Touch Activated Relay – How to
Let’s learn how to use a touch switch with a single relay or relay channel to control the relays. So that we can drive high voltage appliances using touch switches.
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TTP223
How to use a TTP223 based touch switch
Today we are going to learn the following about touch switch based on TTP223. Pinout explanation Four different modes of the touch switch Connecting with LED Interfacing with Arduino Adjusting touch sensitivity TTP223 Features Operating voltage 2.0V~5.5V Operating current @VDD = 3V, no load At low power mode typical 1.5uA, maximum 3.0uA The response time max
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