 Hello and welcome to this presentation of the STM32L4R9i Discovery Kit. It covers the main features of this Discovery board, which is dedicated to the STM32L4 Plus series. The demos included with the Discovery Kit will enable you to become more familiar with this new high-performance low-power microcontroller. The STM32L4R9i Discovery Kit enables users to easily prototype applications with state-of-the-art energy efficiency, as well as stunning audio and graphics rendering with direct support for the AMOLED DSI round display. The Discovery Kit also embeds a high-precision Ammeter for measuring the current consumption of the STM32L4R9Ai microcontroller in run and low-power modes and a debugger that helps you develop your own applications from the existing examples. The STM32L4R9AiI6 microcontroller, or MCU, features an ARM Cortex-M4 core running at up to 120 MHz, 2 megabytes of flash memory, 640 kilobytes of RAM, and graphics performance with the Chromart accelerator. It also features a rich set of peripherals, including the Mipi DSI interface, which enables display connection, and USB on-the-go, which enables direct connection with other USB devices without the need for a host computer. Some other hardware highlights from the Discovery board include a high-precision current Ammeter with four ranges and auto calibration, a 1.2-inch AMOLED round display with capacitive touch panel capabilities to navigate through the demonstration menu, a 16-megabit asynchronous PS RAM and 512 megabytes of OctoSPI flash memory to store large data arrays or program code, an ST MEMS-based digital microphone, an SAI audio codec with a stereo headset jack, including analog microphone input, a four-direction joystick to navigate through the demonstration menus, and an embedded ST-Link v2-1 debugger programmer for connecting your favorite development tools. The board incorporates three distinct STM32 devices, the target, the debugger, and the MCU use to measure the current. This is the STM32-L4R9i Discovery board. The front side is covered by the LCD display with two MEMS microphones on the side. The board offers a wide range of connectors for display, camera, memory card, ST-MOD+, P-MOD, and other USB peripherals. The backside offers a wide range of connectors. A stereo headphone or stereo headset can be plugged into the 3.5-millimeter standard jack connector. The Arduino connectivity support provides unlimited expansion capabilities with a large choice of specialized add-on boards. This board enables us to demonstrate the STM32-L4R9i performance and versatility thanks to its large peripheral set. The STM32-L4R9i Discovery kit embeds two additional boards, a 1.2-inch 390 x 390-pixel AMOLED round display panel with 16 million color depth with MIPI DSi interface and capacitive touch panel, enabling the demonstration of the board's graphic capabilities and the navigation of the demonstration menu. The wide range of connectors is extended with an ST-MOD+, fan outboard, allowing connection to peripherals compatible with Microelectronica Microbus Clickboard with two 1x8 pin female connectors, CN10 and CN11, ESPN01 with 2x4 pin female connector, CN4, Seed Studio Grove with two 2x4 pin male connectors, CN2 and CN3 and reserve standard 2.5-millimeter pitch of STMOD+, pin header for breadboard. The Discovery kit has flexible power supply options with five possible sources. It can be powered via USB in one of the following configurations. Plug a micro USB cable on CN13 and set the J4 jumper to 5 volts STLK. Plug in a micro USB cable on CN9 and set the JP14 jumper to 5 volts UV5. Plug in a 5 volt DC power charger on CN13 and set the JP4 jumper to 5 volts CHGR. It can also be supplied externally if the JP4 jumper is set to ARD and supplying through SV Arduino connector CN16. Pins 2 and 3 of JP5 must be connected to get 5 volts power from Arduino. Or the JP4 jumper is set to ESV and supplying a 6 to 9 volt DC power on the CN16 Arduino connector pin named VIN. Now let's have a look at the demos included in the STM32 L4R9i Discovery kit. The demonstration software is preloaded in the OctoSPI flash memory. The latest versions of the demonstration source code and associated documentation can be downloaded from www.st.com.stm32l4-discovery. Now let's run the various applications by touching the display screen to enable navigation through the demonstration menus. Three demonstrations can be selected from the menu launcher to evaluate watch, audio player, activity trackers, and power measurement applications. STM-WIN developed by ST Microelectronics, touch GFX developed by Dropner Graphics AS, and Embedded Wizard developed by TARA Systems. You can browse STM-WIN demonstration firmware through menus and submenus. The watch application shows the clock phase. The audio player plays any WAV file stored in the microSD card. The audio recorder application uses MEMS digital microphones to store audio. The power measurement application enables the user to measure the STM32 L4R9i MCU power consumption. And finally, the system information menu allows the user to display various types of information about the board. You can browse touch GFS demonstration firmware through menus and submenus. The audio player application plays any WAV file stored in the microSD card. The Game 2D application uses STM32 L4R9 AII6 graphics capabilities and highlights core usage with and without the Chromart accelerator enabled. The watch application shows watch widgets with several clock faces. The power measurement application enables the user to select the power mode and measure the STM32 L4R9 AI MCU power consumption. And the activity tracking application is for monitoring and tracking metrics such as activity time, distance, calorie consumption or heartbeat. Walk, run, bicycle and swim activities can be selected through submenus. The back button menu allows you to go back to the menu launcher. You can browse embedded wizard demonstration firmware through the main menu and submenus. The running application is for monitoring and tracking metrics such as activity time, speed, distance walked or run, heartbeat and tracker position. The watch application demonstrates watch widgets with several clock faces. And the back button menu allows you to go back to the menu launcher. For more information on the Low Power STM32 L4R9 AI Discovery Kit, please go to www.st.com.stm32l4-discovery. You can also watch our videos on our YouTube ST channel.