I'm trying to develop a line detection sensor that basically sends back a TTL high signal when the sensor sees a line of a certain colour. I'll probably be using a white strip of insulation tape on a blue floor.
Active Robots sell one of these sensors for $11 but I'd like to make one myself.
http://www.active-robots.com/products/sensors/sensors-lynxmotion.shtml
I'm guessing that it require an IR LED and and tunable IR detector but I'm not too sure how to go about implement this detector. Could anyone provide a circuit diagram or point me in the right direction? Any help at all would be very much appreciated.
Active Robots sell one of these sensors for $11 but I'd like to make one myself.
http://www.active-robots.com/products/sensors/sensors-lynxmotion.shtml
I'm guessing that it require an IR LED and and tunable IR detector but I'm not too sure how to go about implement this detector. Could anyone provide a circuit diagram or point me in the right direction? Any help at all would be very much appreciated.