Arduino Questions and Answers

IOT Questions and Answers – Arduino

This set of IOT Multiple Choice Questions & Answers (MCQs) focuses on “Arduino”.

1. Does the level shifter converts the voltage levels between RS-232 and transistor-transistor logic.
a) True
b) False

Explanation: Various blocks work on different voltage levels, hence level shifters are needed in multi-design. As a result, when a signal transitions from one voltage domain to another, this is required, especially when the signal transitions from low to high level.

2. Which is the software or a programming language used for controlling of Arduino?
a) Assembly Language
b) C Languages
d) Any Language

Explanation: Any programming language for a compiler that produces binary machine code for the target processor can be used to write an Arduino application.

3. Do Arduino provides IDE Environment?
a) True
b) False

Explanation: It comes with a code editor that enables text cutting and pasting, text finding and replacement, automated indenting, brace matching, and syntax highlighting, as well as a one-click compilation and upload mechanism for Arduino projects.

4. A program written with the IDE for Arduino is called _________
a) IDE source
b) Sketch
c) Cryptography
d) Source code

Explanation: Sketches are saved as text files with the extension.ino on the development computer. Pre-1.0 Arduino software (IDE) saved sketches with the.pde extension.

5. Arduino IDE consists of 2 functions. What are they?
a) Build() and loop()
b) Setup() and build()
c) Setup() and loop()
d) Loop() and build() and setup()

Explanation: When a sketch starts after power-up, Setup() is called once in the programme. It’s where the sketch’s variables, input and output pin modes, and other libraries are set up.
After setup() has been called, the loop() method is called continuously in the main programme. It is in charge of the board until it is turned off or reset.

6. How many digital pins are there on the UNO board?
a) 14
b) 12
c) 16
d) 20

Explanation: It has 14 digital input/output pins, including 6 PWM output pins, 6 analogue inputs, a USB connection, a power port, and a reset button, among other features.

7. _________ board allows sewn into clothing.
a) UNO
b) RedBoard
c) LilyPad
d) Mega

Explanation: LilyPad was cleverly designed with wide connection pads and a flat back to allow conductive thread to be inserted into garments.

8. How many analog pins are used in Arduino Mega board?
a) 16
b) 14
c) 12
d) 8

Explanation: It contains a large number of digital input/output pins, 14 of which can be used as PWM outputs, 16 analogue inputs, a USB port, a power jack, and a reset button.

9. Which board is first to use microcontroller within build USB?
a) LilyPad
b) UNO
c) RedBoard
d) Leonardo

Explanation: The Leonard is Arduino’s initial development board with a single microprocessor and USB port. This means it can be less expensive and easier to use. Additionally, code libraries are available that allow the board to duplicate a computer keyboard and other functions.

10. ___________ are pre built circuit boards that fit on top of Android.
a) Sensor
b) Data types
c) Breadboard
d) Sheilds

Explanation: Shields are pre-built circuit boards that go on top of the board and add features such as motor control, internet connectivity, and mobile hotspots.

11. How many types of arduinos do we have?

a) 5
b) 6
c) 8
d) 6

Explanation: There are four Arduino boards and four Arduino shields that fit on top of Rf transmitter boards to provide features like as internet connectivity, motor control, and LCD screen control.

12. What is the microcontroller used in Arduino UNO?
a) ATmega328p
b) ATmega2560
c) ATmega32114
d) AT91SAM3x8E

Explanation: ATmega328p is a microcontroller which is 32KB of flash ROM and 8-bit microcontroller.

13. What does p refer to in ATmega328p?
a) Production
b) Pico-Power
c) Power-Pico
d) Programmable on chip

Explanation: Picopower technology reduces power usage by integrating advanced technologies like as multiple clock domains, DMA, and event systems.

14. Arduino shields are also called as _________
a) Extra peripherals
b) Add on modules
c) Connectivity modules
d) Another Arduinos

Explanation: Shields are add-on modules that can be connected to Arduino boards. An I2C serial bus could be used to separately address many, possibly stacked shields.

15. What is the default bootloader of the Arduino UNO?
a) Optiboot bootloader
b) AIR-boot
c) Bare box
d) GAG

Explanation: The optiboot bootloader will consume 512 bytes, leaving 32256 bytes available for application code. Because of its small size, it allows for a bigger uploadable sketch size.

Arduino is an open-source electronics platform that uses simple hardware and software to make it easy to use. Arduino boards can take inputs – such as light from a sensor, a finger on a button, or a Twitter message – and convert them to outputs – such as turning on an LED, operating a motor, or publishing anything online. It’s true that the Arduino Mega 2560 can handle 14 stepper motors, but it can do a lot more than that. Remember that controlling a motor only requires two outputs, therefore divide the number of outputs by two to reach the maximum number without using a port expander. Arduino isn’t a microcontroller or a microprocessor in the usual sense.

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