

Here are two electrostatic versions of a retro Click-Clack toy that was popular in high schools back in '70s. Version 1.0 is the super-budget model. Parts (excluding the power supply) amount to almost nothing. A description of the more expensive and upgraded 2.0 version pictured on the Intro p…
Here are two design variations on a traditional voltaic cell. Both designs are solder less and easy to construct from common household items. The flower and lamp are basically giant paper batteries with the wetted paper acting as a salt bridge between the wires.
Today electronic enthusiasts use so called breadboards for prototyping their projects. These solderless breadboards do not require soldering and are reusable hundreds of times. Okay, you might think, these plastic boards are boards, but where is the bread? Read on in the next step to lift that s…

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