DESCRIPTION The M5Stack Stopwatch Dev Kit is a purpose-built development platform powered by the ESP32-S3, designed for precise timing, sports tracking, and real-time measurement applications. It combines the processing power of the ESP32-S3 with a compact M5Stack form factor, making it an ideal choice for Singapore's maker community, schools, and IoT developers who need accurate elapsed-time functionality out of the box. The kit provides a complete hardware foundation for stopwatch-style applications, with wireless connectivity and expandability through the M5Stack ecosystem. FEATURES Powered by ESP32-S3 dual-core Xtensa LX7 processor, up to 240 MHz Compact M5Stack form factor with GPIO expansion header for peripheral add-ons Wi-Fi 802.11 b/g/n and Bluetooth 5.0 (LE) for wireless data logging and connectivity USB-C interface for programming and power supply Compatible with Arduino IDE, MicroPython, and UIFlow 2.0 Stackable design for integration with M5Stack modules and bases Built-in button inputs for start/stop/reset control APPLICATIONS Sports timing and lap recording for athletics and cycling Lab experiment timing and data-logging for schools and research Industrial process timing and cycle-count monitoring IoT-connected stopwatch with cloud data upload via Wi-Fi Reaction time measurement for cognitive and HCI research Prototype development for wearable or handheld timing devices TECHNICAL DETAILS SoC: ESP32-S3R8 dual-core Xtensa LX7, up to 240MHz Flash: 16MB PSRAM: 8MB Wireless: 2.4GHz Wi-Fi Display: 1.75" AMOLED round touch display, 466x466 resolution, CO5300 driver chip, QSPI interface Touch: CST820B driver chip Buttons: 2 x programmable buttons + 1 x power button Vibration Feedback: Built-in vibration motor Audio Codec: ES8311 Microphone: MEMS MIC Audio Amplifier: AW8737A IMU: BMI270 RTC: RX8130CE Expansion Interface: HY2.0-4P Rear Expansion Bus: 2.54-7P, 2.54-6P Body Structure: Lanyard hole Power Management: M5PM1 multi-level power management Battery Capacity: 450mAh Input Power: USB Type-C DC 5V Product Size: 52.0 x 52.0 x 15.5mm Product Weight: 39.0g Package Size: 70.0 x 70.0 x 23.6mm Gross Weight: 49.5g DOCUMENTS Click here SHIPPING LIST 1x M5Stack Stopwatch Dev Kit (ESP32-S3)
