Conductive leaf
[...] The circuit will be completed when the user touches the input (the stem) while holding on to ground. Both are copper-plated for easy identification. The LEDs turn on and off when the input is touched. Video. [...]
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[...] The circuit will be completed when the user touches the input (the stem) while holding on to ground. Both are copper-plated for easy identification. The LEDs turn on and off when the input is touched. Video. [...]