Other designs


Knight Rider lights for model cars.

Knight Rider lights

This simple circuit drives 6 LEDs in 'Knight Rider scanner mode'. Power consumption depends mainly on the type of LEDs used if you use a 7555 (555 CMOS version).

Here's the circuit:

Schematic

Note that VDD and GND for the ICs are not shown in the circuit drawing.


Pin-outs:
(7)555 4017
1 GND 1 Q5 9 Q8
2 TRIGGER 2 Q1 10 Q4
3 OUTPUT 3 Q0 11 Q9
4 RESET 4 Q2 12 CO
5 CONTROL VOLTAGE 5 Q6 13 NOT ENABLE
6 THRESHOLD 6 Q7 14 CLK
7 DISCHARGE 7 Q3 15 RESET
8 VDD 8 GND 16 VDD


This page was created by Oscar den Uijl, oscar@den-uijl.nl