{"product_id":"seeed-studio-xiao-nrf52840-bluetooth-development-board","title":"Seeed Studio XIAO nRF52840 Bluetooth Development Board","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe \u003cstrong\u003eSeeed Studio XIAO nRF52840\u003c\/strong\u003e is an ultra-compact, high-performance Bluetooth development board designed for space-constrained IoT and wearable projects. Powered by the powerful Nordic nRF52840 ARM Cortex-M4F processor, this thumb-sized microcontroller features built-in \u003cstrong\u003eBluetooth 5.0 \/ BLE (Bluetooth Low Energy)\u003c\/strong\u003e connectivity and an integrated onboard antenna. What makes the XIAO nRF52840 truly stand out is its ultra-low power consumption and built-in battery charging chip (BQ25101), making it exceptionally well-suited for untethered, battery-powered remote nodes.\u003c\/p\u003e\n\n\u003cp\u003eDespite its tiny footprint, it brings a rich set of interfaces to your fingertips, including 11 digital I\/O pins, 6 analog inputs, and standard I2C, SPI, and UART ports. It is fully compatible with Arduino, MicroPython, and CircuitPython, giving developers the flexibility to program in their preferred environment while prototyping TinyML algorithms or smart home devices.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePeople also search for:\u003c\/strong\u003e seeed xiao nrf52840, tiny ble board, wearable bluetooth module, nrf52840 development board, small arduino bluetooth, ble micro python board.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrocontroller:\u003c\/strong\u003e Nordic nRF52840 ARM Cortex-M4F (up to 64 MHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMemory:\u003c\/strong\u003e 1MB Flash \/ 256KB RAM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless Connectivity:\u003c\/strong\u003e Bluetooth 5.0 \/ Bluetooth Low Energy (BLE)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3V (Logic level)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 5V via USB Type-C or 3.7V LiPo battery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Management:\u003c\/strong\u003e Built-in BQ25101 chip supporting charge management for 3.7V Lithium batteries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Pins:\u003c\/strong\u003e 11x Digital, 6x Analog (PWM available on 11 pins)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterfaces:\u003c\/strong\u003e 1x UART, 1x I2C, 1x SPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 21 x 17.5 mm (Thumb-sized)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgramming Interfaces:\u003c\/strong\u003e Arduino IDE, MicroPython, CircuitPython\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch5\u003eApplications\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWearable Electronics:\u003c\/strong\u003e Its tiny size and integrated battery management make it perfect for smartwatches or fitness trackers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT Sensor Nodes:\u003c\/strong\u003e Building low-power wireless sensor networks for smart home automation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTinyML Projects:\u003c\/strong\u003e Running lightweight machine learning models (like voice or gesture recognition) directly on the edge device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Peripherals:\u003c\/strong\u003e Creating custom Bluetooth HID devices like wireless keyboards or gaming controllers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch5\u003eFrequently Asked Questions (FAQ)\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I connect 5V sensors directly to the I\/O pins?\u003c\/strong\u003e\u003cbr\u003e\nA: No, the XIAO nRF52840 operates strictly on 3.3V logic. Connecting 5V signals directly to the pins will permanently damage the microcontroller. Use a logic level converter for 5V sensors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I power this board with a battery?\u003c\/strong\u003e\u003cbr\u003e\nA: The bottom of the board features tiny solder pads (BAT+ and BAT-) designed for a 3.7V Lithium Polymer (LiPo) battery. The onboard BQ25101 chip will automatically charge the battery when connected via USB-C.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: My computer doesn't recognize the board. How do I fix this?\u003c\/strong\u003e\u003cbr\u003e\nA: You likely need to put the board into bootloader mode. Simply use a pair of tweezers or a jumper wire to quickly double-tap the two tiny reset pads located next to the USB port. The board should then appear as a mass storage device.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is there an onboard antenna?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, this standard version features a built-in Bluetooth antenna, saving space while providing a reliable connection for close-to-medium-range projects.\u003c\/p\u003e\n\n\u003ch5\u003ePackage Includes\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Seeed Studio XIAO nRF52840 Board\u003c\/li\u003e\n\u003cli\u003e2 × 7-Pin Header Strips (Unsoldered)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tomson Electronics ","offers":[{"title":"Default Title","offer_id":48266938482926,"sku":"DBS-29133","price":1999.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2132\/9029\/files\/seeed-studio-xiao-nrf52840-45font-logo.jpg?v=1783433468","url":"https:\/\/www.tomsonelectronics.com\/products\/seeed-studio-xiao-nrf52840-bluetooth-development-board","provider":"Tomson Electronics ","version":"1.0","type":"link"}