{"title":"Adafruit QT Py ESP32-S3 WiFi Dev Board with STEMMA QT","handle":"adafruit-qt-py-esp32-s3-wifi-dev-board-with-stemma-qt","url":"/products/adafruit-qt-py-esp32-s3-wifi-dev-board-with-stemma-qt","description":"The Adafruit QT Py ESP32-S3 packs dual-core 240 MHz processing, Wi-Fi, Bluetooth LE, and native USB into the tiny QT Py form factor. With 8 MB flash and 512 KB SRAM, it's a significant step up from the ESP32-S2 — adding a second core, BLE support, and more memory while keeping native USB for CircuitPython disk-drive mode, HID devices, and MIDI.\n\nProgram it with CircuitPython, Arduino, or ESP-IDF. The STEMMA QT / Qwiic connector gives you plug-and-play I2C access to hundreds of sensors, and the Seeed Xiao-compatible pinout with castellated pads makes it easy to embed in custom designs.\n\nKey Features\n\n\nESP32-S3 Dual-Core Tensilica – 240 MHz with 8 MB flash and 512 KB SRAM\n\nWi-Fi 2.4 GHz – Built-in Wi-Fi for IoT connectivity\n\nBluetooth LE – BLE support for wireless peripherals and mesh (no Bluetooth Classic)\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 ultra-low-power sleep\n\n13 GPIO Pins – 10× 12-bit ADC, 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\nLow Power Modes – Light sleep at 2–4 mA, deep sleep at ~70 µA\n\nSeeed Xiao Compatible – Same size and pinout with castellated pads\n\n\nAlso Consider\n\n\nQT Py ESP32-S3 with 2 MB PSRAM – Same chip with added PSRAM for larger buffers\n\nQT Py ESP32-S2 – Single-core with native USB (no BLE)\n\nQT Py ESP32 Pico – Classic ESP32 with Bluetooth Classic + BLE (no native USB)\n\nQT Py ESP32-C3 – RISC-V core with Wi-Fi + BLE (lower cost, no native USB)\n\n\nIdeal For\n\nWi-Fi + BLE IoT projects with native USB\nCircuitPython development with wireless connectivity\nUSB HID devices (keyboards, mice, MIDI controllers)\nCompact wireless sensors and controllers\nBattery-powered low-power wireless projects\n\n\n\nNote: This version has no PSRAM. If your project requires large buffers (e.g. image processing or large JSON parsing), consider the QT Py ESP32-S3 with 2 MB PSRAM. The ESP32-S3 supports Bluetooth LE only — not Bluetooth Classic.\n\n\nResources\n\nAdafruit QT Py ESP32-S3 Learning Guide\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":2242,"title":"Default Title","sku":"AF-5426","price":30.49,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}