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Silicon Labs Thunderboard Sense 2 and Raspberry Pi 3 Ready-to-Go Kit Quick Start Guide

Updated: May 15

This Kit includes a Thunderboard Sense 2 and Raspberry Pi 3 board. You will be connecting the Thunderboard to the Raspberry Pi via Bluetooth and the Raspberry Pi will send the data from the Thunderboard to the cloud over Ethernet or WiFi. You then can log in and visualize the data on Medium One, a cloud service we provide with built-in tools you can use with your data.

In this Quick Start Guide, you will:

  1. Set up your Thunderboard

  2. Set up your Raspberry Pi

  3. Set up widgets on your Medium One Dashboard to visualize the data

  4. Build a workflow to alert you when the Thunderboard has moved

Here’s what you need to get started:

  1. Silicon Labs Thunderboard Sense 2 and Raspberry Pi 3 Ready-to-Go Kit [Buy]

Important - Before You Begin

This kit is preprogrammed to connect to our legacy cloud Sandbox account. If you have purchased this kit, we'll need to link you to our new cloud platform. Please ignore the login credentials provided in the kit - the steps below will explain how to get your new credentials.

Step 1: Connect your Raspberry Pi 3 and Thunderboard Sense 2

Find your Micro SD card in your Kit. Plug it into your Raspberry Pi.

Plug in the Ethernet cable. (note: if you want to connect your RPI to the cloud over WiFi instead, please refer to this guide)

Turn on the Raspberry Pi by plugging in a USB Mini and connecting it to a power source. 

Wait two minutes for the Pi to finishing booting up.


Now power on your Thunderboard by plugging it in via a USB Mini. You may or may not see a green light blinking before the red light, signaling that it is trying to find something to pair with.

After about 20 seconds, a red light on the Thunderboard should blink twice every ten seconds. The red light means it has successfully connected to the Raspberry Pi using bluetooth, and the Raspberry Pi has successfully connected to the internet.


If this is not working, please read the section "Important Note" at the bottom of this page.

Step 2. Link your RPI to the new Medium One IoT platform

To link your RPI to the new Medium One IoT Platform, you'll need to send us the login.txt stored on your RPI. We'll send you a new login.txt file and further instructions.


  1. With the RPI plugged in a connected to the Internet, open a Terminal window.

  2. Type "hostname -I" in the Terminal and press enter. This should return the IP address of the RPI.

  3. Type "ssh pi@<IP address>" into the Terminal with the IP address you obtained in the previous step. If it asks for a password, type "raspberry".

  4. Once you have ssh'd into the RPI, obtain the login.txt file located at /m1/login.txt. Email the file or its contents to support@mediumone.com. Please mention that you're using the Nordic nRF52 kit.

  5. We will send you a new login.txt file with further instructions and account login.

Step 3. Visualize the Thunderboard Data

Important: You cannot follow this step until you get your new credentials from Medium One.

Go to this tutorial and follow "Step 5. Set up your Dashboard".

Step 4. Build a Workflow

Important: You cannot follow this step until you get your new credentials from Medium One.

Go to this tutorial and follow "Step 6. Build a Workflow".

Congratulations! You have connected your Thunderboard device to the cloud using Ethernet over a Raspberry Pi 3. 


Want to learn more about what Medium One can do?

Check out our documentation and tutorials & get started on your next IoT project!


Important Note: Boot-up Sequence

The Thunderboard Sense 2 will try and find a device to pair with for about twenty seconds, and then it goes into sleep mode. You can tell if the Thunderboard is looking to pair because a green light on it blinks. Because of this short pairing window, it is important to turn on the Raspberry Pi first, then turn on the Thunderboard. That way, the Raspberry Pi will pair with the Thunderboard right when it turns on. If the Thunderboard is not blinking a green light indicating it is searching, or a red light indicating it is connected to the Raspberry Pi and the cloud, then you should power it off then back on.


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