{"product_id":"adafruit-feather-32u4-bluefruit-le","title":"Adafruit Feather 32u4 Bluefruit LE","description":"\u003cp\u003e\u003cem\u003e\u003cstrong\u003eThe Adafruit Feather 32u4 Bluefruit packs Arduino compatibility, Bluetooth® Low Energy, USB, and battery charging into a slim, portable board—perfect for phone-controlled and wireless projects.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u0026lt;\u0026gt;\n\u003cp\u003eFeather is Adafruit’s lightweight development board platform, designed to be thin, portable, and ideal for battery-powered projects. The Adafruit Feather 32u4 Bluefruit combines an Arduino-compatible microcontroller with Bluetooth® Low Energy, built-in USB support, and battery charging—all on a single board that’s ready to go.\u003c\/p\u003e\n\u003cp\u003eAt its core is the ATmega32u4, running at 8 MHz with 3.3 V logic, the same proven setup used on the Flora. The chip includes 32 KB of flash, 2 KB of RAM, and native USB, allowing it to act not only as a USB-to-serial device but also as a USB keyboard, mouse, or MIDI device—with no external FTDI chip required. Full support is provided through the Arduino IDE.\u003c\/p\u003e\n\u003cp\u003eWireless connectivity is handled by Adafruit’s Bluefruit LE module, based on the Nordic nRF51822 chipset. Bluetooth Low Energy operates in the 2.4 GHz band and is fully supported by iOS, Android, macOS, and Windows 8+, making it an excellent choice for portable projects controlled by phones or tablets. Among Adafruit’s range of BLE-capable Feather boards, this model offers a solid balance of simplicity and flexibility.\u003c\/p\u003e\n\u003cp\u003eFor power, the Feather 32u4 Bluefruit includes a 3.7 V LiPo battery connector with onboard charging. The board can run directly from the micro-USB connection, automatically switching to USB power when available while charging the battery. Battery voltage is also connected through a resistor divider to an analogue pin, allowing easy monitoring of charge level. The remaining board space is used to add the Bluefruit module and two status indicator LEDs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Power of Bluefruit LE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOut of the box, most users will use the Nordic UART RX\/TX profile, which turns the BLE link into a transparent data pipe between the Feather and an iOS or Android device. Adafruit’s Bluefruit mobile apps make it easy to get started, offering tools such as a colour picker, motion and orientation data (accelerometer, gyro, magnetometer), GPS location, and an 8-button control pad. All of this data can be sent over BLE and processed directly by the ATmega32u4.\u003c\/p\u003e\n\u003cp\u003eFor more advanced use, the module supports a powerful AT command set, giving you control over advertising behaviour, custom GATT services and characteristics, and access to diagnostic data such as temperature, battery voltage, RSSI, and MAC address. The Bluefruit module also supports over-the-air firmware updates, allowing new wireless features to be added without touching the main microcontroller firmware.\u003c\/p\u003e\n\u003cp\u003eAdditional BLE roles are supported too:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBLE HID keyboard\u003c\/li\u003e\n\u003cli\u003eBLE heart rate monitor (with external pulse hardware)\u003c\/li\u003e\n\u003cli\u003eUriBeacon for broadcasting URLs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach Feather 32u4 Bluefruit comes fully assembled and tested, with headers included for soldering and breadboard use. \u003cstrong\u003eLiPo battery and micro-USB cable are not included.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/inX2fgtVk5c?si=9BPbSx3hWU0hTOCH\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eATmega32u4 @ 8MHz with 3.3V logic\/power\u003c\/li\u003e\n\u003cli\u003e3.3V regulator with 500mA peak current output\u003c\/li\u003e\n\u003cli\u003eUSB native support, comes with USB bootloader and serial port debugging\u003c\/li\u003e\n\u003cli\u003eYou also get tons of pins - 20 GPIO pins\u003c\/li\u003e\n\u003cli\u003eHardware Serial, hardware I2C, hardware SPI support\u003c\/li\u003e\n\u003cli\u003e7 x PWM pins\u003c\/li\u003e\n\u003cli\u003e10 x analogue inputs\u003c\/li\u003e\n\u003cli\u003eBuilt in 100mA lipoly charger with charging status indicator LED\u003c\/li\u003e\n\u003cli\u003ePin #13 red LED for general purpose blinking\u003c\/li\u003e\n\u003cli\u003ePower\/enable pin\u003c\/li\u003e\n\u003cli\u003e4 mounting holes\u003c\/li\u003e\n\u003cli\u003eReset button\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMeasurements: 51mm x 23mm x 8mm without headers\u003c\/li\u003e\n\u003cli\u003eWeight - 5.7 grams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRevision History\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs of July 9th, 2024\u003c\/strong\u003e – We've updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen - you may get the new PCB or the older version with vector fonts - both are identical other than the fancy silkscreen.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDatasheet\u003c\/li\u003e\n\u003cli\u003eTutorial\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Adafruit Feather 32u4 Bluefruit LE\u003c\/li\u003e\n\u003cli\u003e2x 16-pin headers\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":48623668232410,"sku":"otj1789675188577","price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0824\/8318\/3834\/files\/adafruit-feather-32u4-bluefruit-le_1.jpg?v=1789675192","url":"https:\/\/memoryfoamwear.shop\/products\/adafruit-feather-32u4-bluefruit-le","provider":"My Store","version":"1.0","type":"link"}