RPi Touch Keypad

Description: Capacitive Touch Keypad Designed for Raspberry Pi.

Features:

• Supports any revision of Raspberry Pi (directly-pluggable)
• Provides your Pi with 16 touch keys
• Features TONTEK TonTouch touch pad detector IC TTP229-LSF, supports up to 16 keys with adjustable sensitivity and built-in LDO
• The system re-calibrates automatically when all keys are not detected touch more than about 4 seconds

Specifications:

• Interface : I2C
• Keys : 16
• Sampling rate : 8Hz
• Human Body Mode : 6KV
• Operating voltage : 2.4V-5.5V
• Operating temperature : -40℃ to +85℃
• Storage temperature : -50℃ to +125℃
• Dimensions : 8.5CM × 5.6CM

How to use:

• After power-on have about 0.5sec stable-time. During the time do not touch the key pad, and all functions are disabled

Pinouts:

• VCC : Power supply (2.4V-5.5V)
• GND : Ground
• SDA : I2C SDA
• SCL : I2C SCL

Development resources: schematic, demo code, datasheets, etc.
Download: www.waveshare.com/wiki/RPi_Touch_Keypad