MSRP $45.00

EFR32BG22 Thunderboard Kit

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

MSRP $45.00


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

Setting up your Thunderboard BG22 Kit


  • Thunderboard BG22 Kit
  • Coin cell battery or Micro-USB cable (not included)
  • Andriod or iOS mobile phone

Step 1: Unbox Thunderboard BG22

  1. Remove Thunderboard EFR32BG22 from the box.
  2. Supply power to your Thunderboard EFR32BG22: place a battery in the coin cell battery holder on the bottom of the board, or plug in a micro-USB cable.

Step 2: Use Simplicity Connect Mobile App

  1. Download Simplicity Connect mobile app
  2. Enable Bluetooth on your mobile phone

Launch the app and select the Demo tab.

Select one of the demos supported by the default Thunderboard firmware: Blinky, Motion or Environment.
Press the Reset button on the Thunderboard BG22 to restart advertising.  

After selecting the demo you will be prompted with a list of Thunderboard dedvices found within range. Select your board to enter the demo screen. 

Step 3: Try the Sensors

When you have successfully connected the Thunderboard BG22, we are ready to test the board features. 

  • Select the motion and calibrate the board and test the accelerometer and gyroscope.
  • Select "Environment" to test a number of environmental sensors
    • Humidity and Temperature: Blow or cover the temp. sensor with your finger
    • Light: Cover or shine a light on the board
    • Magnetic Field and Door State: Move a magnet near the Hall Effect sensor and observe the effects
    • Motion: Move the board to the other side of the room or building
  • Select "Blinky" to test buttons and LEDs.
    • Switches: Press the push button on the board    
    • Lights: The app switches will turn on/off the small LED on the board     

Developing with your Thunderboard BG22 Kit


  • Thunderboard BG22 Kit
  • Micro-USB cable
  • Simplicity Studio
  • Bluetooth SDK

Step 4: Download and Install Simplicity Studio Version 5

Get up and running quickly with precompiled demos, application notes, and examples. Use advanced tools including energy profiling to optimize your MCU application. Choose your software package below.

Step 5: Plug in Your Kit and Use Simplicity Studio to Install the desired SDKs

After plugging in your kit, launch Simplicity Studio and Open Package Manager in the left upper corner (downward arrow under the menu bar). Select the desired stacks and download them. Visit the package manager regularly for updates.

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