Author also did something similar with usb and different voltages https://solar.lowtechmagazine.com/2022/03/how-to-build-a-practical-household-bike-generator/

Author also did something similar with usb and different voltages https://solar.lowtechmagazine.com/2022/03/how-to-build-a-practical-household-bike-generator/ https://solar.lowtechmagazine.com/2022/03/how-to-build-a-pra... Well worth a read!