Add a nice sixteen-button capacitive-sensing keypad to your project with these TTP229 16 Channel Digital Capacitive Switch Touch Sensors from PMD Way. They're easy to use, simply connect between 3.3 and 5V DC to the power/GND pins - and the output pins will change state when pressed. Onboard LEDs indicate button status so you can easily tell the status, or just have fun blinking the LEDs. This board is also useful if you're interested in making your own touch-device as you can prototype with the TTP229 IC with this unit then build the IC into your own PCB. Schematic: Click here for schematic. Don't forget to check out our full range of touch sensor breakouts if this doesn't meet your needs. And as always, all orders receive free delivery. And remember ... if you: can't find what you need not sure what to order want a bulk deal need technical support or just want to have a talk ... Please email us via [email protected]. To keep up to date with new products, news, tutorials and more - we're on x, Facebook, Instagram, threads, reddit, and instructables.