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This Instructable will show you how to make a very simple water powered calculator. I built this because there was a time that we forget to buy a supp...
You will need: - A Calculator - Carbon Rod/ Copper Rod - A 1x1 Inch Aluminum Foil - A Small Cylindrical Container - Two 3 Inch Wire - Multi Purpose Pl...
Use a drill or a pointy object to make some holes located on the bottom and lower side.
Glue the carbon rod in place as the positive rod. The carbon rod is from a used AA battery. Warning: Never open alkaline "it is messy".
Glue the foil in place as the negative plate.
Connect the wire of the water battery, and glue it so it won't leak. Positive wire connected to carbon rod while negative is connected to the foil / z...
Disassemble the calculator with a screwdriver.
Connect the water battery to the calculator. The carbon rod is positive while the aluminum is negative. Be sure to disconnect the solar panel.
Put it back together again.
Liquid Rating: Water - Good Water With Salt - Better Vinegar - Best
You are done. You just need to refill it a again after it run-out of power. Adding more water batteries would be better.
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Posted:Jul 10, 2010
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