Video interaktif membuat rangkaian deteksi kebocoran gas

Which components are used to build the gas sensor alarm system?

• Arduino Uno R3, Gas Sensor, LED, Resistor, Piezo

• Arduino Mega, Temperature Sensor, LCD Screen, Buzzer

• Raspberry Pi, Motion Sensor, Servo Motor, Speaker

• ESP32, Humidity Sensor, RGB LED, Pushbutton

To which analog pin on the Arduino Uno R3 is the gas sensor's analog output connected?

• A0

• A1

• A3

• A5

Which digital pins on the Arduino Uno R3 are used to control the LED and the Piezo buzzer, respectively?

• Pin 2 for LED, Pin 3 for Piezo

• Pin 0 for LED, Pin 1 for Piezo

• Pin 3 for LED, Pin 2 for Piezo

• Pin 1 for LED, Pin 0 for Piezo

What condition triggers the LED to turn HIGH and the speaker to play a tone in the final corrected code?

• Gas sensor value (Val) is less than 100

• Gas sensor value (Val) is greater than or equal to 20

• Gas sensor value (Val) is equal to 50

• Gas sensor value (Val) is less than 20