The project aims in designing a system which is capable of detecting moisture level in the soil and capable of taking the decision of switching ON/ OFF water pump. The system also uses temperature sensor to detect the temperature level and control the water pump automatically using Relay switch.   The system makes use of a Microcontroller. The output from soil moisture detecting probes sensor is fed to Microcontroller. The Microcontroller will continuously compare output from probes and reference voltage and generates logic low or high. The output generated from Microcontroller is used to drive a water pump through a Relay switch. And microcontroller will upload the sensor data into the thingspeak cloud through esp8266 wi-fi module also display the sensor data on LCD module. To achieve this task microcontroller loaded program written in embedded C language.  

The major features of this project are:

 

• Automatic switching of Water pump.
• Simple electronic circuit.
• Automatic temperature and moisture detection using sensors.
• Using IOT technology to upload the sensor data into the thingspeak cloud.
• Visible alerts using LCD display.

  The project provides learning’s on the following advancements:  

1. Designing of soil moisture and temperature sensors.
2. Conversion of AC supply to DC supply.
3. Embedded C programming.
4. Relay/TRIAC working principle and need for driver.
5. PCB design.

        The major building blocks of this project are:  

1. Regulated Power Supply.
2. PIC Microcontroller.
3. Soil moisture sensor.
4. Relay with driver.
5. Crystal oscillator
6. LED Indicators.
7. Temperature sensor
8. Reset
9. ESP8266 WI-FI Module.
10. LCD display.

    Software’s used:    

• PIC-C compiler for Embedded C programming.
• PIC kit 2 programmer for dumping code into Micro controller.
• Express SCH for Circuit design.

   

Regulated Power Supply:

   

Block Diagram:

 

video: