Grove - Touch Sensor is based on TTP223-B touch detector IC.
Grove - Touch Sensor enables you to replace the press with touch. Grove - Touch Sensor measures the capacitance of a metallic pad and detects the change in capacitance when a finger is nearby. This is the same technology used in the iPhone touch screen. 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.
- Grove compatible interface
- 2.0-5.5V DC supply
- response time max about 60mS at fast mode, 220mS at low power mode @VDD=3V
- Low power consumption
- 2.0cm x 2.0cm twig module
- Power indicator led
- Inconspicuous button
- Waterproofed electric product
- Button key replacement