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Touch Buttons
pavhofman edited this page Jan 14, 2017
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I find touch buttons the easiest decently-looking controlling element for DIY. The TTP224 4-channel board costs 0.60USD on aliexpress. The board is connected to 4 digital inputs of arduino, powered by 3.3V.
The four touch pads are made of standard Allen (hex) key black M3 bolts for a few cents.