Circuit Documentation

Summary

This circuit involves an Arduino Nano microcontroller interfacing with multiple sensors, a relay module, a motor driver, a servo motor, and a water pump. The circuit is designed to detect flames using flame sensors and control various actuators based on the sensor inputs.

Component List

1. Arduino Nano

   • Description: A small, complete, and breadboard-friendly board based on the ATmega328P.
   • Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

2. KY-026 Flame Sensor

   • Description: A flame sensor module that can detect fire or other light sources in the wavelength range of 760 nm to 1100 nm.
   • Pins: A0, GND, VCC, D0

3. Micro servo 9G

   • Description: A small servo motor used for precise control of angular position.
   • Pins: GND, +5V, PWM

4. L298N DC motor driver

   • Description: A dual H-Bridge motor driver module that allows control of two DC motors.
   • Pins: OUT1, OUT2, 12V, GND, 5V, OUT3, OUT4, 5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2, ENA, IN1, IN2, IN3, IN4, ENB

5. Relay module 5v-30v

   • Description: A relay module that can be used to control high voltage devices.
   • Pins: common contact, normally open, normally closed, trigger, V-, V+

6. 7805

   • Description: A voltage regulator that outputs a stable 5V from a higher voltage input.
   • Pins: Vin, Gnd, Vout

7. 7.4v Battery

   • Description: A 7.4V battery used as the power source for the circuit.
   • Pins: +, -

8. Rocker switch

   • Description: A switch used to control the power supply to the circuit.
   • Pins: output, input

9. Water pump

   • Description: A small water pump used for liquid transfer.
   • Pins: positive, negative

10. 12V Geared Motor

    • Description: A motor with a gearbox for increased torque.
    • Pins: Terminal 1, Terminal 2

Wiring Details

Arduino Nano

• D2: Connected to D0 of KY-026 Flame Sensor
• D3: Connected to D0 of KY-026 Flame Sensor
• D4: Connected to D0 of KY-026 Flame Sensor
• D5: Connected to trigger of Relay module 5v-30v
• D6: Connected to IN1 of L298N DC motor driver
• D9: Connected to IN2 of L298N DC motor driver
• D10: Connected to IN3 of L298N DC motor driver
• D11/MOSI: Connected to IN4 of L298N DC motor driver
• D12/MISO: Connected to PWM of Micro servo 9G
• VIN: Connected to VCC of KY-026 Flame Sensor, VCC of KY-026 Flame Sensor, VCC of KY-026 Flame Sensor, normally open of Relay module 5v-30v, V+ of Relay module 5v-30v, +5V of Micro servo 9G, output of rocker switch

KY-026 Flame Sensor

• D0: Connected to D2 of Arduino Nano
• D0: Connected to D3 of Arduino Nano
• D0: Connected to D4 of Arduino Nano
• VCC: Connected to output of rocker switch
• GND: Connected to GND of L298N DC motor driver, - of 7.4v battery, V- of Relay module 5v-30v, Gnd of 7805, GND of Micro servo 9G, GND of Arduino Nano, negative of water pump

Micro servo 9G

• PWM: Connected to D12/MISO of Arduino Nano
• +5V: Connected to VIN of Arduino Nano
• GND: Connected to GND of Arduino Nano

L298N DC motor driver

• IN1: Connected to D6 of Arduino Nano
• IN2: Connected to D9 of Arduino Nano
• IN3: Connected to D10 of Arduino Nano
• IN4: Connected to D11/MOSI of Arduino Nano
• OUT1: Connected to Terminal 2 of 12V Geared Motor
• OUT2: Connected to Terminal 1 of 12V Geared Motor
• OUT3: Connected to Terminal 2 of 12V Geared Motor
• OUT4: Connected to Terminal 1 of 12V Geared Motor
• 12V: Connected to + of 7.4v battery, Vin of 7805
• GND: Connected to GND of KY-026 Flame Sensor, - of 7.4v battery, V- of Relay module 5v-30v, Gnd of 7805, GND of Micro servo 9G, GND of Arduino Nano, negative of water pump

Relay module 5v-30v

• trigger: Connected to D5 of Arduino Nano
• normally open: Connected to VIN of Arduino Nano
• V+: Connected to VIN of Arduino Nano
• V-: Connected to GND of KY-026 Flame Sensor, GND of L298N DC motor driver, - of 7.4v battery, Gnd of 7805, GND of Micro servo 9G, GND of Arduino Nano, negative of water pump
• common contact: Connected to positive of water pump

7805

• Vin: Connected to 12V of L298N DC motor driver
• Gnd: Connected to GND of KY-026 Flame Sensor, GND of L298N DC motor driver, - of 7.4v battery, V- of Relay module 5v-30v, GND of Micro servo 9G, GND of Arduino Nano, negative of water pump
• Vout: Connected to input of rocker switch

7.4v Battery

• +: Connected to 12V of L298N DC motor driver, Vin of 7805
• -: Connected to GND of KY-026 Flame Sensor, GND of L298N DC motor driver, V- of Relay module 5v-30v, Gnd of 7805, GND of Micro servo 9G, GND of Arduino Nano, negative of water pump

Rocker switch

• output: Connected to VCC of KY-026 Flame Sensor, VCC of KY-026 Flame Sensor, VCC of KY-026 Flame Sensor, normally open of Relay module 5v-30v, V+ of Relay module 5v-30v, +5V of Micro servo 9G, VIN of Arduino Nano
• input: Connected to Vout of 7805

Water pump

• positive: Connected to common contact of Relay module 5v-30v
• negative: Connected to GND of KY-026 Flame Sensor, GND of L298N DC motor driver, - of 7.4v battery, V- of Relay module 5v-30v, Gnd of 7805, GND of Micro servo 9G, GND of Arduino Nano

12V Geared Motor

• Terminal 1: Connected to OUT2 of L298N DC motor driver, OUT4 of L298N DC motor driver
• Terminal 2: Connected to OUT1 of