 and welcome to this video explaining how to get started with the Bluetooth Low Energy STM32 Nucleo Expansion Board. This board is part of the STM32 Open Development Environment, a fast and affordable way to prototype and develop innovative devices and applications with state-of-the-art ST components. Information on how to obtain the board can be found on www.st.com-x-nucleo under the reference x-nucleo IDB04A1. The package includes the board itself and an insert card that provides a first level of information on the main features. The board is built around the ST Blue Energy Bluetooth smart network processor. A balan for signal conversion and a printed antenna at the bottom of the board. The board is equipped with an Arduino Uno R3 connector, allowing it to be plugged into an STM32 Nucleo Development Board. The board is FCC certified and passed the RF test for Japan Radio Law Certification with significant margin. It supports the Bluetooth Low Energy Standard Profiles for both peripheral and central roles and comes with complete middleware to build applications. To start building your prototype, plug the STM32 Nucleo Expansion Board onto an STM32 Nucleo Development Board. Next, connect the STM32 Nucleo Development Board to a PC using a mini USB cable. The board is automatically detected and seen as a disk drive. Visit st.com and search for the keyword x-nucleo IDB04A1. Click on the main part number link. Then, go to the tools and software section and click on the x-cube link. Finally, go to the end of the page and click on the download button in the get software section. When downloaded, just unzip the file in the folder you want. In the software package, you will find directories with all the required material. Now, let's try a sample application that allows you to exchange data between the Bluetooth Low Energy Nucleo Expansion Board and a Bluetooth Low Energy Capable Smartphone. The firmware to be installed is called sensor demo and can be found in the applications folder of the project's directory as shown here. Select the STM32 Nucleo Development Board you are using and drag and drop the binary file onto the Nucleo disk drive. On your smartphone or tablet, install the blue NRG application available on Google Play and the Apple Store. Launch the application and connect to the board. Press the blue button on the STM32 Nucleo Development Board and this makes the cube on the screen move as the information is transferred over the Bluetooth link. A second screen shows simulated environmental data transferred from the expansion board via Bluetooth. The last screen displays the received signal strength indication or RSSI measured at the antenna. The value decreases as we move the board further from the smartphone. Discover more features and software add-ons at st.com slash open software. OSX SmartCon PS is a free and easy-to-use software package to develop applications based on Bluetooth Low Energy Standard Profiles. OSX Blue Voice is a voice-over Bluetooth Low Energy vendor-specific profile library for STM32 and Blue NRG. Blue MicroSystem is a full-featured software development framework that streams real-time data from motion and environmental sensors to a smartphone using Bluetooth Low Energy. Blue Voice Link is another example of vertical application and it uses digital MEMS microphones together with the Bluetooth Low Energy expansion board. A comprehensive set of documentation for the STM32 Nucleo Expansion Board including a user manual, application notes, quick start guide and data sheet is also available. Visit st.com slash stm32ode.