From Start To Finish: TTP223 Touch Sensor

Nice little IC, lots of alternatives out there, like the AT42QT1012 but the TTP233 is dirt cheap.

Ebay UK ~£0.20 each : http://rover.ebay.com/rover/1/710-534...

LCSC Electronics £0.11 each : https://lcsc.com/products/Touch-Scree...

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I don't have a Patreon or a regular donate thingy, I get by fine. That said, if you are mega rich and fancy buying me a coffee, breadboards or CMOS ICs - https://paypal.me/DavidWattsYT
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If you want to get in contact Twitter is probably the best way @mrdavidjwatts

http://www.davidjwatts.com