Jumbo LEDs Make For A Handy ATtiny Beacon

Inspiration can come from anywhere. Sometimes it’s just a matter of seeing an interesting part that you want to fiddle around with badly enough that you end up developing a whole idea, and potentially product, around it. That’s how [Bobricius] found himself creating this very slick little warning beacon, and looking at the end result, we think he made the right decision.

The Kingbright DLC-6SRD “jumbo” LED is actually six individual emitters built into a plastic diffuser. Interfacing with the device is simple enough; each LED has its normal anode and cathode leg, all you need to do is power them up. What [Bobricius] has created is a simple PCB design that the DLC-6SRD can plug right into, complete with a 2032 coin cell holder on the opposite side.

Of course, just lighting up all six elements at the same time wouldn’t be very interesting. [Bobricius] is controlling them individually right off of the digital pins of an ATtiny10 with the help of some Charlieplexing. This makes all kinds of interesting patterns possible, and as demonstrated in the video after the break, the current iteration of the project uses some very simple code to “rotate” the LED as if it was the flasher on an emergency vehicle.

The addition of a few blinking LEDs can make a world of difference in terms of nighttime visibility, so a cheap stick-on module that adds such a distinctive light pattern could be a very important safety device. It could also be useful for UAVs, following the FAA’s new rules which would mandate anti-collision lights for night flying.

3 thoughts on “Jumbo LEDs Make For A Handy ATtiny Beacon

  1. Radio Shack had 20mm LED with 12 pins that worked like 6 LEDs in a single dome. Came in red and green. I got a few from one store that was going out of business. It is probably rebranded Kingbright LED.

  2. Kingbright also make LEDs in SOT-23 packages (e.g. AM23SRD-F). I like the idea of sticking a power led in among a bunch of other SOT-23 components, one of which just happens to glow bright red when powered up.

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