OTA Update: Web Updater & HTTP
Update firmware via browser or HTTP server.
📚 Home
Power Saving: Deep Sleep & Wake Sources
Timer, ext0, ext1 wakeup with examples.
Preferences (NVS): Store Key‑Value
Save WiFi credentials using Preferences.
Prevent Freezes: WDT, Auto‑Reconnect, Brown‑Out
Stability hardening techniques.
Project: Door Sensor to MQTT via ESP‑NOW
Door node -> gateway publishes to MQTT.
Project: Low‑Power Temperature Logger
Deep sleep cycles + NVS + batch upload.
Project: Mini Weather Station
DHT/AHT + OLED + MQTT + Web UI.
Project: RGB Night Light (Web/BLE Control)
LEDC PWM RGB + simple web sliders or BLE characteristics.
Project: Smart Switch with Energy Meter
Relay + PZEM004T + safety + web control.
PZEM004T v3: Energy Monitoring Basics
Read voltage/current/power — safety notes included.