K129 M5Capsule M5Stack K129 M5Capsule is a versatile embedded development board powered by Stamps3 that combines sensors, power management, storage, and control functionalities. This board includes a high-performance BMI270 IMU that enables attitude control and precise motion tracking. The K129 M5Capsule also includes an RTC8563 real-time clock module to provide high-precision date and time information and support timed wake-up functionality. This board features the SPM1423 microphone sensor that supports sound recognition, recording, and wake-up functions.