Robot Laser Tag Photoresistor Circuit

[ThereIam]

We're trying to build a circuit that will detect when a laser crosses a photoresistor and light an LED. What we're trying to do is have three different photoresistors, and three diffferent LED's, each of which correspond to one photoresistor. The idea is that when one photoresistor is struck by the laser, the corresponding LED will stay on. We were hoping to find an IC that would make the job a bit easier but we're new to this stuff and any pointers would be very much appreciated.

 

[mdjensen22]

You could most likely rig a circuit using a set of flip-flops or latches to do this.

Otherwise, you could use a counter chip and some Boolean logic to perform what you want.

Of course if neither of those approaches sound appealing, you could always use a small processor to accomplish this... If you haven't programmed before, I'd really give the other approaches a shot first (breadboard) and see what you can come up with.

EDIT -
There is a massive selection of standard logic circuitry - Google sequential logic circuits and see what you come up with.