Bare Conductive Touch Board



Turn touch into sound, light, or data

Straight out of the box, the Touch Board is pre-programmed to turn any conductive object into a sensor or switch to play sounds stored on the included microSD card. It can be re-programmed via the Arduino IDE so you can customize the function of the 12 capacitive touch and proximity sensors.

Create smart surfaces by connecting pads of Electric Paint or other conductive materials to your Touch Board. Use the Touch Board to bring your ideas to life. Create interactive murals, sophisticated prototypes or playful projects.


12 Electrodes

12 capacitive touch and proximity electrodes.


Completely Level Base

Easily attach it onto any flat surface.


MP3 decoder and MIDI synthesizer

Play MP3 files or simulate a MIDI instrument via speakers or headphones connected to the audio jack.


MicroSD Included

Upload MP3 files onto the supplied microSD card and change it without having to reprogram the Touch Board.


USB Serial, MIDI interface and mouse and keyboard

When plugged into a computer, the Touch Board can act as a USB serial device, USB MIDI interface or as a USB mouse or keyboard. Use the data from the electrodes as an input for software that utilises either serial, MIDI or keyboard strokes.



The Touch Board is a microcontroller board with dedicated capacitive touch and MP3 decoder ICs. It has a headphone socket and micro SD card holder (for file storage), as well as having 12 capacitive touch electrodes. It is based around the ATmega32U4 and runs at 16MHz from 5V. It has a micro USB connector, a JST connector for an external lithium polymer (LiPo) cell, a power switch and a reset button.

It is similar to the Arduino Leonardo board and can be programmed using the Arduino IDE. The ATmega32U4 can appear to a connected computer as a mouse or a keyboard, (HID) serial port (CDC) or USB MIDI device.

For full technical specifications, please refer to the Technical Data Sheet here.


  • Microchip ATmega32U4 microcontroller
  • Audio output 15mW into 32Ω via 3.5mm stereo socket
  • Up to 32GB removable storage via micro SD card
  • 5V DC operating voltage
  • 400mA max. output current, 100mA at startup(5V rail)
  • 12 Capacitive touch electrodes, eight configurable as digital I/O
  • 12 Digital I/O Pins with five additional pins available via modification
  • 7 PWM channels (shared with digital I/O pins)
  • 12 Analogue input channels (shared with digital I/O pins)



  • 1 x Touch Board
  • 1 x microSD card