Waveshare ESP32-H2-Zero is a tiny USB-C development board based on Espressif Systems' ESP32-H2 RISC-V SoC with Zigbee, Thread ...

They’re controlled by an Arduino Nano which has a built-in inertial measurement unit, allowing it to sense the angle the pipe is being held at as well as making determinations about its movement.

Waveshare’s ESP32-S3-AUDIO-Board is an ESP32-S3-based low-cost smart speaker development kit with a dual microphone array, a speaker header, echo cancellation, surround RGB lighting, RTC, microSD card ...