Reply to "IR or Optical Sensors"

Hi Stan,

Well I finally got almost all of the components in the schematic of yours I have attached. Only thing different is the diode, which is a 1N4005. Also, I only connected a single pair emitter/sensor. I checked the emitter with my cell phone and it's on. I don't know how to check the sensor. Can I just have it disconnected, hit it with IR and measure the forward resistance to see if it drops?

The problem I have is that the relay is energized with or without the emitter shinning on the sensor (can't get the relay to go to the OFF state).

In addition, where you crossed out the PB switch, did you mean to have a connection across the terminals where the switch was (I did not do that)?

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4/10/151:22 AM

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