Thunderboard™ BG22 Kit


Thunderboard BG22 is a small form-factor, optimized development platform for adding Bluetooth connectivity to battery-powered IoT products. 

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Hands-On Virtual Bluetooth Workshop: Develop a Secure IoT Device on a Thunderboard Kit

Get Connected: Develop and deploy more powerful, efficient, and secure IoT products with the all new EFR32BG22. This interactive workshop features hands-on technical training and 1:1 support from the comfort of your own home.

Thunderboard BG22 Features

Small Form Factor Thunderboard

  • EXP compatible breakouts

Target device

  • EFR32BG22
    • Secure Bluetooth 5.2 SoCs for high-volume products
    • 76.8 MHz, ARM Cortex-M33 with 512 kB of flash and 32 kB RAM
    • Bluetooth 5.2 Radio with supported for direction finding and LE coded PHY
  • 38.4 MHz HFXO crystal
  • 32.768 kHz LFXO crystal
  • 2.4 GHz matching network and chip antenna

On-board Board controller

  • J-Link debugger
    • SWD physical layer
  • Packet trace over UART/async protocol
  • Virtual COM with hardware flow control

USB Micro-B connector for debug connection

User interface features:

  • 1x button (with EM2 wake-up)
  • 1x LED

Data storage / OTA support

  • 8 Mbit SPI flash

Power save features

  • Controllable and separate power domain(s) for sensors

Mobile app for Android and iOS

  • View sensor data, control LEDs and detect button pushes
  • iOS app implemented in swift
  • Android app implemented in native code
  • Source code available at GitHub


Mini Simplicity Debug Connector (SLSDA001A compatible) with access to:

  • AEM
  • PTI
  • VCOM
  • SWD


Unboxing the Thunderboard BG22

Step by step instructions on how to get started with the Thunderboard IoT development Kit and install the app.

Thunderboard BG22 Resources

Thunderboard BG22 Kit User's Guide

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iOS App Source Code

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Android App Source Code

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