Tail Light Sequencer

[Ald]

How can I modify the circuit to create a right turn signal (of course would mirror it for the left turn signal). Using only three LEDs.

To show the turning direction, by turning on three LEDs in sequence (no lights; inner light; inner two lights; all three lights; repeat).

There is also an emergency flasher mode, HAZARD, that requires all six lights, on; then all six lights off; repeat).

The inputs are to be implemented using push button switches and the outputs with LEDs. I would use two push buttons switches to select, LEFT or RIGHT turning and a third push button switch for the hazard light.

 

[simonbramble]

I designed a Knight Rider Strobe some years ago. Would this be of use? It was based on a PIC microcontroller and drove normal (not high brightness) LEDs. Let me know and I will give you the code and schematic

 

[colin55]

**broken link removed**

 

[4pyros]

colin; Thats neat! but the OP needs all lights to flash when HAZARD is on. I would use a micro. Is this for a car?

 

[colin55]

That's simply gating

 

[4pyros]

I did it many, many years ago using relay and diode logic for a golf cart, I was about 12 then. It all ran off 36 volts.
The big questoin at this time is what voltage the OP needs to run off. Maybe use CMOS?
Andy