Thunderboard Sense 2

Sense Makes Everything


Silicon Labs' Thunderboard Sense 2 is an excellent starting point to get familiar with the EFR32™ Mighty Gecko 32-bit Wireless SoC. The kit contains sensors and peripherals demonstrating some of the SoC's many capabilities and can serve as a starting point for application development. The Thunderboard Sense 2 features a whopping 7 sensors, four RGB LEDs, an integrated SEGGER J-Link debugger, and MSD programming, which makes it a very full-featured platform for IoT development.

Thunderboard Sense 2 Platform Features

  • EFR32MG12P Mighty Gecko Wireless SoC
    • ARM® Cortex™-M4, up to 40MHz
    • 256kB RAM
    • 1024kB Flash
    • Integrated 2.4GHz radio transceiver
    • Integrated DC/DC converter
    • Integrated CRYPTO engine supporting: AES-128; AES-256; ECC; SHA-1; SHA-2
  • Thunderboard Sense 2 features
    • 20 pin breakout pads for easy access to I/O pins
    • Compact form factor
    • Power sources (USB and CR2032 battery)

  • On-board peripherals
    • 2 user buttons
    • 1 user LED (red/green)
    • 4 user RGB LEDs (individually controllable)
    • Si7021 relative humidity and temperature sensor
    • Si1133 UV index and ambient light sensor
    • BMP280 barometric pressure sensor
    • Si7210 Hall effect sensor
    • CCS811 Indoor air quality gas sensor
    • ICM-20648 6-axis inertial sensor (accelerometer and gyroscope)
    • ICS-43434 MEMS microphone



Updating board firmware

For information on how to update the interface firmware on your board, please see this guide. The interface firmware delivered with the boards is already mbed-compatible, so an upgrade is not strictly required, though it is recommended to check for updates from time to time.

Additional Resources

More information

Learn more about Silicon Labs' Thunderboard Sense 2


Transmission rate: Millions of bits per second
Computational power: Millions of operations per second
Storage: Millions of bytes
Sensors: 11 degrees of freedom

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