FREE Standard Delivery for orders over £50 (ex VAT)

Raspberry Pi, Arduino & ESP32
Development Boards

Designed & Manufactured in the UK

Analogue inputs, digital I/O, real-time clocks, serial interfaces and more. On a Raspberry Pi, each board stacks onto the 40-pin header, and onto the next, turning a bare Pi into a measuring instrument or a controller. Most of the range talks over I²C, so the same boards also connect to an Arduino, ESP32 or Raspberry Pi Pico with just four wires.

Program them with our Arduino libraries, or use ESPHome to bring sensors, inputs and relays straight into Home Assistant. They also work with other single board computers, including the Orange Pi, Asus Tinker Board, Odroid and Radxa.

Build Your Stack →

Choose Your Function

ADC (Analogue)

Convert real-world sensor data into digital values.

More info →

GPIO (Digital I/O)

Expand your digital input and output capabilities.

More info →

Serial (RS232/RS485)

Connect to machinery, remote sensors and legacy devices.

More info →

Breakout Development Boards

Breakout Boards

These versatile prototyping boards are ideal for building projects or testing ideas.

Shop Breakout Boards →
Need help and support?

Have a Question?

Visit the Knowledge Base for Raspberry Pi, Arduino and ESP32 tutorials and Articles

Get Help and Support →

Worldwide Shipping

Worldwide shipping on all our boards and accessories

Stackable Design

Stack multiple development boards on your Raspberry Pi

Software Libraries

We support C, C++, Python, .Net Core, Arduino and many more