ACTIVITY:TROUBLESHOOT THE AUTOMATIC PLANT IRRIGATION SYSTEM CIRCUIT.
Date: 23 / 11 / 2016
Objective:
Ø To troubleshoot the Automatic Plant Irrigation System circuit by guide from circuit diagram connection that we discuss with Dr. Zulkhairi last week.
Ø To see the functional of the circuit.
Content or Procedure:
First, we need to provide all component that use in this circuit such as relay 12v, soil moisture sensor and electronic valve. Then, we can made a connection on the breadboard to troubleshoot the circuit by guide from the circuit diagram that we create.
Figure 1: The application of electronic valve at the tank.
The electronic valve we use normally close because when the power is ON, it will open the valve then supply for plant while if the power is OFF it will close the valve and water cannot supply. This valve will equipped with tube to flow the water to the soil. This electronic valve need to connected with 12 DC volt to function. The valve only have 2 input that is VCC and GND.
Figure 2: Electronic Valve 12 v normally close
Next, Soil moisture sensor has 2 input and 4 output. The 2 input connected with soil moisture probe. The output of the soil moisture sensor is connected with VCC , GND and need to choose one type of the output to apply in the circuit either analog or digital output to be connected with relay. For this circuit, we need to use digital output because this project just has 2 statement only to turn ON and OFF the electronic valve. The specification of Soil moisture sensor circuit as below:
Ø Operating Voltage: DC 3.3V-5V
Ø Output Voltage signal: 0-4.2V
Ø Current: 35mA
Ø LED: Power indicator (RED) and Digital switching output indicator (Green)
Ø Size: 60 x 20 x 5mm
Figure 3: Soil moisture sensor
With this 2 component, we need to connected with Relay 12v to control the circuit in one signal.
Result and Analysis:
After make a connection in the breadboard, the valve is not function. When we connected the valve with battery 12 DC volt, it not supply water from the tank and the water is not come out. With this problem, we cannot to make a troubleshoot for Automatic Plant Irrigation System circuit.
Conclusion:
As a conclusion, we need to see Dr. Zulkhairi and show to him this problem.