{"title":"Adafruit Metro ESP32-S3 with 16 MB Flash 8 MB PSRAM","handle":"adafruit-metro-esp32-s3-with-16-mb-flash-8-mb-psram","url":"/products/adafruit-metro-esp32-s3-with-16-mb-flash-8-mb-psram","description":"The Adafruit Metro ESP32-S3 brings the powerful dual-core ESP32-S3 to the familiar Metro/UNO shield-compatible form factor. With 16 MB flash, 8 MB PSRAM, and 512 KB SRAM, this board has the memory to handle demanding CircuitPython, Arduino, or ESP-IDF projects with WiFi and Bluetooth LE connectivity.\n\nNative USB support means the Metro ESP32-S3 can act as a keyboard, mouse, MIDI device, or disk drive. A built-in LiPo battery charger and MAX17048 fuel gauge provide complete battery management with voltage and state-of-charge monitoring, while deep sleep mode draws as little as ~100 µA for battery-powered deployments.\n\nKey Features\n\n\nESP32-S3 Dual-Core 240 MHz Processor – With native USB and AI acceleration support\n\n16 MB Flash + 8 MB PSRAM + 512 KB SRAM – Massive memory for large buffers and complex applications\n\nWiFi + Bluetooth LE – 2.4 GHz 802.11 b/g/n and BLE connectivity\n\nNative USB – Acts as keyboard, mouse, MIDI device, or disk drive\n\nMetro/UNO Shield Compatible – Standard form factor for plug-in shields\n\nUSB-C + LiPo Battery Power – Dual power options with built-in battery charging\n\nMAX17048 Battery Monitor – Active voltage and charge percentage tracking over I2C\n\nUltra-Low Power Sleep – ~100 µA deep sleep current from LiPo connection\n\nSTEMMA QT / Qwiic Port – Switchable-power I2C connector for low-power modes\n\nStatus LEDs + NeoPixel – On, Charge, and User LEDs with pin-controlled NeoPixel power\n\nReset & DFU Buttons – Quick access to ROM bootloader via USB serial\n\nJTAG 2×5 Header – For advanced debugging\n\nFCC/CE Certified Module – Ready for product development\n\n\nIdeal For\n\nWiFi and BLE IoT projects with shield compatibility\nBattery-powered portable wireless devices\nCircuitPython, Arduino, or ESP-IDF development\nUSB HID projects (keyboard, mouse, MIDI)\nAI and machine learning edge applications\n\n\nPackage Contents\n\n1× Adafruit Metro ESP32-S3 (with headers)\n\n\n\nTip: For lowest power consumption in sleep mode, turn off the NeoPixel and external I2C power via the switchable STEMMA QT connector.\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":1498,"title":"Default Title","sku":"AF-5500","price":47.92,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}