DIY ESP32 Walkie-Talkie with I2S Audio and ESP-NOW — "EchoLink Mini"

If you've ever dreamed of building a digital walkie-talkie from scratch, one that works without the internet, routers, or cellular networks, you're in the right place. Introducing EchoLink Mini, a compact, low-latency wireless voice communicator powered by ESP32, I2S audio components, and ESP-NOW.