Circuit Documentation

Summary

This project is a Reifeschrank (maturation cabinet) that controls a relay module, reads data from a DHT11 sensor, and displays information on an LCD. The relays control devices such as fans, a humidifier, and a heater. Pushbuttons are used for user input to adjust temperature and humidity settings. The system is powered by a 5V power supply and is controlled by an Arduino UNO R4 WiFi.

Component List

1. Arduino UNO R4 WiFi

   • Description: Microcontroller board based on the ATmega328P.
   • 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

2. 5V 8Channel Relay

   • Description: Relay module to control high voltage devices.
   • Pins: GND, IN1, IN2, IN3, IN4, IN5, IN6, IN7, IN8, VCC, NC, C, NO

3. DHT11 Humidity and Temperature Sensor

   • Description: Sensor to measure temperature and humidity.
   • Pins: VDD, DATA, NULL, GND

4. MKE-M07 LCD1602 I2C

   • Description: 16x2 LCD display with I2C interface.
   • Pins: GND, 5V, SDA, SCL

5. POWER SUPPLY 5V 5AMP

   • Description: Power supply providing 5V DC output.
   • Pins: 220V Positive Pole (AC), 220V Negative Pole (AC), GND, GND (DC), 12V-24V Output (DC)

6. Power 220V

   • Description: 220V AC power source.
   • Pins: hot wire, neutral wire

7. Red Light 220VAC

   • Description: Indicator light for 220V AC.
   • Pins: -, +

8. Green Light 220VAC

   • Description: Indicator light for 220V AC.
   • Pins: +, -

9. Pushbutton

   • Description: Button for user input.
   • Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in)

10. Pushbutton

    • Description: Button for user input.
    • Pins: Pin 2, Pin 1, Pin 3, Pin 4

11. Pushbutton

    • Description: Button for user input.
    • Pins: Pin 2, Pin 1, Pin 3, Pin 4

12. Pushbutton

    • Description: Button for user input.
    • Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in)

13. 220 Fan

    • Description: Fan for ventilation.
    • Pins: N, L

14. 220 Fan

    • Description: Fan for ventilation.
    • Pins: N, L

15. 220 Fan

    • Description: Fan for ventilation.
    • Pins: N, L

16. 220 Fan

    • Description: Fan for ventilation.
    • Pins: N, L

17. Heater Element

    • Description: Heating element.
    • Pins: VCC, GND

Wiring Details

Arduino UNO R4 WiFi

• 5V connected to:

  • POWER SUPPLY 5V 5AMP (12V-24V Output (DC))
  • MKE-M07 LCD1602 I2C (5V)
  • 5V 8Channel Relay (VCC)
  • DHT11 Humidity and Temperature Sensor (VDD)

• GND connected to:

  • 5V 8Channel Relay (GND)
  • DHT11 Humidity and Temperature Sensor (GND)
  • POWER SUPPLY 5V 5AMP (GND (DC))
  • MKE-M07 LCD1602 I2C (GND)
  • Pushbutton (Pin 1 (in))
  • Pushbutton (Pin 1)
  • Pushbutton (Pin 1)
  • Pushbutton (Pin 3 (out))

• A4 connected to:

  • MKE-M07 LCD1602 I2C (SDA)

• A5 connected to:

  • MKE-M07 LCD1602 I2C (SCL)

• D1/TX connected to:

  • 5V 8Channel Relay (IN1)

• D2 connected to:

  • 5V 8Channel Relay (IN2)

• D3 connected to:

  • 5V 8Channel Relay (IN3)

• D4 connected to:

  • 5V 8Channel Relay (IN4)

• D5 connected to:

  • 5V 8Channel Relay (IN5)

• D6 connected to:

  • 5V 8Channel Relay (IN6)

• D7 connected to:

  • 5V 8Channel Relay (IN7)

• D8 connected to:

  • 5V 8Channel Relay (IN8)

• D9 connected to:

  • DHT11 Humidity and Temperature Sensor (DATA)

• D10 connected to:

  • Pushbutton (Pin 3 (out))

• D11 connected to:

  • Pushbutton (Pin 3)

• D12 connected to:

  • Pushbutton (Pin 3)

• D13 connected to:

  • Pushbutton (Pin 1 (in))

5V 8Channel Relay

• VCC connected to:

  • Arduino UNO R4 WiFi (5V)

• GND connected to:

  • Arduino UNO R4 WiFi (GND)

• IN1 connected to:

  • Arduino UNO R4 WiFi (D1/TX)

• IN2 connected to:

  • Arduino UNO R4 WiFi (D2)

• IN3 connected to:

  • Arduino UNO R4 WiFi (D3)

• IN4 connected to:

  • Arduino UNO R4 WiFi (D4)

• IN5 connected to:

  • Arduino UNO R4 WiFi (D5)

• IN6 connected to:

  • Arduino UNO R4 WiFi (D6)

• IN7 connected to:

  • Arduino UNO R4 WiFi (D7)

• IN8 connected to:

  • Arduino UNO R4 WiFi (D8)

• C connected to:

  • POWER SUPPLY 5V 5AMP (220V Negative Pole (AC))
  • power 220v (hot wire)

• NO connected to:

  • Heater Element (VCC)
  • 220 fan (L)
  • 220 fan (L)
  • 220 fan (L)
  • 220 fan (L)

DHT11 Humidity and Temperature Sensor

• VDD connected to:

  • Arduino UNO R4 WiFi (5V)

• DATA connected to:

  • Arduino UNO R4 WiFi (D9)

• GND connected to:

  • Arduino UNO R4 WiFi (GND)

MKE-M07 LCD1602 I2C

• 5V connected to:

  • Arduino UNO R4 WiFi (5V)

• GND connected to:

  • Arduino UNO R4 WiFi (GND)

• SDA connected to:

  • Arduino UNO R4 WiFi (A4)

• SCL connected to:

  • Arduino UNO R4 WiFi (A5)

POWER SUPPLY 5V 5AMP

• 12V-24V Output (DC) connected to:

  • Arduino UNO R4 WiFi (5V)

• GND (DC) connected to:

  • Arduino UNO R4 WiFi (GND)

• 220V Negative Pole (AC) connected to:

  • 5V 8Channel Relay (C)

Power 220V

• hot wire connected to:

  • 5V 8Channel Relay (C)

• neutral wire connected to:

  • POWER SUPPLY 5V 5AMP (220V Positive Pole (AC))
  • 220 fan (N)
  • Heater Element (GND)
  • 220 fan (N)
  • 220 fan (N)
  • 220 fan (N)