Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes a Raspberry Pi 3B, a Piezo Buzzer, a DC Motor, an AC-DC PSU board, a 2-Channel Relay, a TTL Serial JPEG Camera, a rocker switch, and a water pump. The circuit is designed to control various components using the Raspberry Pi, with power supplied by the AC-DC PSU board.

Component List

1. Raspberry Pi 3B

   • Description: A single-board computer used to control the circuit.
   • Pins: 3v3, GPIO2, GPIO3, GPIO4, GND, GPIO17, GPIO27, GPIO22, 3V3, GPIO10, GPIO9, GPIO11, ID_SD, GPIO5, GPIO6, GPIO13, GPIO19, GPIO26, GPIO21, GPIO20, GPIO16, GPIO12, ID_SC, GPIO7, GPIO8, GPIO25, GPIO24, GPIO23, GPIO18, GPIO15, GPIO14, 5V

2. Piezo Buzzer

   • Description: A buzzer used to produce sound.
   • Pins: pin 1, pin 2

3. DC Motor

   • Description: A motor used for mechanical movement.
   • Pins: pin 1, pin 2

4. AC-DC PSU board 220V-5V&12V

   • Description: A power supply unit that converts AC to 5V and 12V DC.
   • Pins: AC-N, AC-L, +5V, GND, +12V

5. 2-Channel Relay (5V 10A)

   • Description: A relay module used to control high-power devices.
   • Pins: K1-Off, K1-In, K2-On, K2-In, K1-On, K2-Off, VCC, JD-GND, IN2, IN1, GND

6. TTL Serial JPEG Camera

   • Description: A camera module for capturing images.
   • Pins: GND, RX, TX, CVBS, 5V

7. Rocker Switch

   • Description: A switch used to control the power to the DC Motor.
   • Pins: output, input

8. Water Pump

   • Description: A pump used for moving water.
   • Pins: positive, negative

Wiring Details

Raspberry Pi 3B

• GND is connected to Piezo Buzzer pin 2.
• GPIO7 is connected to Piezo Buzzer pin 1.
• GPIO8 is connected to 2-Channel Relay IN1.
• GPIO25 is connected to 2-Channel Relay IN2.
• GND is connected to 2-Channel Relay GND.
• 5V is connected to 2-Channel Relay VCC.

Piezo Buzzer

• pin 2 is connected to Raspberry Pi GND.
• pin 1 is connected to Raspberry Pi GPIO7.

DC Motor

• pin 1 is connected to 2-Channel Relay K2-On.
• pin 2 is connected to Rocker Switch output.

AC-DC PSU board 220V-5V&12V

• +5V is connected to 2-Channel Relay K1-In.
• GND is connected to Water Pump negative.
• GND is connected to Rocker Switch input.
• +12V is connected to 2-Channel Relay K2-In.

2-Channel Relay (5V 10A)

• IN1 is connected to Raspberry Pi GPIO8.
• IN2 is connected to Raspberry Pi GPIO25.
• GND is connected to Raspberry Pi GND.
• VCC is connected to Raspberry Pi 5V.
• K2-On is connected to DC Motor pin 1.
• K1-In is connected to AC-DC PSU board +5V.
• K2-In is connected to AC-DC PSU board +12V.
• K1-On is connected to Water Pump positive.

Rocker Switch

• output is connected to DC Motor pin 2.
• input is connected to AC-DC PSU board GND.

Water Pump

• negative is connected to AC-DC PSU board GND.
• positive is connected to 2-Channel Relay K1-On.

Code

There is no code provided for the microcontrollers in this circuit.

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This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code documentation. Each component is described, and the connections between components are detailed to ensure proper assembly and functionality.