Circuit Documentation

Summary

This circuit involves a Raspberry Pi 4B, an IR sensor, a 2-channel relay module, and a plastic solenoid valve. The Raspberry Pi 4B serves as the central controller, interfacing with the IR sensor to detect signals and controlling the relay module to operate the solenoid valve.

Component List

Raspberry Pi 4B

• Description: A powerful single-board computer used for various applications including IoT, automation, and more.
• Pins: 3V3, 5V, GPIO2, GPIO3, GND, GPIO4, GPIO14, GPIO15, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO10, GPIO9, GPIO25, GPIO11, GPIO8, GPIO7, ID_SD, GPIO5, GPIO6, GPIO12, GPIO13, GPIO19, GPIO16, GPIO26, GPIO20, GPIO21, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN
• Purpose in Circuit: Central controller for the circuit.

IR Sensor

• Description: An infrared sensor used to detect objects or signals.
• Pins: out, gnd, vcc
• Purpose in Circuit: Detects signals and sends output to the Raspberry Pi.

Plastic Solenoid Valve

• Description: An electrically controlled valve used to control the flow of liquids or gases.
• Pins: pin1, pin2
• Purpose in Circuit: Controls the flow of a fluid based on signals from the relay module.

2-Channel Relay Module

• Description: A relay module with two channels used to control high-power devices.
• Pins: N.O. 2, COM 2, N.C. 2, N.O. 1, COM 1, N.C. 1, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, VCC+, VCC- (GND), IN 1, IN 2
• Purpose in Circuit: Acts as a switch to control the solenoid valve based on signals from the Raspberry Pi.

Wiring Details

Raspberry Pi 4B

• 5V is connected to:

  • vcc of the IR sensor
  • VCC+ of the 2-channel relay module

• GND is connected to:

  • gnd of the IR sensor
  • VCC- (GND) of the 2-channel relay module

• GPIO17 is connected to:

  • out of the IR sensor

• GPIO18 is connected to:

  • IN 1 of the 2-channel relay module

IR Sensor

• vcc is connected to:

  • 5V of the Raspberry Pi

• gnd is connected to:

  • GND of the Raspberry Pi

• out is connected to:

  • GPIO17 of the Raspberry Pi

Plastic Solenoid Valve

• pin1 is connected to:

  • N.O. 1 of the 2-channel relay module

• pin2 is connected to:

  • COM 1 of the 2-channel relay module

2-Channel Relay Module

• VCC+ is connected to:

  • 5V of the Raspberry Pi

• VCC- (GND) is connected to:

  • GND of the Raspberry Pi

• IN 1 is connected to:

  • GPIO18 of the Raspberry Pi

• N.O. 1 is connected to:

  • pin1 of the Plastic Solenoid Valve

• COM 1 is connected to:

  • pin2 of the Plastic Solenoid Valve

Code

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