{"product_id":"adafruit-4481-itsybitsy-nrf52840-express-bluetooth-le","title":"Adafruit 4481 ItsyBitsy nRF52840 Express - Bluetooth LE","description":"\u003cmeta name=\"description\" content=\"Buy Adafruit 4481 ItsyBitsy nRF52840 Express - Bluetooth LE online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eAdafruit 4481 ItsyBitsy nRF52840 Express - Bluetooth LE\u003c\/h1\u003e\n\n\u003cp\u003eThe Adafruit ItsyBitsy nRF52840 Express is a compact, powerful microcontroller board featuring the Nordic nRF52840 SoC with integrated Bluetooth 5.0 LE connectivity, delivering professional-grade wireless capabilities in a miniature form factor measuring just 36.8mm x 17.78mm. IoT developers, embedded systems engineers, and hardware makers use this board to rapidly prototype wireless applications including fitness trackers, smart home devices, beacon systems, and real-time sensor networks that require low-power Bluetooth communication. This board solves the critical challenge of integrating wireless connectivity into space-constrained projects while maintaining exceptional processing power and energy efficiency through its ARM Cortex-M4F processor running at 64 MHz with hardware floating-point support.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe Adafruit ItsyBitsy nRF52840 Express combines the Nordic Semiconductor nRF52840 SoC with CircuitPython and Arduino IDE compatibility, enabling developers to leverage Bluetooth 5.0 LE for extended range communication up to 240 meters in open space. The board integrates 1MB of flash memory and 256KB of RAM, providing substantial headroom for complex wireless applications and sensor data processing. The nRF52840 architecture includes a dedicated 2.4GHz radio transceiver with integrated power amplifier, delivering superior range and reliability compared to external Bluetooth modules. Built-in support for multiple wireless protocols including Bluetooth LE, NFC, and Thread makes this board exceptionally versatile for next-generation IoT deployments.\u003c\/p\u003e\n\n\u003cp\u003eWhat distinguishes the ItsyBitsy nRF52840 is its exceptional power efficiency, achieving sub-microamp sleep currents through sophisticated power management features and multiple low-power modes. The board includes a built-in lithium polymer battery charger with USB-C connectivity, making it ideal for wearable and portable applications. Native support for CircuitPython provides rapid prototyping capabilities with Pythonic syntax, while Arduino IDE compatibility ensures access to extensive community libraries. The integrated debugger and programmer eliminate the need for external tools, streamlining development workflows from concept to production-ready firmware.\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\u003eMicrocontroller Board with Bluetooth 5.0 LE\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\u003eARM Cortex-M4F @ 64 MHz with FPU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlash Memory\u003c\/td\u003e\n\u003ctd\u003e1MB (1024KB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRAM\u003c\/td\u003e\n\u003ctd\u003e256KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless Protocol\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.0 LE, NFC, Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRadio Range\u003c\/td\u003e\n\u003ctd\u003e240 meters (open space)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e36.8mm x 17.78mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Interface\u003c\/td\u003e\n\u003ctd\u003eUSB-C with integrated charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGPIO Pins\u003c\/td\u003e\n\u003ctd\u003e21 digital I\/O pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC Channels\u003c\/td\u003e\n\u003ctd\u003e8 analog inputs (12-bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSleep Current\u003c\/td\u003e\n\u003ctd\u003eSub-microamp in deep sleep\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 SoC with integrated 2.4GHz radio transceiver delivering 240-meter Bluetooth 5.0 LE range with superior link budget and interference resilience\u003c\/li\u003e\n\u003cli\u003eARM Cortex-M4F processor at 64 MHz with hardware floating-point unit enabling real-time signal processing and complex mathematical operations without performance degradation\u003c\/li\u003e\n\u003cli\u003e1MB flash and 256KB RAM providing ample storage for sophisticated wireless applications, sensor fusion algorithms, and over-the-air firmware updates\u003c\/li\u003e\n\u003cli\u003eNative CircuitPython and Arduino IDE support with integrated debugger eliminating external programmer requirements and accelerating development cycles\u003c\/li\u003e\n\u003cli\u003eBuilt-in lithium polymer battery charger with USB-C connectivity enabling seamless integration into wearable and portable IoT devices\u003c\/li\u003e\n\u003cli\u003eSub-microamp sleep current with multiple power modes delivering exceptional battery life for coin-cell and small battery-powered applications\u003c\/li\u003e\n\u003cli\u003e21 digital I\/O pins and 8 analog inputs supporting diverse sensor interfaces including I2C, SPI, UART, and PWM\u003c\/li\u003e\n\u003cli\u003eNFC and Thread protocol support enabling multi-protocol IoT deployments and enhanced interoperability with smart home ecosystems\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 utilizing Bluetooth LE for real-time biometric data transmission to smartphones with extended battery life through low-power operation\u003c\/li\u003e\n\u003cli\u003eSmart home sensor networks including environmental monitoring, occupancy detection, and device control with mesh networking capabilities via Thread protocol\u003c\/li\u003e\n\u003cli\u003eBeacon and proximity systems leveraging Bluetooth 5.0 extended range for indoor positioning, asset tracking, and location-based services in retail and industrial environments\u003c\/li\u003e\n\u003cli\u003eIoT data loggers and remote sensing applications combining onboard analog inputs with wireless connectivity for distributed environmental monitoring and agricultural automation\u003c\/li\u003e\n\u003cli\u003eBluetooth peripheral prototyping for custom input devices, gaming controllers, and human-machine interfaces requiring rapid iteration and low-cost development\u003c\/li\u003e\n\u003cli\u003eNFC-enabled access control and authentication systems integrating near-field communication with Bluetooth for hybrid connectivity solutions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eBegin by connecting the ItsyBitsy nRF52840 to your development computer via USB-C cable. Install the Arduino IDE or use the web-based Adafruit CircuitPython editor, then download the appropriate bootloader and CircuitPython firmware from Adafruit's official repository. The board enters bootloader mode automatically when connected, allowing drag-and-drop firmware installation. Configure your development environment by installing the nRF52840 board support package and necessary libraries for Bluetooth LE communication, which Adafruit provides with comprehensive documentation and example sketches demonstrating BLE peripheral and central configurations.\u003c\/p\u003e\n\n\u003cp\u003eFor Bluetooth LE applications, initialize the radio stack using the provided libraries, define your GATT services and characteristics matching your application requirements, then implement event handlers for connection, disconnection, and characteristic read\/write operations. Leverage the board's low-power capabilities by configuring sleep modes between Bluetooth advertisements and connection events, significantly extending battery life in portable applications. Utilize the integrated debugger for real-time code execution monitoring and breakpoint debugging, enabling rapid identification and resolution of wireless communication issues. The comprehensive Adafruit learning guides provide step-by-step tutorials for common use cases including heart rate monitors, environmental sensors, and custom BLE devices.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between Bluetooth 5.0 LE and earlier Bluetooth versions on this board?\u003c\/summary\u003e\n\u003cp\u003eBluetooth 5.0 LE on the nRF52840 delivers four times the range of Bluetooth 4.2, reaching 240 meters in open space compared to 60 meters previously. The extended range is achieved through improved link budget, higher transmit power options, and advanced antenna designs. Additionally, Bluetooth 5.0 supports higher data rates up to 2 Mbps, enabling faster data transfer while maintaining backward compatibility with Bluetooth 4.2 devices. The nRF52840's implementation includes adaptive frequency hopping and interference mitigation, ensuring reliable communication in crowded 2.4GHz environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this board for battery-powered applications?\u003c\/summary\u003e\n\u003cp\u003eYes, the ItsyBitsy nRF52840 is specifically optimized for battery-powered applications. The board achieves sub-microamp sleep currents through sophisticated power management and multiple low-power modes, enabling months or years of operation on coin-cell batteries depending on usage patterns. The integrated lithium polymer battery charger with USB-C connectivity simplifies integration into wearable devices. By implementing proper sleep scheduling and optimizing Bluetooth advertisement intervals, developers can achieve exceptional battery life. Adafruit provides detailed power consumption specifications and optimization guidelines for various application scenarios.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this board compatible with Arduino IDE?\u003c\/summary\u003e\n\u003cp\u003eYes, the ItsyBitsy nRF52840 has full Arduino IDE compatibility through Adafruit's nRF52840 board support package. After installing the board definition in Arduino IDE, you can program the board using familiar Arduino syntax and access extensive community libraries. The board also supports CircuitPython, which many developers prefer for rapid prototyping due to its Pythonic syntax and interactive REPL environment. Both development environments coexist on the board, allowing you to switch between Arduino and CircuitPython based on project requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat wireless protocols does this board support?\u003c\/summary\u003e\n\u003cp\u003eThe nRF52840 SoC supports multiple wireless protocols including Bluetooth 5.0 LE, Bluetooth Mesh, NFC (near-field communication), and Thread. This multi-protocol capability enables sophisticated IoT deployments where devices need to communicate using different standards. For example, a device could advertise over Bluetooth LE to smartphones while simultaneously participating in a Thread mesh network for home automation. The board's architecture allows running multiple protocols concurrently, making it exceptionally versatile for next-generation wireless applications.\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 Engineer Store\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 4481 ItsyBit\n\u003ch2\u003eBuy Adafruit 4481 ItsyBitsy nRF52840 Express - Bluetooth LE Online in India\u003c\/h2\u003e\n\u003c\/h2\u003e\u003cp\u003ePurchase the \u003cstrong\u003eAdafruit 4481 ItsyBitsy nRF52840 Express - Bluetooth LE\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43853790314659,"sku":"TES-EV02892","price":3664.42,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/4481-00-228x228.jpg?v=1704192517","url":"https:\/\/www.theengineerstore.in\/te\/products\/adafruit-4481-itsybitsy-nrf52840-express-bluetooth-le","provider":"The Engineer Store","version":"1.0","type":"link"}