We're making a bike-powered USB charger and we have (almost) no idea what we're doing - Electrical Engineering Stack Exchange
DIY Bicycle Dynamo USB Charger for Smartphones and Battery Packs | HokkaidoWilds.org
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Bicycle Pedal Power Generator FAQ Frequently Asked Questions
Make a Dynamo to Charge Your Phone | Voltaic Systems Blog
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Bottle dynamo - Wikipedia
DIY Bicycle Dynamo USB Charger for Smartphones and Battery Packs | HokkaidoWilds.org
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BicycleHobo.com — Dynamo Chargers Outside of the Hub
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Bicycle Dynamo Battery Charger Circuit - Homemade Circuit Projects
Bicycle Dynamo Battery Charger Circuit - Homemade Circuit Projects
Using a bicycle dynamo to charge a battery bank and power an Arduino Nano : r/arduino
Bicycle Regulator
Using a bicycle dynamo to charge a Battery : r/AskElectronics
