{"title":"Adafruit QT Py ESP32-S2 WiFi Dev Board with uFL Antenna Port","handle":"adafruit-qt-py-esp32-s2-wifi-dev-board-with-ufl-antenna-port","url":"/products/adafruit-qt-py-esp32-s2-wifi-dev-board-with-ufl-antenna-port","description":"The Adafruit QT Py ESP32-S2 with uFL Antenna Port is the extended-range version of the QT Py ESP32-S2. Instead of an on-board antenna, it features a uFL connector so you can attach any 2.4 GHz Wi-Fi antenna for significantly better range — ideal for projects where the board is enclosed in a metal case or positioned far from the router.\n\nBuilt around the ESP32-S2 — a single-core 240 MHz Tensilica processor with 4 MB flash, 2 MB PSRAM, and native USB — this board can act as a USB keyboard, mouse, MIDI device, or disk drive while connecting to Wi-Fi. Program it with CircuitPython or Arduino, and use the STEMMA QT / Qwiic connector for plug-and-play I2C sensors.\n\nKey Features\n\n\nuFL Antenna Port – Connect any 2.4 GHz Wi-Fi antenna for extended range\n\nESP32-S2 Tensilica Processor – Single-core 240 MHz with 4 MB flash and 2 MB PSRAM\n\nWi-Fi 2.4 GHz – Built-in Wi-Fi for IoT connectivity\n\nNative USB – USB keyboard/mouse HID, MIDI, serial console, and disk drive support\n\nUSB-C Connector – For programming, power, and USB device functions\n\nSTEMMA QT / Qwiic Connector – Plug-and-play I2C for sensors and accessories\n\nRGB NeoPixel LED – With controllable power pin for low-power sleep\n\n13 GPIO Pins – 10× 12-bit ADC, 1× 8-bit DAC, PWM on any pin, 5× capacitive touch\n\nTwo I2C Ports – One on breakout pads, one on STEMMA QT connector\n\nHardware UART, SPI & I2S – Full peripheral support\n\nCircuitPython & Arduino – Full support for both platforms\n\n3.3 V Regulator – AP2112 with 600 mA peak output\n\nBattery Input Pads – On the underside with diode protection for up to 6 V\n\nSeeed Xiao Compatible – Same size and pinout with castellated pads\n\n\nAlso Consider\n\n\nQT Py ESP32-S2 (On-Board Antenna) – Same board with built-in antenna if you don't need extended range\n\nQT Py ESP32-S3 – Dual-core with Wi-Fi + BLE and native USB\n\nQT Py ESP32 Pico – Classic dual-core ESP32 with Bluetooth Classic + BLE\n\n\nIdeal For\n\nWi-Fi projects requiring extended antenna range\nEnclosures that block the on-board antenna signal\nIoT sensors in remote or hard-to-reach locations\nUSB HID devices with wireless connectivity\n\n\n\nImportant: This board does not include an on-board antenna. You must connect a 2.4 GHz uFL antenna (sold separately) for Wi-Fi to function. Use a uFL to RP-SMA adapter for standard Wi-Fi antennas — note that most Wi-Fi antennas use RP-SMA (not SMA).\n\n\n\nNote: The ESP32-S2 is single-core and does not have Bluetooth support. There is a known hardware issue in current PCB revisions that causes deep sleep to draw ~6 mA instead of the expected lower current.\n\n\nResources\n\nAdafruit QT Py ESP32-S2 Learning Guide\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":2490,"title":"Default Title","sku":"AF-5348","price":25.18,"on_sale":false,"in_stock":true,"available_quantity":109,"option1":"Default Title"}]}