Grove - Touch Sensor

The Grove - Touch Sensor enables you to replace a press with touch. It can detect the change in capacitance when a finger is nearby. It is based on the TTP223-B touch detector IC. The TTP223 is a touchpad detector IC that offers 1 touch key. The touch detection IC is designed for replacing traditional direct button keys with diverse pad sizes. Low power consumption and wide operating voltage are the key features for DC/AC applications. You can place the metallic pad under a non-metallic surface, such as a plastic or glass sheet, and it will still work as a button, which is useful for projects that have to be waterproof. With the help of the touch sensor, you can also make a secret button by placing it inconspicuously behind a smooth surface. For instance, you could place them under a nonmetallic card table, and by casually pressing the right location on a tabletop surface, you could mysteriously control your DIY project.