pinMode(SWITCH_PIN,OUTPUT);

pinMode(SWITCH_PIN,ANALOGUE);

pinMode(SWITCH_PIN,INPUT);

pinMode(SWITCH_PIN,DIGITAL);

It returns values from 0 to 1023

It returns values from 0 to 255

It measures only digital HIGH/LOW

It outputs a true analogue voltage

Sets pin 8 to 1 when the sensor reading is higher than 700

Prints 700 to the Serial Monitor

Fades an LED on pin 8

Reads a digital signal on A0

A motor driver

A diode in parallel

A resistor in series

A capacitor in series

switchRead = digitalWrite(8)

switchRead = digitalWrite(A0)

switchRead = digitalRead(8)

switchRead = digitalRead(A0)

Pin A0

Pin 13

Pin 5

Pin 8

GND is optional if using USB power

The 3.3V pin can safely power high-current motors directly

The 5V pin can be used to power small sensors and simple modules

VIN always outputs a stable 5V

Use map() to create timing

Use only analogRead()

Use digitalWrite() and delay() in loop()

Use Serial.begin() without any delays

Enables the internal pull-up resistor automatically

Sets pin 4 to output a PWM signal

Sets pin 4 so it can read a digital signal.

Makes pin 4 an analogue input

Creates a variable storing the number that will be used to refer to LED pin

Turns on pin 9.

Defines the PWM frequency

Sets pin 9 to INPUT mode