I found out that unifi plug in doorbell chimes use an esp32 this way because I saw one on my devices table, before it had booted fully and handshook as it's real Identity
Do you mean the non-PoE version? I have the PoE version sitting in a box somewhere and I'm a ESP32 enthusiast so I'm wondering if that's what I'll be doing today. Surely they're using it just as a WiFi coprocessor? Or...?