{"product_id":"adafruit-5199-nrf52840-usb-key-with-tinyuf2-bootloader-bluetooth-low-energy-mdbt50q-rx","title":"Adafruit 5199 nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy - MDBT50Q-RX","description":"\u003cmeta name=\"description\" content=\"Buy Adafruit 5199 nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy - MDBT50Q-RX online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eAdafruit 5199 nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy - MDBT50Q-RX\u003c\/h1\u003e\n\n\u003cp\u003eThe Adafruit 5199 is a compact nRF52840-based microcontroller development board featuring integrated Bluetooth Low Energy connectivity, designed for IoT applications, wearables, and wireless sensor networks. Professional embedded systems engineers and IoT developers use this board to rapidly prototype BLE-enabled devices with minimal external components and simplified firmware deployment. This product solves the challenge of creating low-power wireless applications by combining a powerful ARM Cortex-M4 processor with built-in BLE radio and drag-and-drop firmware programming via the TinyUF2 bootloader.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe Adafruit 5199 nRF52840 USB Key is built around the Nordic nRF52840 System-on-Chip, which integrates a 64 MHz ARM Cortex-M4 processor with 256 KB RAM and 1 MB flash memory. The TinyUF2 bootloader enables seamless firmware updates through a standard USB connection without requiring external programmers or JTAG interfaces. Simply connect the device to any computer, and it appears as a USB mass storage device where you can drag-and-drop compiled firmware files (.uf2 format) for instant programming. The nRF52840 operates at 3.3V with ultra-low power consumption, making it ideal for battery-powered applications that require months or years of operation on a single charge.\u003c\/p\u003e\n\n\u003cp\u003eThe board features a compact USB-A form factor that allows direct connection to computer USB ports or USB hubs, eliminating the need for external cables or adapters. The integrated Bluetooth 5.0 radio supports both BLE peripheral and central modes, enabling communication with smartphones, tablets, and other wireless devices. Hardware-accelerated cryptographic functions provide secure BLE connections with AES-128 encryption support. The device includes 32 GPIO pins accessible through castellated edges, allowing integration into custom PCBs or breadboard prototyping. Native support for Arduino IDE, CircuitPython, and MicroPython provides flexible programming options for developers of varying skill levels.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eBluetooth Low Energy USB Microcontroller Development Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAdafruit Industries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor\u003c\/td\u003e\n\u003ctd\u003eNordic nRF52840 ARM Cortex-M4 64 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAM\u003c\/td\u003e\n\u003ctd\u003e256 KB SRAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlash Memory\u003c\/td\u003e\n\u003ctd\u003e1 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless Technology\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.0 Low Energy with 2.4 GHz antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V USB powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGPIO Pins\u003c\/td\u003e\n\u003ctd\u003e32 pins with castellated edges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBootloader\u003c\/td\u003e\n\u003ctd\u003eTinyUF2 with drag-and-drop programming\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming Interfaces\u003c\/td\u003e\n\u003ctd\u003eUSB, Arduino IDE, CircuitPython, MicroPython\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eCompact USB key form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eNordic nRF52840 ARM Cortex-M4 processor running at 64 MHz with 256 KB RAM and 1 MB flash for complex BLE applications and real-time processing tasks\u003c\/li\u003e\n\u003cli\u003eTinyUF2 bootloader enables drag-and-drop firmware programming directly from Windows, macOS, or Linux without external programmers or JTAG adapters\u003c\/li\u003e\n\u003cli\u003eIntegrated Bluetooth 5.0 Low Energy radio supporting both peripheral and central modes with hardware-accelerated AES-128 encryption for secure wireless communication\u003c\/li\u003e\n\u003cli\u003eUSB-A form factor allows direct connection to computer ports or USB hubs, eliminating cable requirements and enabling portable development\u003c\/li\u003e\n\u003cli\u003e32 accessible GPIO pins with castellated edges for seamless integration into custom PCBs, breadboards, and prototyping platforms\u003c\/li\u003e\n\u003cli\u003eMulti-language support including Arduino IDE, CircuitPython, and MicroPython for flexible firmware development across different programming paradigms\u003c\/li\u003e\n\u003cli\u003eUltra-low power consumption with sleep modes extending battery life to months or years for wearable and IoT applications\u003c\/li\u003e\n\u003cli\u003eHardware cryptographic acceleration providing fast and secure BLE pairing and data encryption without software overhead\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eWearable fitness trackers and health monitoring devices using BLE to transmit heart rate, steps, and biometric data to smartphone applications\u003c\/li\u003e\n\u003cli\u003eSmart home IoT sensors for temperature, humidity, and air quality monitoring with wireless connectivity to central hubs or cloud platforms\u003c\/li\u003e\n\u003cli\u003eWireless beacon and proximity detection systems for indoor positioning, asset tracking, and location-based services in retail and industrial environments\u003c\/li\u003e\n\u003cli\u003eCustom Bluetooth accessories including wireless controllers, remote controls, and input devices for consumer electronics and gaming applications\u003c\/li\u003e\n\u003cli\u003eIndustrial IoT data loggers and sensor nodes for remote monitoring of machinery, environmental conditions, and equipment performance with battery-powered operation\u003c\/li\u003e\n\u003cli\u003eEducational robotics and embedded systems projects where students require hands-on experience with wireless communication and microcontroller programming\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eGetting started with the Adafruit 5199 is straightforward thanks to the TinyUF2 bootloader. First, connect the USB key directly to your computer's USB port or hub. The device automatically appears as a USB mass storage drive named FTHR840BOOT. Download the compiled firmware file in .uf2 format from the Adafruit GitHub repository or compile your own sketch using the Arduino IDE with the Adafruit nRF52840 board package installed. Simply drag and drop the .uf2 file onto the FTHR840BOOT drive, and the bootloader automatically programs the flash memory and reboots the device with your new firmware.\u003c\/p\u003e\n\n\u003cp\u003eFor development, install the Arduino IDE and add the Adafruit nRF52840 board package through the Boards Manager. Select the Adafruit Feather nRF52840 as your target board, choose the appropriate COM port, and write your BLE application code using the Arduino framework or CircuitPython. The nRF52840 provides extensive BLE libraries including Bluefruit LE for simplified peripheral and central development. For power-sensitive applications, leverage the built-in sleep modes and peripheral event system to minimize current consumption. Use a USB power meter or ammeter to measure actual current draw during development and optimize your firmware accordingly. The castellated GPIO edges allow direct soldering to custom PCBs for permanent integration into finished products.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the Adafruit 5199 support both BLE peripheral and central modes?\u003c\/summary\u003e\n\u003cp\u003eYes, the nRF52840 chipset fully supports both BLE peripheral and central modes. This means you can use the board to act as a BLE device that connects to smartphones and tablets, or as a central device that scans for and connects to other BLE peripherals. The Bluefruit LE library provides high-level functions for implementing both modes with minimal code complexity.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat programming languages are supported on the Adafruit 5199?\u003c\/summary\u003e\n\u003cp\u003eThe board supports multiple programming environments including Arduino IDE with C\/C++, CircuitPython for Python-based development, and MicroPython for lightweight Python implementations. Arduino IDE is recommended for beginners and provides the most extensive library support. CircuitPython offers rapid prototyping with interactive REPL access, while MicroPython provides a balance between performance and ease of use.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use the Adafruit 5199 for battery-powered applications?\u003c\/summary\u003e\n\u003cp\u003eAbsolutely. The nRF52840 is specifically designed for ultra-low power operation with multiple sleep modes that reduce current consumption to microamps. By implementing proper power management techniques including peripheral event system usage, interrupt-driven design, and sleep mode optimization, you can achieve months or even years of battery life depending on your application requirements and usage patterns.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs an external programmer or JTAG adapter required for firmware updates?\u003c\/summary\u003e\n\u003cp\u003eNo, the TinyUF2 bootloader eliminates the need for external programmers. Simply connect the USB key to your computer, and it appears as a mass storage device. Drag and drop your compiled .uf2 firmware file onto the drive, and the bootloader automatically programs the flash memory without any additional tools or adapters.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum range of the Bluetooth 5.0 radio?\u003c\/summary\u003e\n\u003cp\u003eBluetooth 5.0 can achieve ranges up to 240 meters in ideal line-of-sight conditions with appropriate antenna design and transmit power settings. In typical indoor environments with obstacles, expect practical ranges of 30-100 meters depending on walls, interference, and transmit power configuration. The nRF52840 supports adjustable transmit power from -40 dBm to +8 dBm for range and power consumption optimization.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Tech Depot\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy Adafruit 5199 nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy - MDBT50Q-RX Online in India\u003c\/h2\u003e\n\n\u003cp\u003ePurchase the Adafruit 5199 nRF52840 USB Key with T\u003c\/p\u003e","brand":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48743802110209,"sku":"TES-EV02904","price":1823.2,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/5199-00-228x228.jpg?v=1778063175","url":"https:\/\/techdepot.in\/products\/adafruit-5199-nrf52840-usb-key-with-tinyuf2-bootloader-bluetooth-low-energy-mdbt50q-rx","provider":"Tech Depot India","version":"1.0","type":"link"}