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).
Simple Knight Rider lights Circuit
Note
That VDD and GND for the ICs are not shown in the circuit drawing.
Simple Knight Rider lights Circuit
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 |