Hey everyone,
I would like to build a box to act as a target for a handheld laser pointer. The box I have in mind would have several individual LEDs on the front of it to act as the targets. There will be plenty of space between LED's. What I want to do is have each LED light when the laser beam hits it. After the beam hits it, it should stay lit.
I haven't been able to figure out a circuit to do this. I have seen plenty of ways of using an LED as a light sensor, but haven't seen how to make it light up when this happens. I'd prefer a way to do this without using a microcontroller, if possible.
Any ideas?
I would like to build a box to act as a target for a handheld laser pointer. The box I have in mind would have several individual LEDs on the front of it to act as the targets. There will be plenty of space between LED's. What I want to do is have each LED light when the laser beam hits it. After the beam hits it, it should stay lit.
I haven't been able to figure out a circuit to do this. I have seen plenty of ways of using an LED as a light sensor, but haven't seen how to make it light up when this happens. I'd prefer a way to do this without using a microcontroller, if possible.
Any ideas?