TTP229bsf s 4x4 touch keyboard code on arduino micro board,tested successfully. the board is buy a X宝. There are two sets of jumpers 2x8 holes on the board, you can connect the 2,3,4. Code is http://forum.arduino.cc/index.php?topic=248748.0. I looking for a long time to find out the Solutions, so share this with you, thanks for the original author.

TP229_TouchKeyboard.ino

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