Electronics > Beginners

Sequential tail lights

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robjodicarter:
I think I have found my answer.

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tpowell1830:

--- Quote from: drussell on September 24, 2018, 11:18:11 am ---
--- Quote from: robjodicarter on September 24, 2018, 11:14:49 am ---Like this? Would that work?
--- End quote ---

Using arduinos for this is total overkill.

You can use one simple, robust analog chip to get the job done.  No programming, no crashing microcontrollers or potentially flakey digital stuff mounted in your taillight.  :)

--- End quote ---

Agreed, the 3914 is fine, an adjustable RC circuit and done. The LEDs are a matter of choice. The vehicle already supplies the timed pulse.

Richard Crowley:
This is what I would use.  They are dirt-cheap (BrEnglish: "cheap as chips"), automobile power-safe, and with a relay output, you can use practically ANY arrangement of LED, incandescent, laser, plasma, nuclear explosion, or whatever kind of light you wish.  And you can string any number of them in series, whatever you wish.

https://www.ebay.com/itm/DC-12V-Relay-Module-Adjustable-Delay-Time-Switch-0-10-Second-NE555-Timer-Board/172460306953



I would be sure to connect the FIRST light DIRECTLY to the brake-switch circuit (with no delay) so that if all the fancy, frivolous animated lighting lash-up fails, you at least have minimal safety brake lights.

james_s:
Don't get ahead of yourself, let's get a design nailed down before you start ordering parts. It's simple enough to be designed on paper with reasonable confidence that you can build it and it will work.

Do you have the lights themselves figured out? Are you using off the shelf parts or planning to fabricate them yourself?

robjodicarter:
I actually decided I will use these, they will do all I need and allow me to use cob led bulbs that should be really bright. Please let me know if I would need anything else.
Thank you
Rob

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