Battery-free 5 volt project power

Step 16 Application

I used the dynamo supply to power a Luminary LM3S811 Evaluation board that prints "5V - no battery!" to an OLED display. Because of the chips used on this board, it draws a fair amount of current...about 80 mA. Consequently it does not run very long on the dynamo power supply until needing some cranking, but it runs long enough to flash different text on the screen. The dynamo power supply will work best with circuits that draw a few mA of current. Circuits may run for up to 10 minutes with no cranking, depending on their minimum operating voltage.

I also tested the dynamo supply with a hobby motor. While cranking, the motor was humming along with 50 mA of current.

Comments

[GENERALCHAOS]

well done i want that typ of flash light >.<