A vision system for FRC team 1683's robot. Using an OpenMV camera with a green LED ring light which is mounted on our robot's turret, we successfully detect targets and retrieve distance to the target and angle to the target. Check out https://blog.vmallela.com/frcvision for more details
Use the OpenMV IDE and make sure to change the COMMS_METHOD to "print" in order to see the output in your OpenMV terminal.