After more then 2 years my old bicycle generator circuit is dying of corrosion. It’s time to rebuild it (and a better enclosure to protect it as well).

I used a full bridge rectifier with a 470uF capacitor at the output side of the rectifier the step down is a cheap module from AliExpress. On the bottom side of the module are soldering pads to select a fixed output voltage, in my case 5V, and the potentiometer must be removed.

I reused the potentiometer to set the brightness of an indicator LED and an ultracap for standby lights.

My current light setup are two 3W LEDs in a cheap metal enclosure. Although not fully powered, with 5V the light output is more than enough for a bicycle.

Categories: Hardware


Dominik Kogel · 24. March 2020 at 13:09

Nice Shit. Maybe think about making it more waterproof?

    Andre · 24. March 2020 at 13:50

    I’m on it 🙂

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