Wouldn't this be simpler with an IR LED focused down, with the red LASER as a visible indication of where it is aimed? Or use a visible photodiode or phototransistor, with a deep red plastic cover over it?
Wouldn't this be simpler with an IR LED focused down, with the red LASER as a visible indication of where it is aimed? Or use a visible photodiode or phototransistor, with a deep red plastic cover over it?