Arduino-Controlled Water Pump with Relay and Rocker Switch

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Circuit Documentation

Summary of the Circuit

This circuit is designed to control a Mini Water Pump using an Arduino UNO microcontroller and a 5V relay. The relay is used to switch the high-current circuit of the pump on and off, while the Arduino UNO provides the control logic. A rocker switch is included to manually control the power supply to the relay.

Component List

Rocker Switch

Pins: output, input
Description: A manual switch that can toggle the power supply to the relay.

Mini Water Pump

Pins: VCC, GND
Description: A pump that operates on a 5V supply, used for pumping water.

5V Relay

Pins: Normally Open (NO), Common terminal (COM), Normally Closed (NC), In, GND, VCC
Description: An electromechanical switch that allows the Arduino to control high-power devices like the Mini Water Pump.

Arduino UNO

Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13
Description: A microcontroller board based on the ATmega328P, used for controlling the logic of the circuit.

Wiring Details

Rocker Switch

Output: Connected to the VCC of the 5V relay.
Input: Connected to the Normally Open (NO) terminal of the 5V relay.

Mini Water Pump

VCC: Connected to the Common terminal (COM) of the 5V relay.
GND: Connected to the GND of the Arduino UNO.

5V Relay

VCC: Connected to the 5V of the Arduino UNO and the output of the rocker switch.
GND: Connected to the GND of the Arduino UNO.
Normally Open (NO): Connected to the input of the rocker switch.
Common terminal (COM): Connected to the VCC of the Mini Water Pump.
In: Connected to the D8 pin of the Arduino UNO.

Arduino UNO

5V: Provides power to the VCC of the 5V relay.
GND: Common ground for the relay and the Mini Water Pump.
D8: Controls the relay's In pin to switch the pump on and off.

Documented Code

Arduino UNO Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Notes (documentation.txt)

No additional code documentation was provided.