IR Beam Break Sensors acting up

[wakelessfoil]

@Grumpy_Mike

So tell me without having a schematic how did you wire it up?
Without a schematic how do you know you wired it up correctly, that's you had nothing to compare it to did you?

We designed the system and it isn't that complicated. Most of the wiring is power distribution and the rest is signal wires going straight from the sensor output to the Arduino pins.