Arduino Firefighter Robot

Ingredients

• 1 piece Arduino Uno R3 (Microcontroller board)
• 2 pcs Servo motor (SG90) (For wheel movement)
• 2 pcs DC motor with wheels (Drive wheels)
• 1 pcs Miniature water pump (For fire suppression)
• 1 pcs IR flame sensor (Detects fire)
• 20 pcs Jumper wires (male‑to‑male) (For prototyping connections)
• 1 pcs Breadboard (Prototype wiring platform)
• 1 set 9V battery and connector (Power supply for the robot)
• 5 pcs Resistors (220Ω) (For LED indicators)
• 2 pcs Red LED (Indicates fire detection)

Instructions

1. Gather Components

   Collect all listed components and verify you have the correct quantities before starting.

   Time: PT15M

2. Assemble Chassis

   Mount the DC motors with wheels onto the robot frame using screws; ensure the wheels rotate freely.

   Time: PT30M

3. Wire Servo Motors

   Place the breadboard on the chassis and connect the two SG90 servos to the Arduino’s PWM pins using jumper wires.

   Time: PT20M

4. Connect Flame Sensor

   Insert the IR flame sensor into the breadboard and wire its VCC, GND, and analog output to the Arduino (e.g., A0).

   Time: PT10M

5. Wire Water Pump via Driver

   Connect the water pump to a transistor driver circuit, then link the driver’s control pin to a digital output on the Arduino.

   Time: PT15M

6. Solder Permanent Connections

   Solder all breadboard connections onto a perfboard for durability, ensuring solid joints and proper insulation.

   Time: PT30M

   Temperature: 350°C

7. Program and Upload Code

   Write Arduino code that reads the flame sensor, lights the LEDs when fire is detected, drives the servos for movement, and activates the pump; upload via the computer.

   Time: PT45M

8. Test Fire‑Suppression Function

   Place a small candle under the robot, power it on, and observe if the sensor triggers the LEDs and water pump correctly.

   Time: PT20M

9. Final Adjustments and Secure Components

   Trim excess wires, secure the perfboard and battery with hot glue, and ensure the pump nozzle is aimed forward.

   Time: PT15M

10. Cleanup and Storage

    Turn off power, unplug the USB, clean the work area, and store unused components in a dry box.

    Time: PT15M

Nutrition Facts

0

Protein

0g

Carbohydrates

0g

Fat

0g

Fiber

0g

Ingredient Substitutions

• Instead of Arduino Uno R3: Arduino Nano, Arduino Mega
• Instead of Servo motor (SG90): Micro servo, continuous rotation servo
• Instead of DC motor with wheels: gear motor
• Instead of Miniature water pump: DIY peristaltic pump
• Instead of IR flame sensor: temperature sensor
• Instead of Jumper wires (male‑to‑male): breadboard wires
• Instead of Breadboard: perfboard
• Instead of 9V battery and connector: LiPo battery
• Instead of Resistors (220Ω): any 220Ω resistor
• Instead of Red LED: any LED

Equipment Needed

• Soldering iron
• Wire stripper/cutter
• Screwdriver set
• Multimeter (optional)
• Computer with Arduino IDE
• Heat‑shrink tubing (optional)
• Small pliers (optional)

Critical Steps — Do Not Skip

• Solder Permanent Connections
• Test Fire‑Suppression Function

Chef Tips from the Video

• Use heat‑shrink tubing on all solder joints for durability.
• Label each wire with colored tape to simplify debugging.

Troubleshooting

Storage

Refrigerator: Not applicable – keep electronics in a dry, cool place away from moisture.

Freezer: Do not store in freezer; extreme cold can damage batteries and components.

Room temperature: Store assembled robot in a sealed container at room temperature, away from direct sunlight.

Make-Ahead Tips

• Program and test the Arduino code before soldering permanent connections.
• Pre‑assemble the chassis and secure motors before wiring.