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Nordic nRF52 Development Kit and Raspberry Pi 3 Ready-to-Go Kit Quick Start Guide

Updated: May 15

This kit includes a Nordic nRF52 and Raspberry Pi 3 board. You will be connecting the Nordic nRF52 to the Raspberry Pi via Bluetooth and the Raspberry Pi will send data from the Nordic nRF52 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.

The Nordic nRF52 board is flashed with a Heart Rate Monitoring Demo and mimics a heart rate monitor, sending a generated RPM every couple of seconds.  Please note that this is not a real heart rate monitor.


In this Quick Start Guide, you will:

  1. Set up your Nordic nRF52

  2. Set up your Raspberry Pi

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

  4. Build a workflow to notify you when your heart rate is above a certain level


Here’s what you need to get started:

  1. Nordic nRF52 Development Kit 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 Nordic nRF52 and Raspberry Pi 3

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 one of the USB Mini’s in your Kit and connecting it to a power source. 


Wait two minutes for the Pi to finishing booting up.


Now, power on your Nordic nRF52 by plugging it in via USB mini port.

The green light under LED 1 should stay lit.  It may blink a few times while it is looking for something to pair with.  If it keeps blinking and does not stay solid, make sure your Raspberry Pi is still on.  Congratulations!  Your device is connected.

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 Nordic nRF52 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 bluetooth Nordic nRF52 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!

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