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LED Ring

oshparkoshpark wrote 01/06/2018 at 05:13 • • 2 min read • Like

@Jens Hauke designed this charlieplexed 20 LED blinker controlled by an ATTiny45 for the Hackaday Coin Cell Challenge:

156251514462780263LED Ring

This is a small blinky with 20 LEDs powered by one CR2032 coin cell and with an ATTiny45 brain. The firmware is written in plain C and compiled with the avr-gcc toolchain. The PCB is a two layer design made with KiCad.

https://hackaday.io/project/28827-led-ring https://hackaday.io/project/28827-led-ring

Space efficient daisychained LED placing with shared anode/cathode soldering pads.

schema https://hackaday.io/project/28827-led-ring

Firmware and gerbers are available on GitHub:

jensh/attiny-20led-ring

Here is a video of the LED in action:

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Jens Hauke wrote 01/06/2018 at 13:44 • point

The PCB is also shared on OSH Park: https://oshpark.com/shared_projects/jO4MzzQs

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oshpark wrote 01/06/2018 at 17:02 • point

thanks for sharing!

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