TTP229 4×4 16 Channel Capacitive Touch Keypad

Overview

The TTP229 4×4 16 Channel Capacitive Touch Keypad is a compact, high-sensitivity touch input board based on the TTP229 capacitive touch sensor IC. Its 4×4 grid of touch keys provides reliable, silent input without mechanical wear. The module is designed for quick integration into Arduino projects, home automation panels, smart locks, and other embedded systems.

Key Features

• 16-key capacitive touch layout (4×4 matrix) for compact input panels
• Onboard TTP229 IC with selectable 8/16 key mode via jumpers
• I2C-like serial output for efficient data transfer
• Programmable key sensitivity using onboard jumpers
• Standard header pins for easy wiring and prototyping
• Silent operation with no moving parts for long service life
• Compact PCB size: 64mm × 49mm, fits tight enclosures

Product Specifications

• IC Used: TTP229 capacitive touch sensor
• Number of Keys: 16 (4×4 matrix)
• Operating Voltage: 2.4V to 5.5V
• Interface Type: Serial (I2C-like)
• Board Size: 64mm × 49mm
• Output Type: Digital key data
• Key Sensitivity: Programmable via onboard jumpers
• Compatibility: Arduino, Raspberry Pi, ESP32, PIC, AVR, STM32

Compatibility and Platforms

This keypad works well with popular microcontroller platforms. Typical compatible boards include Arduino Uno, Nano, Mega, Raspberry Pi, ESP32 boards, and other MCU families such as PIC, AVR and STM32. Use the serial output or read individual data pins depending on your chosen interface.

Wiring and Quick Setup

• Power: Connect VCC to 3.3V or 5V and GND to ground (module supports 2.4V to 5.5V).
• Data: Use the module’s serial output pins to read key data. The TTP229 provides an I2C-like serial interface; check the module pin labels for DOUT/CLK or SDA/SCL style signals.
• Mode selection: Set the onboard jumper to select 8-key or 16-key mode as required.
• Sensitivity: Adjust onboard jumper settings to tune touch sensitivity for your enclosure or surface material.
• Testing: Start with a simple digitalRead sketch (for Arduino) or a small Python script (for Raspberry Pi) to poll key states and verify operation.

Recommended Use Cases

• Home automation panels and control interfaces
• Smart locks and security keypads
• DIY electronic kits and wearable projects
• Robot control panels and menu navigation
• Creative digital interfaces and interactive installations

Why Choose the TTP229 Keypad for Your Project

The TTP229 touch keypad provides a modern, reliable alternative to mechanical buttons. Its capacitive sensing gives instant response, long-term durability, and a sleek feel. The compact board and programmable sensitivity make it easy to integrate into custom enclosures and panels while maintaining accurate touch detection.

Why Buy From Colgroad (Pakistan)

At Colgroad we supply verified electronic modules and components across Pakistan. Buying from us gives you local support, fast delivery, and access to quality parts that are ideal for hobbyists, students, and professional makers. Our stock includes genuine TTP229 breakout boards ready for immediate shipment.

Order Now

Upgrade your project with reliable capacitive touch input. Order the TTP229 4×4 16 Channel Capacitive Touch Keypad today and enjoy easy integration, precise sensing, and fast delivery across Pakistan. Images are for illustration purposes only.