ESP32‑CAM: Stream & Snapshot API
HTTP stream and /snapshot endpoint.

HTTP stream and /snapshot endpoint.

Door node -> gateway publishes to MQTT.

Deep sleep cycles + NVS + batch upload.

DHT/AHT + OLED + MQTT + Web UI.

LEDC PWM RGB + simple web sliders or BLE characteristics.

Relay + PZEM004T + safety + web control.