Grove - 12-Channel Capacitive Touch Keypad (ATtiny1616)

The Grove 12 button Capacitive Touch Keypad is built around the ATtiny1616, an AVR® 8-bit processor running at up to 16 MHz. ATtiny1616 is a low-power, high-performance chip integrated QTouch® peripheral touch controller which supports capacitive touch interfaces with proximity sensing and driven shield. With this module, you can easily create an arduino password keypad or a DIY phone keypad.

We made this keypad into a 3x4 form, just like the layout of a mobile phone keyboard. The traditional keypad requires 3 vertical lines and 4 horizontal lines to scan, which will occupy 7 I/O pins of the microcontroller. With the help of ATtiny1616 and Grove connector, only RX and TX two pins are enough for Grove - 12-Channel Capacitive Touch Keypad. You can easily use this module with a microcontroller with a hardware UART interface, or you can use the software UART to read the button input with two normal I/O pins.

All in all, the Grove 12 button Capacitive Touch Keypad is an easy-to-use module that requires very little code, especially when you use it with Grove compatible mainboards, no soldering, just plug and play.

Note

We've Released the Grove Selection Guide and hope to help you find the Grove suit you best.

Features

• Low Power ATtiny1616 controller
• 3.3V / 5V compatible
• Capacitive touch, high sensitivity
• 12 button keypad
• 4 pin Grove UART connector
• On-board LED indicator

Applications

• Phone keypad
• Password access
• Extended input interface

Hardware Overview

ECCN/HTS