Measure light intensity
Detect motion
Measure temperature and humidity
Monitor air pressure
delay(1);
delay(100);
delay(1000);
delay(60);
A0
GND
RST
Vin
14
16
20
32
The frequency of data transmission in kilobytes
The number of bits transmitted per second
The power consumption of the device
The range of the communication
MQ-135
BMP280
DS18B20
PIR sensor
To generate a PWM signal
To produce a sound on a buzzer with a specific frequency
To control the brightness of an LED
To read analog values
tone(pin, frequency, duration)
tone(pin, duration, frequency)
tone(frequency, pin, duration)
tone(pin)
1 Hz to 1 kHz
31 Hz to 65535 Hz
100 Hz to 10 kHz
500 Hz to 1 MHz
Servo.h
Motor.h
Wire.h
LCD.h
0 to 90 degrees
0 to 180 degrees
0 to 360 degrees
-90 to 90 degrees
servo.attach()
servo.write()
servo.move()
servo.setPosition()
Analog pins
PWM-enabled digital pins
Ground pins
Interrupt pins
LiquidCrystal.h
LCDDriver.h
Display.h
It initializes the LCD with the number of columns and rows.
It prints a message to the LCD.
It clears the LCD display.
It changes the LCD backlight.
Use lcd.setCursor(0, 0) and lcd.print("Text").
Use lcd.begin(0, 0) and lcd.display("Text").
Use lcd.print(0, "Text")
Use lcd.text("Text", 0)
Match the following Internet security threats with their definitions.
A-1, B-2, C-3, D-4
A-4, B-3, C-1, D-2
A-3, B-4, C-2, D-1
A-2, B-1, C-4, D-3
Match the cryptographic attacks with their definitions.
1 → D, 2 → B, 3 → C, 4 →A
1 → C, 2 → A, 3 → B, 4 → D
1 → B, 2 → D, 3 → A, 4 → C
1 → A, 2 → D, 3 → B, 4 → C
