Lamp switches can be kind of a pain—either you can't reach them comfortably, they break within a few months, or they just take a lot of force. With an inexpensive touch switch, you can turn any metal ...

Recently an ad on YouTube about an acoustic light sensor/switch module piqued my interest. Out of curiosity, I contacted the online vendor and bought a pair. Named MR-SK50A, the module is less popular ...

You can buy small modules with capacitive touch detection ICs — most often it’s the TTP223, a single-button capacitive model with configurable output modes. These are designed to pair with a ...

This module is based on a touch-sensing IC TTP223B capacitive touch switch module. In the normal state, the module output is low, low power consumption, when a finger touches the corresponding ...