This is almost a new thread.
Sounds like a fun project. I can envision going into some public place and ‘shooting’ the TV.
CharString wrote:How do you make sure you don't overcharge your caps?
Charging a capacitor is not the same as charging a cell or battery.
Jinseok cannot ‘over charge’ a 5.4-V cap from a 5.0-V source (like USB).
Although, it could be possible to exceed 5-V into capacitors from a “pump-action dynamo”,
I would quickly get tired of trying to charge a 5-F cap this way.
Each pump generates only a tiny amount of electrical energy. It will take a long time to charge up 5-F.
It may not even be possible to charge the 5-F cap to 5-V due to leakage current within the cap.
If you have some dynamo type device that could over-charge the cap then,
a red + blue LED across the cap would begin conducting at about 5-V, preventing 'over-charging'.
Most of the energy needed to make the TV-B-G work is used by the IR LEDs.
That is why people are looking at rechargeables and high capacity AAs.
If you may have the space in the super-soaker, consider installing three ‘D’ cells instead of AAs.
If you use C or D cells, you will also need to add a series resistor to the IR-LEDs.
Sounds like fun though, John