3 LED control

Traffic Light

Phase 4

This circuit provides the same sequencing as a traffic light except all the delay times are the same and must be adjusted by the circuit builder. The circuit also provides the following possibilities:

- Tiny Knight Rider light show (back and forth blink)

- 3 bit binary output

- Three level signal indication (low, medium and high)

Challenge your students or come up with your own applications that only require a software change to indicate sensor values, put on little light shows or indicate binary values.

Three LED sequencer