Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as a 4-Channel Relay, Water Pump, YF-S201 Water Flow Meter, Plastic Solenoid Valve, SMPS, Arduino UNO R4 WiFi, 1N4007 Rectifier Diode, AC source, Black Keypad 4*4, Buck converter, wire connector, Nextion display, UHF RFID FM-505, WS2815 LED Strip, and WS2812 RGB LED matrix 2x2. The circuit is designed to control water flow and pump operations, read water flow data, and display information on a Nextion display. The Arduino UNO R4 WiFi microcontroller is used to control the operations and communicate with various sensors and actuators.

Component List

4-Channel Relay

• Description: A relay module with four channels.
• Pins: NC, COM, NO, GND, IN1, IN2, IN3, IN4, VCC, JD-VCC

Water Pump

• Description: A pump used to move water.
• Pins: +, -

YF-S201 Water Flow Meter

• Description: A sensor to measure water flow.
• Pins: SIG, GND, VCC

Plastic Solenoid Valve

• Description: A valve controlled by an electric current.
• Pins: pin1, pin2

SMPS

• Description: Switched-Mode Power Supply.
• Pins: L, N, GND, -DC, +DC

Arduino UNO R4 WiFi

• Description: A microcontroller board with WiFi capabilities.
• Pins: OFF, GND, VRTC, IIC0_SCL, IIC0_SDA, 3V3, GPIO 41, GPIO 0, GPIO 42, GPIO 43, GPIO 44, BOOT, IOREF, RESET, 5V, VIN, A0, A1, A2, A3, A4, A5, RSPCKA, CIPO, COPI, D0/RX, D1/TX, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, AREF, SDA, SCL

1N4007 Rectifier Diode

• Description: A diode used for rectification.
• Pins: Cathode, Anode

AC Source

• Description: An AC power source.
• Pins: +, -

Black Keypad 4*4

• Description: A 4x4 matrix keypad.
• Pins: (Not specified)

Buck Converter

• Description: A DC-DC converter.
• Pins: IN+, IN-, OUT+, OUT-

Wire Connector

• Description: A connector for wires.
• Pins: +, -

Nextion

• Description: A touch display module.
• Pins: Vcc, TX, RX, GND

UHF RFID FM-505

• Description: An RFID reader module.
• Pins: Vcc, TX, RX, GND, EN

WS2815 LED Strip

• Description: An addressable LED strip.
• Pins: GND, B0, D0, +12V

WS2812 RGB LED Matrix 2x2

• Description: An addressable RGB LED matrix.
• Pins: GND, VCC, DIN, DOUT

Wiring Details

4-Channel Relay

• VCC: Connected to Vcc of Nextion, YF-S201 Water Flow Meter, UHF RFID FM-505, WS2815 LED Strip, VIN of Arduino UNO R4 WiFi, and OUT+ of Buck converter.
• GND: Connected to GND of Nextion, YF-S201 Water Flow Meter, UHF RFID FM-505, WS2815 LED Strip, GND of Arduino UNO R4 WiFi, and OUT- of Buck converter.
• COM: Connected to + of AC source and L of SMPS.
• NO:
  • Connected to Cathode of 1N4007 Rectifier Diode and + of Water Pump.
  • Connected to pin1 of Plastic Solenoid Valve and Cathode of 1N4007 Rectifier Diode.
• IN1: Connected to D7 of Arduino UNO R4 WiFi.
• IN2: Connected to D8 of Arduino UNO R4 WiFi.
• IN3: Connected to D9 of Arduino UNO R4 WiFi.
• IN4: Connected to D10 of Arduino UNO R4 WiFi.

Water Pump

• +: Connected to NO of 4-Channel Relay.
• -: Connected to Anode of 1N4007 Rectifier Diode and - of AC source.

YF-S201 Water Flow Meter

• VCC: Connected to Vcc of Nextion, 4-Channel Relay, UHF RFID FM-505, WS2815 LED Strip, VIN of Arduino UNO R4 WiFi, and OUT+ of Buck converter.
• GND: Connected to GND of Nextion, 4-Channel Relay, UHF RFID FM-505, WS2815 LED Strip, GND of Arduino UNO R4 WiFi, and OUT- of Buck converter.
• SIG: Connected to D11 of Arduino UNO R4 WiFi.

Plastic Solenoid Valve

• pin1: Connected to NO of 4-Channel Relay.
• pin2: Connected to Anode of 1N4007 Rectifier Diode and - of AC source.

SMPS

• L: Connected to COM of 4-Channel Relay.
• N: Connected to Anode of 1N4007 Rectifier Diode and - of AC source.
• +DC: Connected to IN+ of Buck converter.
• -DC: Connected to IN- of Buck converter.

Arduino UNO R4 WiFi

• VIN: Connected to Vcc of Nextion, 4-Channel Relay, YF-S201 Water Flow Meter, UHF RFID FM-505, WS2815 LED Strip, and OUT+ of Buck converter.
• GND: Connected to GND of Nextion, 4-Channel Relay, YF-S201 Water Flow Meter, UHF RFID FM-505, WS2815 LED Strip, and OUT- of Buck converter.
• D0/RX: Connected to RX of Nextion.
• D1/TX: Connected to TX of Nextion.
• D2: Connected to TX of UHF RFID FM-505.
• D3: Connected to RX of UHF RFID FM-505.
• D4: Connected to Black Keypad 4*4.
• D5: Connected to Black Keypad 4*4.
• D6: Connected to SIG of YF-S201 Water Flow Meter.
• D7: Connected to IN1 of 4-Channel Relay.
• D8: Connected to IN2 of 4-Channel Relay.
• D9: Connected to IN3 of 4-Channel Relay.
• D10: Connected to IN4 of 4-Channel Relay.
• D11: Connected to SIG of YF-S201 Water Flow Meter.
• D12: Connected to EN of UHF RFID FM-505.
• D13: Connected to B0 and D0 of WS2815 LED Strip.
• A0: Connected to Black Keypad 4*4.
• A1: Connected to Black Keypad 4*4.
• A2: Connected to Black Keypad 4*4.
• A3: Connected to Black Keypad 4*4.
• A4: Connected to Black Keypad 4*4.
• A5: Connected to Black Keypad 4*4.

1N4007 Rectifier Diode

• Cathode: Connected to NO of 4-Channel Relay.
• Anode: Connected to - of AC source and N of SMPS.

AC Source

• +: Connected to COM of 4-Channel Relay.
• -: Connected to Anode of 1N4007 Rectifier Diode and - of Water Pump.

Black Keypad 4*4

• Pins: Connected to D4, D5, A0, A1, A2, A3, A4, and A5 of Arduino UNO R4 WiFi.

Buck Converter

• IN+: Connected to +DC of SMPS.
• IN-: Connected to -DC of SMPS.
• OUT+: Connected to Vcc of Nextion, 4-Channel Relay, YF-S201 Water Flow Meter, UHF RFID FM-505, WS2815 LED Strip, and VIN of Arduino UNO R4 WiFi.
• OUT-: Connected to GND of Nextion, 4-Channel Relay, YF-S201 Water Flow Meter, UHF RFID FM-505, WS2815 LED Strip, and GND of Arduino UNO R4 WiFi.

Wire Connector

• +: Connected to Anode of 1N4007 Rectifier Diode and - of Water Pump.
• -: Connected to Anode of 1N4007