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LED turn signal car light sequencer

Former Member

What about an LED turn signal car light sequencer?

Very usefull and pretty Dawn Light style.

  • in reply to Former Member

    Possibly.

    I was referring to the triple tailights found in some of the sixties cars.

    The original electro mechanical device is VERY expensive ... hence the replacement units using electronics.

     

    The Audi one just starts at 1 and sequences to xx than starts again.

    They obviously detect the flasher signal or they don't use the traditional flasher which is also possible.

     

    mark

  • in reply to mcb1

    Audi uses since 2009, a digital blinker module on almost every model.

    So, no problems with the flashing cadence or load power consumption.

    There is also no problems with canbus errors.

    Here in Europe, this is street legal as long as the brightness is the same as a OEM lamp.

    I'll try to build a prototype. Instead of a regular SMD led, I want to use some Cree led, much more powerful in brightness.

  • in reply to Former Member

    Here in Europe, this is street legal as long as the brightness is the same as a OEM lamp.

    That's a benefit.

     

    You might be surprised how bright the Neopixels are running at 5v.

    There are the driver chips (WS2811) to allow you to use Super High brightness LEDs.

     

    IMO the Cree type would suit single lamp tailights, but not really suitable for the front indicator shown in the video.

     

    Mark

  • in reply to mcb1

    My car is an audi a3 sportback 2009. Non xenon. So no problem with space for the lights.

  • in reply to Former Member

    Rui Lima wrote:

     

    Can anyone help to create something like this.

    Here is a link to the wiring diagram and parts to the circuit I had previously mentioned. http://homemadecircuitsandschematics.blogspot.com/2011/12/how-to-make-car-led-chasing-tail-light.html

     

    If you wish to sequence more than 6 LEDs, you will either need to program a microcontroller or connect multiples of this circuit in a series.

     

    The title describes it as a taillight/ brake light circuit. In the description, it mentions the circuit may also be connected to the turn signals.

  • in reply to itsworthing

    Looks nice... have you gone any farther with this?

    Have you considered adding some dwell time when the last LED is ON... before it restarts the sequencing loop?

    ...or possibly fade out: once the full string is lit, sequence OFF the string in like manner.

     

    The "ALL_OFF" at the end of each sequence just seems very 'abrupt'... when the sequence-ON seems so smooth.

     

    I assume the last demo was "emergency flashers"?

    What did you do for "Brakes" function... just "ALL_ON"?

    I'd be interested in seeing what you have, if you're willing to share.

  • in reply to itsworthing

    I also meant to ask... how are you planning on driving these?  Are you going to tap into the "pre-blinker" wire that comes from the turn signal switch?

    ...or do you plan on running sequentials for the front turn signals as well?

  • I've been working on a NeoPixel CANBus interface for a while now, I have various videos during development on YouTube:

    Brakes:

    Left Indicator:

    Right Indicator:

    Reverse:

    There are also variations of these with night lights on where the top and bottom row are lit red.  I'm now working on the CANbus interface to the car which should be completed very shortly.

     

    I am printing an enclosure for the strip to mount on the rear windscreen.