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  "path": "/2026/05/22/m5stack-stopwatch-esp32-s3-devkit-offers-1-75-inch-touch-amoled-microphone-speaker-and-gpio-expansion/",
  "publishedAt": "2026-05-22T07:47:35.000Z",
  "site": "https://www.cnx-software.com",
  "tags": [
    "Audio",
    "Espressif",
    "Hardware",
    "amoled",
    "Arduino",
    "bluetooth",
    "esp32",
    "IoT",
    "m5stack",
    "smart speaker",
    "touchscreen",
    "wearables",
    "wifi",
    "M5Stack StopWatch ESP32-S3 devkit offers 1.75-inch touch AMOLED, microphone, speaker, and GPIO expansion",
    "CNX Software - Embedded Systems News"
  ],
  "textContent": "M5Stack Core StopWatch is an ESP32-S3-powered WiFi and Bluetooth development board with a 1.75-inch round AMOLED touch display, 16MB flash, and 8MB PSRAM designed for portable IoT devices, electronic badges, and wearables. The device also features a 1W speaker and a MEMS microphone for voice interaction, two programmable buttons, a vibration motor, a 6-axis IMU sensor, an RTC, and expansion capabilities through a Grove connector and GPIO headers. It’s powered by a 450 mAh battery managed by an “M5PM1 multi-level power management” solution and charged over a USB-C port. M5Stack Core StopWatch specifications: SoC – Espressif ESP32-S3R8 CPU – Dual-core Tensilica LX7 microcontroller up to 240 MHz with vector instructions for AI acceleration Memory – 8MB PSRAM Wireless – WiFi 4 and Bluetooth 5.0 LE + Mesh connectivity Storage – 16MB flash Display – 1.75-inch AMOLED round touch display with 466 x 466 resolution Audio 1W speaker MEMS microphone ES8311 [...]\n\nThe post M5Stack StopWatch ESP32-S3 devkit offers 1.75-inch touch AMOLED, microphone, speaker, and GPIO expansion appeared first on CNX Software - Embedded Systems News.",
  "title": "M5Stack StopWatch ESP32-S3 devkit offers 1.75-inch touch AMOLED, microphone, speaker, and GPIO expansion"
}