This battery powered esp32 is making a little sound when on. Any

Reed Door Sensor (battery powered ESP32 with esphome(yaml)) - ESPHome - Home Assistant Community

ePulse Feather – a low power ESP32 development board #ESP32 #Feather @thingpulse « Adafruit Industries – Makers, hackers, artists, designers and engineers!

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Probots ESP32-WROOM-32 WiFi & BLE IoT Wireless Module Chip 4M 32Mbit Flash Buy Online India

Designed a circuit to automatically switch the power supply from the two power sources (nothing designed to).

AITRIP 3PCS Type-C USB ESP32 CH340C Development Board 2.4GHz WiFi Dual Cores Microcontroller Integrated with Antenna RF Low Noise Amplifiers Filters for Arduino : Electronics

This battery powered esp32 is making a little sound when on. Any advices to make it better? Any capacitor to add? : r/esp32

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Sound with ESP32 - I2S Protocol

Introduction to ESP32 Specifications, ESP32 DevKit Board, Layout