I’ve always been a little nervous about riding my longboard around in the dark, so I decided to create a dynamic light for the back of my helmet.
It is an extremely simple circuit. I hooked up an Adafruit Neo Pixil Ring and connected it to a Trinket. Other than that it is a li-po battery and an on/off switch. Everything is hot glued on so it is semi-permanent.
All the code for the trinket and a wiring diagram can be found at Adafruit.
There’s a video of it in action below.
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