Q: Which microcontroller is used in this project?
A: A 40 pin microcontroller from 8051 family is used in this project.
Q: What is automatic irrigation system?
A: Automatic irrigation system automatically switches the pump on/off by sensing the soil moisture condition
Q: How is the soil moisture sensing taken place?
A: By using two copper wires(that can be connected to 2 nails) provided with the kit, soil moisture sensing takes place.
Q: What is the rating of the pump used?
A: 230V mini submersible pump is used in the project.
Q: What is the role of microcontroller?
A: Depending on the input from soil moisture sensed, microcontroller switches the pump on/off using relay and also displays the condition on LCD
Q: Which kind of moisture sensor is using in this project?
A: The objective behind the project is to understand the technology behind it so it is truly not a commercial product. Therefore we provide neither moisture sensor nor the sprinkler. Two rods inserted on to the soil is used as wet soil sensor while a pump provided forms the water delivery.
Q: What is the formula for calculating smoothing capacitor value?
A: There is some approximated formula .Peak to peak ripple voltage = Load current in amps / (2*line frequency in hertz *capacitance in farads). But as rule of thumb for 1 A current 1000uF is best. Thus it is load dependent.