Waveshare Raspberry Pi Touch Keypad

The Waveshare Raspberry Pi Touch Keypad is a small touch keypad shield for Raspberry Pi boards. It provides 16 touch keys and uses the TTP229-LSF touch pad detector IC. The module features automatic recalibration when no key is detected for more than about 4 seconds. It is designed with I2C communication and a compact form factor for touch input applications.

Features of Waveshare Raspberry Pi Touch Keypad

• 16 touch keys
• I2C interface
• TTP229-LSF touch pad detector IC
• Automatic recalibration
• Human body mode protection

Specifications of Waveshare Raspberry Pi Touch Keypad

• 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 Waveshare Raspberry Pi Touch Keypad

1. Connect the keypad shield to a Raspberry Pi board.
2. Use the I2C interface for communication.
3. Read the 16 touch keys through your application.

More Info

• Supports direct connection with Raspberry Pi boards.
• Each touch is detected with automatic recalibration behavior.
• The product includes a TTP229-LSF based touch sensing design.