Recent content by dsimp

Thanks for the responses. I will look into those solutions. The detection would only need to occur from a short distance (within 10cm). The lighting is a little bit of a wild card, but it will be used indoors with variable lighting.

I'm doing a project where I need a sensor to monitor a standard green LED and determine if it is ON, OFF, or BLINKING. I have been considering using a phototransistor or photodiode, but I am not sure how I would use one of these to tell the difference in the LED being on or blinking. Does...