The Adafruit LED Arcade Button 1×4 QT I2C Breakout lets you connect up to four illuminated arcade buttons to any microcontroller over I2C. A built-in seesaw microcontroller handles button press detection and LED PWM control, so you don't need to dedicate GPIO pins or set up PWM outputs — just plug in via STEMMA QT / Qwiic and go.

Each of the eight JST XH sockets connects to an arcade button's switch and LED via quick-connect cables. An onboard boost converter ensures LEDs light up brightly at 5V even when your microcontroller runs at 3.3V. Chain multiple boards via I2C — with four address jumpers, up to 16 boards (64 buttons) can share a single bus.

Key Features

• 4× Arcade Button Connections – 8× JST XH sockets for switch and LED quick-connect cables
• Seesaw I2C Interface – Onboard microcontroller handles button reads and LED PWM over I2C
• STEMMA QT / Qwiic Connectors – Solderless I2C connection with daisy-chain support
• Onboard 5V Boost Converter – Drives LED illuminators brightly even from 3.3V systems
• Up to 16 Boards Per Bus – Four I2C address jumpers for massive button arrays (up to 64 buttons)
• Breadboard Compatible – Two rows of 0.1" breakout pads on each side
• 3.3V & 5V Logic Compatible – Works with any I2C microcontroller

Ideal For

• Custom arcade control panels and fight sticks
• Interactive button walls and museum exhibits
• Game controllers and quiz buzzers
• LED-illuminated control interfaces

Package Contents

• 1× Adafruit LED Arcade Button 1×4 QT I2C Breakout (assembled and programmed)

Resources

• Adafruit LED Arcade Button QT Guide
• Arduino Seesaw Library (GitHub)
• CircuitPython Seesaw Library (GitHub)