Hand Powered Clock

in this instructable, I will be showing you how to build a Hand powered clock.

You will need
1. a digital clock display ( already programmed)
2. a 2 gear power crank
3. tape
 

Step 1 Attaching the clock display

Take your digital clock display and tape it to the top of your power crank.

Comments

[duggerpato]

There's not much detail here. Is the clock powered with a battery backup to keep the time, and when cranked actually shows on the display? If so it would have the function of a clock. If it shuts completely off every time it wouldn't be very useful except to make you hand tired ;)

This would be a good way to show electricity generation at a museum or something though (although a light bulb has always been the popular choice for hand powered teaching).

[beaver84]

It does shut off every time you stop cranking the power crank. This is something I've been trying to work around. It's not a very good design. :(

[Dream Dragon]

Seems like an excellent design to me, an artistic statement on the way our entire modern lives are scheduled.

I agree that it's not very practical, but the addition of a capacitor should help there, given that an ordinary clock can run for MONTHS on a single "AA" type battery, a relatively small capacitor should give you hours if not days. More like the good old fashioned mechanical clocks that needed winding every week.

Good work.