Circuit Documentation

Summary

This circuit is designed to control a motor using a rain sensor and a relay. The circuit includes a 7805 voltage regulator to provide a stable 5V supply to the rain sensor and relay. The motor is powered by a separate 9V battery and is controlled by the relay based on the rain sensor's output.

Component List

1. 7805 Voltage Regulator

   • Description: A linear voltage regulator that outputs a stable 5V.
   • Pins: Vin, Gnd, Vout

2. 9V Battery (Primary)

   • Description: Provides the primary power supply for the circuit.
   • Pins: -, +

3. Rain Sensor

   • Description: Detects the presence of rain and outputs a digital signal.
   • Pins: AO, DO, GRD, VCC

4. 1 Channel Relay 5V

   • Description: A relay module that can be triggered by a 5V signal to control higher power devices.
   • Pins: VCC, GND, IN, NC, COM, NO

5. Motor with Reducer

   • Description: A motor with a gear reducer to control speed and torque.
   • Pins: 3 - 6 VCC, GND

6. 9V Battery (Secondary)

   • Description: Provides power to the motor.
   • Pins: -, +

Wiring Details

7805 Voltage Regulator

• Vin: Connected to the + pin of the primary 9V Battery.
• Gnd: Connected to the - pin of the primary 9V Battery, the GRD pin of the Rain Sensor, and the GND pin of the 1 Channel Relay 5V.
• Vout: Connected to the VCC pin of the Rain Sensor and the VCC pin of the 1 Channel Relay 5V.

9V Battery (Primary)

• +: Connected to the Vin pin of the 7805 Voltage Regulator.
• -: Connected to the Gnd pin of the 7805 Voltage Regulator, the GRD pin of the Rain Sensor, and the GND pin of the 1 Channel Relay 5V.

Rain Sensor

• AO: Not connected.
• DO: Connected to the IN pin of the 1 Channel Relay 5V.
• GRD: Connected to the Gnd pin of the 7805 Voltage Regulator and the - pin of the primary 9V Battery.
• VCC: Connected to the Vout pin of the 7805 Voltage Regulator.

1 Channel Relay 5V

• VCC: Connected to the Vout pin of the 7805 Voltage Regulator.
• GND: Connected to the Gnd pin of the 7805 Voltage Regulator and the - pin of the primary 9V Battery.
• IN: Connected to the DO pin of the Rain Sensor.
• NC: Connected to the 3 - 6 VCC pin of the Motor with Reducer.
• COM: Connected to the + pin of the secondary 9V Battery.
• NO: Not connected.

Motor with Reducer

• 3 - 6 VCC: Connected to the NC pin of the 1 Channel Relay 5V.
• GND: Connected to the - pin of the secondary 9V Battery.

9V Battery (Secondary)

• +: Connected to the COM pin of the 1 Channel Relay 5V.
• -: Connected to the GND pin of the Motor with Reducer.

Code

No microcontroller code is provided for this circuit.