{"title":"Adafruit Feather M0 WiFi with uFL - ATSAMD21 + ATWINC1500 [fw 19.4.4]","handle":"adafruit-feather-m0-wifi-with-ufl-atsamd21-atwinc1500-fw-19-4-4","url":"/products/adafruit-feather-m0-wifi-with-ufl-atsamd21-atwinc1500-fw-19-4-4","description":"The Feather M0 WiFi with uFL pairs the ATSAMD21G18 ARM Cortex M0+ processor with an ATWINC1500 Wi-Fi module, featuring a uFL connector instead of an on-board antenna. This allows you to connect an external 2.4 GHz antenna for improved range or custom antenna placement in enclosures.\n\nThe ATWINC1500 handles all Wi-Fi networking on a dedicated chip, freeing the main processor for your application code. It offers low power consumption (~12 mA active, ~2 mA sleep), SSL/TLS 1.2 support, Soft-AP mode, and WEP/WPA/WPA2 encryption with fast scanning and reliable streaming.\n\nKey Features\n\n\nATSAMD21G18 Processor – ARM Cortex M0+ running at 48 MHz, 3.3V logic\n\n256 KB Flash + 32 KB RAM – No EEPROM\n\nATWINC1500 Wi-Fi Module – FCC-certified 802.11b/g/n with uFL antenna connector\n\nSSL/TLS 1.2 – Secure connections handled by the Wi-Fi module\n\nSoft-AP Mode – Create your own wireless access point\n\nLow Power Wi-Fi – ~12 mA active (WINC) + ~10 mA (ATSAMD21); Wi-Fi module sleeps at ~2 mA\n\n600 mA Regulator – AP2112K-3.3 regulator supports Wi-Fi transmit peaks up to 300 mA\n\nNative USB – Built-in USB-to-Serial for programming and debugging\n\n20 GPIO Pins – Hardware Serial, I2C, and SPI; 8× PWM, 10× analogue inputs, 1× analogue output\n\n200 mA LiPo Charger – JST connector with charging status LED and battery voltage monitoring\n\nSWD Debug – SWDIO/SWCLK pads on the bottom for CMSIS-DAP debugging\n\nSlightly Larger – 53.65 mm × 23 mm × 8 mm (2.6 mm longer than standard Feathers), weighing 6.1 g\n\n\n\nImportant: This version does not include an on-board antenna. A 2.4 GHz antenna with uFL connector is required and sold separately.\n\n\n\nNote: CircuitPython is not supported on this board — the ATWINC1500 Wi-Fi stack does not fit in the ATSAMD21's memory. Use Arduino IDE for development.\n\n\nAlso Available\n\n\nFeather M0 WiFi – Same board with on-board antenna\n\nFeather M0 Express – CircuitPython with 2 MB flash\n\nFeather M0 Basic Proto – Prototyping area\n\nFeather M0 Adalogger – MicroSD data logging\n\nFeather M0 Bluefruit LE – Bluetooth Low Energy\n\nFeather M0 RFM95 LoRa 900 MHz – Long-range LoRa radio\n\nFeather M0 RFM69HCW 868/915 MHz – Packet radio\n\n\nIdeal For\n\nEnclosure-mounted projects needing external antenna placement\nApplications requiring extended Wi-Fi range\nBattery-powered IoT devices with low power requirements\nCustom antenna configurations\n\n\nPackage Contents\n\n1× Feather M0 WiFi with uFL (ATSAMD21 + ATWINC1500)\n1× Header pin set\n\n\n\nNote: External 2.4 GHz uFL antenna, LiPo battery, and USB cable sold separately.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":11165,"title":"Default Title","sku":"AF-3061","price":70.91,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}