1 Minimalist Microcontroller: Building a Bare-Bones Dev Board
Pointed to as a demonstration of how few parts an ESP32-S3 board really requires, including programming over its built-in USB, when designing a custom board.
Channel
atomic14
9 recommended videos. Channel on YouTube
2 ESP32 Audio Input Using I2S and Internal ADC
Recommended for sampling analogue audio on an ESP32 at high rates, by reading the internal ADC through the I2S peripheral with DMA.
3 Build Your Own Voice-Controlled Robot with ESP32 & TensorFlow Lite
Pointed to as proof that an ESP32 can recognise a handful of spoken commands, and as a starting project for machine learning on microcontrollers.
4 ESP32 Walkie-Talkie: DIY Audio Magic
The go-to example for anyone wanting walkie-talkies built from a microcontroller, with voice over ESP32 and project code available on GitHub.
5 Record & Playback Audio on ESP32 SD Card: Step-by-Step Guide & Demo
Suggested for anyone stuck on ESP32 audio, showing a recorder that saves mono sound at high sample rates to an SD card, from a well-regarded channel.
6 ESP32 Audio Input Showdown: INMP441 vs SPH0645 MEMS I2S Microphones!
Recommended for connecting digital MEMS microphones to an ESP32 over I2S, including a timing quirk of the SPH0645 that the INMP441 avoids.
7 ESP-Now Range Test: Real-World Results for ESP32 Devices!
Recommended for its real-world range testing of ESP-NOW, comparing normal and long range modes, which helps decide whether the protocol can cover a given distance.
8 Easy S3 PCB and Schematic - it’s really simple.
Treated as a useful entry in a series on designing your own ESP32 board, showing how few parts a working circuit can need.
9 ESP32 Audio: I2S & Built-In DACs Explained
Shared as an example of playing audio through the ESP32 built-in DAC, and also as a way to judge how rough that output sounds.
