homie rollo switch

A touch replacement for a german shutters belt. You can drive your shutters via WLAN (MQTT) or over the touch wall switch.

cut the 4 buttons from the TTP224 and solder a wire on the caps. You need 4 wires to the SonOff Dual (Vcc, GND, Button1, Button2).
You must jumper on TTP224:
AHLB - Direct mode, CMOS active low output
SM - Single key mode
TOG - optional if it should be used as a switch and not a push button

Datasheet:
http://www.tontek.com.tw/download.asp?sn=373

SW:
https://gi