The AD7147-1 Capacitive Touch Breakout Board

The AD7147-1 Capacitive Touch Breakout Board is a compact, high-performance capacitive sensing module based on the Analog Devices AD7147-1 IC. It provides 12 capacitive touch input channels over I²C, ideal for touch buttons, sliders, wheels, and proximity sensing applications.

Hardware features:

• 12 capacitive sensing channels
• 16-pin header (power, I²C SDA/SCL, interrupt, and sensor inputs)
• On-board 3.3 V voltage regulator (compatible with 5 V Arduino systems)
• Status LED for power and activity indication
• I²C address selection via solder jumper (address changed by desoldering)
• Interrupt (INT) output for responsive, low-power touch detection
• Fully compatible with Arduino, ESP32, ESP8266, and other microcontroller platforms.

The AD7147-1 is a powerful capacitive touch controller, widely used in commercial products—but difficult to prototype with due to its fine-pitch package and supporting circuitry requirements.

This breakout board was designed to make capacitive touch prototyping fast, reliable, and accessible:

No fine-pitch soldering

No external voltage regulator required

Clean reference layout for stable sensing

It’s built for makers, hardware developers, and creative technologists who want professional-grade capacitive sensing in custom interfaces.

What makes it special?

• Industrial-grade capacitive sensing in a maker-friendly breakout
• Supports touch buttons, sliders, wheels, and proximity sensors
• Reliable sensing with custom electrodes (PCB pads, copper tape, foil, fabric)
• Selectable I²C address allows multiple boards on one bus
• Ideal for minimalist and invisible user interfaces

Example applications

• Capacitive MIDI controllers and musical instruments
• Custom keyboards, macro pads, and control surfaces
• Touch-based game controllers
• Smart home touch panels
• Interactive art installations
• Proximity-activated devices and experiments

Documentation

Official Analog Devices AD7147-1 datasheet and documentation: 👉 https://www.analog.com/en/products/ad7147-1.html

Feel free to reach out if you have any questions!