Duration of the online course: 9 hours and 53 minutes
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Build real Arduino skills fast with this free online course—write sketches, wire components, and control LEDs, displays, sensors, and relays. Certificate-ready.
In this free course, learn about
Arduino course roadmap, helpful prerequisites, and the Uno board ecosystem
Arduino Uno hardware/software setup; USB interface for uploading and Serial Monitor use
Arduino IDE features; using Serial.print vs Serial.println for serial output
Number systems basics: hex↔binary conversion and binary-to-decimal interpretation (e.g., 1010=10)
Digital I/O fundamentals: pinMode, digitalWrite, digitalRead; onboard LED pin (typically D13)
Blink sketch and timing basics; using delay(1000) for a 1-second pause
Pulse Width Modulation (PWM) concepts and generating PWM to dim an LED
7-segment display operation, wiring, and showing digits with Arduino
Multiplexing 2-digit 7-seg displays: shared segments, digit enables, and why multiplexing is used
16x2 LCD working principle and using the LiquidCrystal library to display text
Driving 16x2 LCD without a library in 8-bit and 4-bit modes; required OUTPUT pins in 4-bit mode
LCD contrast control: wiring a potentiometer wiper to the VO (V0) contrast pin
Input device logic: pull-up/pull-down resistors; wiring buttons with INPUT_PULLUP (no externals)
Interfacing sensors and actuators: IR proximity sensor input mode and relay control for AC loads safely
About the free online course
Step into robotics and embedded programming by learning how to make a microcontroller interact with the real world. This free online course is designed for beginners who want practical confidence with Arduino—from your first connection to a computer to building small projects that read inputs and drive outputs. You will learn how to move from curiosity to capability by understanding both the hardware you wire and the code you upload.
You will get comfortable with the Arduino development workflow, including using the IDE, sending information through the Serial Monitor, and writing clear logic using timing and core functions. Along the way, you will strengthen the foundational concepts that make electronics easier to reason about, such as number systems, digital patterns, and the idea of turning code into predictable behavior on pins.
Hands-on practice is central. You will start with classic experiments like blinking and dimming LEDs using Pulse Width Modulation, then progress to outputs that feel more like real devices. Learn to display information with 7-segment displays, understand multiplexing to efficiently handle multiple digits, and control text output using a 16x2 LCD. You will also explore different LCD interfacing approaches, including working with and without libraries, so you understand what happens behind the scenes.
On the input side, you will learn reliable techniques to read pushbuttons and sensors using pull-up and pull-down logic to avoid unstable readings. By the end, you will be prepared to connect and read devices like IR proximity sensors, creating the foundation for responsive robotics projects.
Finally, you will bridge the gap from low-power circuits to real-world control by understanding relays and using Arduino to switch higher-power loads safely. With these skills, you will be ready to prototype automation ideas, robotics subsystems, and sensor-driven applications—building a strong base for more advanced electronics, drones, and embedded systems projects.
Course content
Video class: Introduction to Arduino Beginner Course | Syllabus explained | What you will learn..?03m
Exercise: Which prior knowledge is helpful but not mandatory for beginners in an Arduino course?
Video class: Hardware and Software used in this Arduino Beginner Programming Course03m
Exercise: Which interface on Arduino Uno is used to connect to a PC for uploading programs and using the Serial Monitor
Video class: Features of Arduino IDE Explained | Arduino Beginner Course15m
Exercise: Which Arduino function sends data to the Serial Monitor without adding a new line at the end
Video class: Hexadecimal to Binary08m
Exercise: In Arduino digital logic, what decimal number does the binary pattern 1010 represent
Video class: Blinking an LED with Arduino - Arduino for Beginners Tutorial ( Arduino Beginner Course )10m
Exercise: Which Arduino Uno pin typically controls the onboard LED used in the Blink example?
Video class: What is Pulse Width Modulation? How to generate PWM signal ? Pulse Width Modulation Explained06m
Video class: LED dimmer using PWM in Arduino | Arduino Beginner Course08m
Exercise: How do you connect an Arduino Uno to your computer for uploading sketches?
Video class: 7 Segment Display Working Explained10m
Video class: Interfacing 7segment Display with Arduino | Arduino Beginner Course23m
Exercise: How do you upload a sketch to an Arduino Uno from a PC
Video class: 7 Segment Display's Multiplexing Technique Explained10m
Exercise: On an Arduino, how do you correctly multiplex two common-cathode 7-segment displays that share segment pins to show 12?
Video class: Displaying Numbers on 2 Digit 7segment [Multiplexing] with Arduino | Arduino Beginner Course14m
Exercise: Why multiplex two 7-segment displays with Arduino when showing a two-digit number?
Video class: 16x2 LCD Working principle explained05m
Video class: Interfacing 16x2 LCD with Arduino | LiquidCrystal Library Explained Completely22m
Exercise: Which Arduino function creates a 1 second pause in code execution?
Video class: Interfacing 16x2 LCD with Arduino in 8 Bit Mode | No Library Required19m
Exercise: When interfacing a 16x2 LCD in 4-bit mode with Arduino, which pins should be set as OUTPUT using pinMode
Video class: Interfacing 16x2 LCD with Arduino in 4 Bit Mode | No Library Required10m
Exercise: Which LCD pin should the potentiometer wiper connect to for contrast adjustment on a 16x2 LCD with Arduino
Video class: Input devices working logics explained | Pull-up and Pull-down04m
Video class: Interfacing Pushbuttons with Arduino | English12m
Exercise: Best way to wire and read a push button on Arduino without external resistors
Video class: Interfacing IR sensor with Arduino | Infrared Sensor | English09m
Exercise: Which pinMode should you use to read a digital IR proximity sensor reliably and avoid a floating input?
Video class: Relay working principle explained13m
Exercise: Controlling a 110 V AC lamp with Arduino
Video class: Interfacing Relays with Arduino | Control High Power devices with Arduino Uno08m
Exercise: Reading a push button on Arduino Uno
Video class: Interfacing DC Motor with Arduino | Control DC motors using L298N Driver with Arduino19m
Exercise: Why use an L298 H bridge with Arduino to drive a DC motor?
Video class: Matrix Keypad Working Principle Explained Clearly | Interface Matrix Keypad to any Microcontroller07m
Exercise: How does a matrix keypad detect a key press on Arduino?
Video class: Interfacing 4x3 Matrix Keypad with Arduino | Column Scanning Technique12m
Exercise: How do you correctly scan a 4x4 matrix keypad with Arduino using internal pull ups
Video class: Ultrasonic Sensor Working Explained Clearly | HC-SR0409m
Exercise: Arduino basics Ultrasonic HC SR04 Which pin does Arduino read to measure distance
Video class: Interfacing of Ultrasonic sensor with Arduino | HC-SR04 | English13m
Exercise: Which Arduino function measures the HIGH duration of the HC-SR04 ECHO pin in microseconds to compute distance?
Video class: Rotary Encoder Working Explained Clearly | Interface Rotary Encoders to any microcontrollers04m
Exercise: How can an Arduino determine rotation direction from a quadrature rotary encoder
Video class: Interfacing Rotary Encoder with Arduino | Encoder Module17m
Exercise: What PWM value range should the counter be limited to when using analogWrite to dim an LED on an Arduino Uno?
Video class: ADC module working principle explained12m
Exercise: What is the voltage resolution per step of a 10-bit ADC on a 5 V Arduino?
Video class: Interfacing Potentiometer with Arduino | Variable Resistor | English16m
Exercise: What range of values does analogRead return when reading a potentiometer on A0 with a 5V reference?
Video class: LED dimmer with Controllable Potentiometer Using Arduino | PWM | Analog pins | English08m
Exercise: Why was the LED connected to digital pin 6 instead of pin 7 for the dimmer?
Video class: Interfacing LDR with Arduino | Light Dependent Resistor | English12m
Exercise: In an Arduino Uno LDR voltage divider on A0, how does the analogRead value change as light on the LDR increases?
Video class: Interfacing Joystick with Arduino | English18m
Exercise: What value range does analogRead() return on an Arduino Uno?
Video class: Interfacing ADXL335 Accelerometer with Arduino | English16m
Exercise: Which Arduino function reads analog voltages from a 3-axis accelerometer connected to A0, A1, and A2?
Video class: Universal asynchronous receiver-transmitter05m
Video class: HC05 Bluetooth module testing with serial terminal software in PC04m
Video class: Interfacing HC05 Bluetooth Module with Arduino | English09m
Exercise: When using a Bluetooth module to control LEDs from a smartphone, which Arduino function reads the incoming character over the serial connection?
Video class: PLXDAQ Excel Data Logger Working Explained10m
Exercise: Arduino basics: What should you do first to log Arduino data to Excel via a serial terminal?
Video class: Excel Data Logger Using Arduino | No Libraries | PLXDAQ | English11m
Exercise: Initializing Serial Communication on Arduino
Video class: SPI communication working explained12m
Exercise: In SPI communication on Arduino, which line does the master use to select a specific slave device?
Video class: Interfacing 74HC595 Shift Register With Arduino | English24m
Exercise: Which pins on Arduino Uno are used for hardware SPI as master and require a common ground with the slave
Video class: Dot Matrix Display Working Explained18m
Exercise: How can an Arduino efficiently drive an LED dot-matrix display so it looks continuously lit while using few pins?
Video class: Interfacing Dot Matrix Display with Arduino | No Libraries Required | English26m
Exercise: Which interface should you use to control a MAX7219-based LED dot matrix with Arduino and adjust brightness via its intensity register?
Video class: I2C communication protocol working explained12m
Video class: Arduino EEPROM - 24C04 | 24C08 | 24C16 | 24C32 | 24C64 (No Libraries)23m
Exercise: Which sequence correctly writes data to an I2C device using the Arduino Wire library
Video class: PCF8574 GPIO Extender | Arduino (No Libraries)16m
Exercise: What is the primary use of the PCF8574 with Arduino via the I2C two wire interface?
Video class: DS1307 RTC module with Arduino | Real Time Clock ( No Libraries Used )27m
Exercise: Which protocol connects Arduino to the DS1307 real time clock
How do I upload an Arduino sketch and open the Serial Monitor on an Arduino Uno?
Connect the Uno to your computer with a USB cable, select the board and COM port in Arduino IDE, click Upload, then open Serial Monitor from the Tools menu.
How can I wire a push button to Arduino without an external resistor?
Use pinMode(buttonPin, INPUT_PULLUP), connect the button between the input pin and GND, and treat LOW as pressed.
Why is multiplexing used for two 7-segment displays with Arduino?
Multiplexing lets both displays share segment pins, reducing the number of Arduino pins required while alternating them quickly enough to appear continuously lit.
Ready to get started?Download the app and get started today.
Course comments: Arduino for Beginners
rakesh yanadi
better understanding the concepts