The Flame Fighter - Useless Machine

The Flame Fighter is a machine designed to address all your nighttime fire predicaments. By simply placing your candle near the machine, the fan spins and rotates to blow out the flame on its own without you wasting your breath!

Using a photoresistor to sense the light, a servo to rotate the fan, and a code to detect the brightness of the flame, the machine performs accordingly to blow out the flame.

• 1 Fan blade
• 1 Arduino Uno
• 1 Photoresistor
• 1 10K OHMs Resistor
• 1 Lighter
• 1 Servo
• 2 Breadboards
• 10+ Breadboard jumper wires
• 1 3-6 Volt motor
• 1 9-Volt Battery
• 1 Battery adapter
• 2 Small Zip ties
• 1 Hot glue gun
• 3 3x6" Wood Panels
• 4 Nails
• 1 Laptop
• 1 USB cable
• 1 Power supply module
• 5 Candles (for testing)
• 1 Glass cup

1. Collect materials
2. Attach the three pieces of wood together according to the picture above using nails
3. Attach wires to the breadboard and Arduino Uno according to the Tinkercad diagram
4. Attach fan blade and 3-6 volt motor to a power supply module
5. Connect the power supply module to the 9-volt battery
6. Attach the breadboard to the back of the wooden structure
7. Attach the photoresistor to the front of the wooden structure according to the height of the candle
8. Attach the fan blade and 3-6 volt motor to the servo wing using zip-ties
9. Hot-glue the servo onto the front of the wooden structure an inch and a half above the photoresistor

Download Arduino ide software by clicking on this link

1. Connect Arduino Uno using a USB cable to the laptop
2. Select Arduino Uno board on Arduino IDE software
3. Paste code into Arduino IDE software
4. Use a sensor monitor on Arduino IDE software to figure out the light value of the room
5. Adjust the value to be a higher value than the outputs in the sensor monitor
6. Verify and upload the code in Arduino IDE

1. Turn on the fan using the power supply module
2. Light candle
3. Move it closer to the wooden structure in front of the photoresist
4. ***The airflow from the fan is concentrated at its edges and not the center, place the candle off the center of the fan.
5. Enjoy

Certain problems were faced throughout the project which either enhanced the final product or simply had no effect on the final product but required a redirection. Initially, the photoresistor was not responsive to light unless in an extremely dark room, however, by adjusting the photoresistor read value, it became possible to use the machine anywhere despite varying light levels. Once the photoresistor started working, another problem that was encountered was the fan. The fan would spin and rotate properly, though the airflow was coming out from the perimeter of the fan rather than the center. This required us to adjust the location of the candle to be placed off the center in order to blow out the candle.