Circuit Documentation

Summary

This circuit integrates various sensors and modules with an Arduino UNO and an ESP32 microcontroller. The system includes voltage, current, temperature, and flame sensors, a GSM module, a relay module, and an LCD display. The circuit is designed to monitor environmental parameters and control a fan based on sensor inputs.

Component List

1. Arduino UNO

   • Description: A microcontroller board based on the ATmega328P.
   • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

2. Voltage Sensor

   • Description: Measures voltage levels.
   • Pins: Ground, Phase, Vcc, Out, Gnd

3. Current Sensor 5A

   • Description: Measures current up to 5A.
   • Pins: 1, 2, GND, OUT, VCC

4. Temperature Sensor (LM35)

   • Description: Measures temperature.
   • Pins: +Vs, Vout, GND

5. ESP32 (30 pin)

   • Description: A low-power system on a chip microcontroller with integrated Wi-Fi and dual-mode Bluetooth.
   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, Vin, D23, D22, TX0, RX0, D21, D19, D18, D5, TX2, RX2, D4, D2, D15, 3V3

6. GSM SIM900

   • Description: A GSM module for communication.
   • Pins: A5, A4, A3, A2, A1, A0, 5V, GND, 3.3V, RESET, D0, D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, AREF

7. Relay module 5v-30v

   • Description: A relay module for switching.
   • Pins: common contact, normally open, normally closed, trigger, V-, V+

8. Fan

   • Description: A fan for cooling.
   • Pins: GND, 5V

9. 18650 Li-ion Battery x 2

   • Description: Power source.
   • Pins: +, -

10. Potentiometer

    • Description: A variable resistor.
    • Pins: GND, Output, VCC

11. LCD Display 20x4

    • Description: A 20x4 character LCD display.
    • Pins: LEDK, LEDA, DB7, DB6, DB5, DB4, DB3, DB2, DB1, DB0, E, RW, RS, VO, VDD, VSS

12. KY-026 Flame Sensor

    • Description: Detects flame.
    • Pins: A0, GND, VCC, D0

Wiring Details

Arduino UNO

• 5V: Connected to Vcc of Voltage Sensor, Current Sensor 5A, Potentiometer, Relay module, GSM SIM900, KY-026 Flame Sensor, and +Vs of Temperature Sensor (LM35).
• GND: Connected to Gnd of Voltage Sensor, GND of Current Sensor 5A, Potentiometer, Relay module, GSM SIM900, KY-026 Flame Sensor, and GND of Temperature Sensor (LM35).
• A0: Connected to Out of Voltage Sensor.
• A1: Connected to OUT of Current Sensor 5A.
• A2: Connected to Vout of Temperature Sensor (LM35).
• A3: Connected to A0 of KY-026 Flame Sensor.
• D11: Connected to D0 of KY-026 Flame Sensor.
• D10: Connected to DB7 of LCD Display.
• D9: Connected to DB6 of LCD Display.
• D8: Connected to DB5 of LCD Display.
• D7: Connected to DB4 of LCD Display.
• D6: Connected to E of LCD Display.
• D5: Connected to RS of LCD Display.
• D4: Connected to trigger of Relay module.
• D3: Connected to D2 of GSM SIM900.
• D2: Connected to D3 of GSM SIM900.
• D1: Connected to RX0 of ESP32.
• D0: Connected to TX0 of ESP32.

ESP32 (30 pin)

• Vin: Connected to VDD and LEDA of LCD Display, VCC of Potentiometer, VCC of Current Sensor 5A, Vcc of Voltage Sensor, 5V of Arduino UNO, common contact and V+ of Relay module, + of 18650 Li-ion Battery, 5V of GSM SIM900, VCC of KY-026 Flame Sensor, and +Vs of Temperature Sensor (LM35).
• GND: Connected to VSS, RW, and LEDK of LCD Display, GND of Potentiometer, GND of Current Sensor 5A, Gnd of Voltage Sensor, GND of Arduino UNO, - of 18650 Li-ion Battery, GND of GSM SIM900, GND of Fan, V- of Relay module, GND of KY-026 Flame Sensor, and GND of Temperature Sensor (LM35).

Voltage Sensor

• Out: Connected to A0 of Arduino UNO.

Current Sensor 5A

• OUT: Connected to A1 of Arduino UNO.

Temperature Sensor (LM35)

• Vout: Connected to A2 of Arduino UNO.

KY-026 Flame Sensor

• A0: Connected to A3 of Arduino UNO.
• D0: Connected to D11 of Arduino UNO.

LCD Display 20x4

• DB7: Connected to D10 of Arduino UNO.
• DB6: Connected to D9 of Arduino UNO.
• DB5: Connected to D8 of Arduino UNO.
• DB4: Connected to D7 of Arduino UNO.
• E: Connected to D6 of Arduino UNO.
• RS: Connected to D5 of Arduino UNO.
• VO: Connected to Output of Potentiometer.

Relay module 5v-30v

• trigger: Connected to D4 of Arduino UNO.
• normally open: Connected to 5V of Fan.

GSM SIM900

• D2: Connected to D3 of Arduino UNO.
• D3: Connected to D2 of Arduino UNO.

Fan

• 5V: Connected to normally open of Relay module.

18650 Li-ion Battery x 2

• +: Connected to - of the other 18650 Li-ion Battery.

Documented Code

Arduino UNO Code

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

}

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

}

Additional Documentation

// No additional documentation provided.

This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the microcontroller.