photo detector and LED proximity sensor

Using Arduino Sensors
1

I have a project in mind, but really not sure how to approach it. I would like to have a flashing LED (UV or IR) that either flashes at a predetermined rate (say 100ms as an example), or in a pattern. The receiver would be a photo detector that is looking for that 100ms flash or pattern, then does something (probably make other LEDs light up to be pretty or triggers a servo to start).

I am fairly new to Arduino programming, the programming I have done has relied on finding examples and modifying them. I would greatly appreciate an example.

I believe I scoured the forum sufficiently to warrant a new topic, if not, I apologize.

Regards,
Richard

2

You could use an IR remote control receiver. It will detect IR that is modulated at about 38 kHz. You could use one Arduino (even a very small one like a Nano) send out a short 38 kHz pulse a few times a second.