 Welcome to this explainer video on the STM32 Nucleo Motor Control Expansion Board using Arm Embed Environment. This expansion board enables you to drive one low-voltage stepper motor and is intended for applications like 3D printing. We are going to explain how to get your application running in the Arm Embed Environment. The first half of the video will focus on the software setup and the second half will detail the hardware functionality available. Now connect the stepper motor to the expansion board. Then connect a low-voltage supply. In this case, we use a 12-volt battery. Then you can connect the STM32 Nucleo Board to a PC using a mini USB cable. And then you are ready to power on. The board is automatically detected and seen as a disk drive. Now connect to the armdeveloper.embed.org website and log in with your credentials. Click on Hardware, then Components and select Motor under the actuators category. Click on X-Nucleo IHM01A1 stepper motor driver and find the Hello World IHM01A1 application example on the next page. Then import it into the online compiler. Open the main program and choose the desired target platform. Add a new one if needed. At this point, build the application and download it on the Nucleo Board. After completing download or when pressing the black button on the Nucleo Board, the application will reset and start. This simple application shows how to run a stepper motor forward and backward, setting the torque regulation current, storing the current position as a reference, home position and returning to it, and playing with the micro steps and the speed. And now some details about the STM32 Nucleo Stepper Motor Expansion Board. It includes a fully integrated microstepping motor driver, the L6474, and can actually be stacked up to three times to drive three stepper motors with a single STM32 Nucleo Board. At www.st.com-x-nucleo, under the reference XNUCLEO IHM01A1, you can find user manuals, quick start guides, bill of materials and lots of other detailed documentation to help you on your way to building your application. Thanks for taking the time to watch our video. We hope it helps you get well on the way to your dream application.