iqdb] [saucenao] [google]
1395984

I've interfaced a ball mouse 3 pin photointerrupter to an arduino and used a 600 ohm resistor on both legs, the middle pin tied to 5v. I have had 3 photointerrupters fail after a few weeks, dc voltage from the output pin rising to 8volts, higher than the source voltage. ac voltage indicates normal. what is happening here? why would it give out ac?

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