{"title":"Adafruit QT Py ESP32-C3 WiFi Dev Board with STEMMA QT","handle":"adafruit-qt-py-esp32-c3-wifi-dev-board-with-stemma-qt","url":"/products/adafruit-qt-py-esp32-c3-wifi-dev-board-with-stemma-qt","description":"The Adafruit QT Py ESP32-C3 is a compact Wi-Fi and Bluetooth LE development board built around the Espressif ESP32-C3 — a RISC-V microcontroller designed as a modern replacement for the ESP8266. In the tiny QT Py form factor (Seeed Xiao compatible), it packs USB-C, Wi-Fi, BLE 5.0, a STEMMA QT connector, and an RGB NeoPixel into a board small enough to embed anywhere.\n\nThe ESP32-C3 features a single 32-bit RISC-V core with 4 MB flash, 400 KB SRAM, and built-in USB-to-Serial (note: not native USB, so it cannot act as a keyboard or disk drive). It supports 2.4 GHz Wi-Fi and Bluetooth LE including Mesh, making it ideal for IoT projects. Program it with Arduino or MicroPython.\n\nKey Features\n\n\nESP32-C3 RISC-V Core – 32-bit single-core processor with 4 MB flash and 400 KB SRAM\n\nWi-Fi 2.4 GHz – Full Wi-Fi with TLS/SSL support for secure IoT connections\n\nBluetooth LE 5.0 – Including Mesh support (not Bluetooth Classic)\n\nUSB-C Connector – Built-in USB-to-Serial for programming and JTAG debugging\n\nSTEMMA QT / Qwiic Connector – Plug-and-play I2C for sensors and accessories\n\nRGB NeoPixel LED – Built-in addressable LED\n\n13 GPIO Pins – 11 on breakout pads; 5× 12-bit ADC, PWM on any pin, hardware UART, SPI, I2C, and I2S\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 input\n\nLow Power Modes – Light sleep at ~500 µA, deep sleep at ~300 µA\n\nReset & Boot Buttons – Reset switch and GPIO 9 boot button for ROM bootloader entry\n\nSeeed Xiao Compatible – Same size and pinout with castellated pads for surface mounting\n\n\nAlso Consider\n\n\nQT Py ESP32-S2 – Native USB with CircuitPython support\n\nQT Py ESP32-S3 – Wi-Fi + BLE with native USB and 2 MB PSRAM\n\nQT Py RP2040 – Dual-core ARM with CircuitPython (no Wi-Fi)\n\nQT Py SAMD21 – ARM Cortex-M0+ with native USB and CircuitPython\n\n\nIdeal For\n\nWi-Fi connected IoT sensors and controllers\nBluetooth LE mesh networks\nCompact wireless projects with STEMMA QT sensors\nBattery-powered low-power applications\n\n\n\nNote: The ESP32-C3 uses a RISC-V core (not Tensilica) and has built-in USB-to-Serial — not native USB. It cannot act as a USB keyboard, MIDI device, or disk drive. It does not run CircuitPython. For native USB support, consider the QT Py ESP32-S2 or ESP32-S3.\n\n\nResources\n\nAdafruit QT Py ESP32-C3 Learning Guide\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":2381,"title":"Default Title","sku":"AF-5405","price":19.41,"compare_at_price":0.0,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}