TDDY: Traffic Data Display
The TDDY is a vehicle-mounted, receive-only traffic warning system designed to minimize the risk of vehicle accidents. An ATmega128 microcontroller and a matrix of 512 bicolor LEDs organized as a map of the Los Angeles freeways comprise the system.
Link: http://www.circuitcellar.com/avr2004/DA3437.html
The TDDY is a vehicle-mounted, receive-only traffic warning system designed to minimize the risk of vehicle accidents. An ATmega128 microcontroller and a matrix of 512 bicolor LEDs organized as a map of the Los Angeles freeways comprise the system.
Link: http://www.circuitcellar.com/avr2004/DA3437.html