M5Stack Stopwatch Dev Kit (ESP32-S3)

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It features an ESP32-S3R8 main controller with 16MB Flash and 8MB PSRAM, and supports 2.4GHz Wi-Fi wireless communication. The device integrates a 1.75" AMOLED round touch display, programmable buttons, and vibration feedback to provide an intuitive human-machine interaction experience. It also provides audio input/output, IMU attitude sensing, RTC timekeeping, and multiple expansion interfaces. Together with the M5PM1 multi-level power management system and a 450mAh battery, it can meet diverse development needs such as portable smart control, wearable human-machine interaction, and lightweight IoT terminals. Features ESP32-S3R8 core controller: 16MB Flash + 8MB PSRAM 2.4GHz Wi-Fi Interactive experience: 1.75" AMOLED round touch display 2 x programmable buttons, 1 x power button Built-in vibration motor 6-axis IMU BMI270 Audio system: ES8311 Audio Codec MEMS MIC AW8737A amplifier RTC clock chip RX8130CE Expansion capability: HY2.0-4P expansion interface Rear expansion bus (2.54-7P, 2.54-6P) Lanyard hole design Rear magnetic attachment design Power system: M5PM1 multi-level power management system Built-in 450mAh battery Balances battery life and low-power operation Includes 1 x StopWatch Applications Portable smart devices Electronic badges Lightweight IoT terminals Specifications Specification Parameter 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 Learn and Documents → DOCUMENTS Show more