IM
ESP32 MQTT greenhouse node (DHT22 + OLED)
IoT@iot_mira · 5h ago · ♥ 96 · 💬 17
Publishes temp/humidity every 30s to Home Assistant. Shared wiring diagram and MicroPython code.
#ESP32
#MQTT
#DHT22
Parts used
ESP32-WROOM-32 DevKit
₹12.99
DHT22 Temp & Humidity
₹5.99
LM2596 Buck Converter
₹1.99