Module 7

Arduino IDE: ESP32 Hands-On

Module 7

Which library is used for WiFi on ESP32?

1: Which library is used for WiFi on ESP32?

WiFiESP.h

ESP8266WiFi.h

WiFi.h

Ethernet.h

Which function initializes serial communication?

2: Which function initializes serial communication?

Serial.begin()

Serial.start()

Serial.init()

Serial.open()

The Serial Plotter is mainly used to:

3: The Serial Plotter is mainly used to:

Upload code

Visualize real-time data

Debug syntax

Format EEPROM

What does pinMode(pin, INPUT) do?

4: What does pinMode(pin, INPUT) do?

Sets the pin to HIGH

Configures the pin to read signals

Enables PWM

Sets the pin to analog mode

What type of value does touchRead() return on ESP32?

5: What type of value does touchRead() return on ESP32?

Voltage

Boolean

String

capacitance

What baud rate should match between Arduino and Serial Monitor for proper communication?

6: What baud rate should match between Arduino and Serial Monitor for proper communication?

Any value

Only 9600

Must be the same on both ends

Depends on USB speed

What is macro value of OUTPUT

7: What is macro value of OUTPUT

3

0x03

0

Both 3 pr 0x03

What this code does?int sensorValue = analogRead(A0);

8: What this code does?int sensorValue = analogRead(A0);

Sets pin A0 to output mode

Reads a digital value from pin A0

Reads an analog voltage from pin A0 and stores it in sensorValue

Sends data to the Serial Monitor

The ESP32 microcontroller has how many capacitive touch-sensing GPIO pins:

9: The ESP32 microcontroller has how many capacitive touch-sensing GPIO pins:

1

5

10

All pins can be used

What is the role of WiFiClientSecure in HTTPS communication?

10: What is the role of WiFiClientSecure in HTTPS communication?

It encrypts the WiFi signal

It stores WiFi credentials

It plots secure data

It handles secure HTTP requests

Which programming function loop can be used instead of loop function in Arduino Ide

11: Which programming function loop can be used instead of loop function in Arduino Ide

do-while

if-else

while(1)

switch-case

Which of the following pins on Arduino Uno typically support analogWrite()?

12: Which of the following pins on Arduino Uno typically support analogWrite()?

A0–A5

Pin 13

All digital pins

Only pins labeled with ~

What must happen before the ESP32 can serve the LED control web page?

13: What must happen before the ESP32 can serve the LED control web page?

The Serial Monitor must be open

The ESP32 must connect to a WiFi network

The LEDs must be turned on

The user must press a physical button

How does the user interact with the ESP32 to control the LEDs?