Before the era of solar chargers, people could charge their phones via their bike dynamo. Phones back then charged at a maximum of 500mA, which is close to the 400mA a regular bike dynamo generates.
Nowadays phones require lots more power. A video of this board can be found here.
What you’ll need:
- 50x100mm board
- 4 diodes
1n5817(in order of preference:1n581[7,8,9]or1n400[1,2]) - large capacitor: 10-35v, 750-1000uf
- small capacitor: 10-35v, 10-24uf
- 7805 (don’t get the small 100mA)
What you need to know:
- Always connect the short pin of a capacitor to ground
- The ring side of the diode is the side we get our positive
- The pinout of the 7805 is as follows, hold the text towards you; first is positive input, second is ground and the last is positive output
Position on board
Connecting wires
