Wiring the ESP8266 12E Remote Soil Moisture Temperature & Humidity Monitor

Wired Developer

7 years ago

Another illustration that demonstrate how to use the ESP8266 as a web-based Soil Moisture / Temperature and Humidity Monitor. If you’re new to ESP8266 please refer to this link. There are 3 main component are used to this project. The ESP8266, DHT11/12, and the Soil Moisture Sensor, as you can see the diagram below there are 3 sensors to accomplish this projects the ESP8266 WiFi Transceiver, two plate soil moisture, and the DHT11 Temperature & Humidity sensor. This project also tested in ESP8266 12E NodeMCU, ESP8266 Version 7, ESPDuino, WeMos Board.

Required Components

ESP8266 12, 12E, ESP8266 NodeMCU, ESPDuino, WeMos.
Soil Moisture Sensor Module or Build your own Sensor
DHT11, DHT12 Sensor or DHT11 / DHT12 Module
NPN Transistor (Optional)
Two Conducted Plate (Optional)
2 Battery Case for 3.3v Out / 2 Double A Battery (For Stand Alone Option)
LED (Any Color)
Resistor (See the diagram below for value reference)
Capacitors (See the diagram below for value reference)
USB TTL UART (For Programming the ESP8266)
Solder Less Bread Board
Jumper Wires

Flashing Guide

For flashing using NodeMCU to ESP8266 12 or Flashing with ESP8266 Download Tool just follow this link & for ESP8266 Arduino Integration just follow also this link or if you are using MAC OS refer to this link Note: The AT command must be end with “\r\n”. For Arduino, must type the AT command like this > Serial1.print(“AT+GMR\r\n”);