This course provides a structured introduction to embedded systems, electronics, and low-level microcontroller programming using the ESP32-S3 platform. It is designed for beginners who want to understand both the theoretical foundations of electronics and the practical development of real-world embedded applications with ESP-IDF.
The course is divided into 8 lectures, progressing from basic electrical concepts to multitasking, networking, and wireless communication on the ESP32-S3.
- Course Overview
- Curriculum
- Lecture 1 — Foundations
- Lecture 2 — ESP-IDF Platform
- Lecture 3 — GPIO, Sensors & Motors
- Lecture 4 — Displays & Devices
- Lecture 5 — Communication Protocols
- Lecture 6 — FreeRTOS & Memory
- Lecture 7 — Wi-Fi Communication
- Lecture 8 — Bluetooth & BLE
- Prerequisites
- Learning Path
| Category | Details |
|---|---|
| 📚 Lectures | 8 structured modules |
| 🔌 Hardware | ESP32-S3 Development Board |
| 💻 Framework | ESP-IDF |
| 🎯 Level | Absolute Beginner → Advanced Embedded |
| ⚙️ Languages | C / C++ |
| 📡 Protocols | UART · SPI · I²C · Wi-Fi · Bluetooth |
| 🧠 Topics | GPIO · RTOS · Networking · Drivers · Memory |
This lecture starts with the fundamentals of electricity and electronics, then gradually introduces semiconductor devices and microcontrollers.
- Static electricity and electric charge
- Voltage, current, resistance, and power
- Ohm’s Law and circuit analysis
- Series and parallel circuits
- Conductors, insulators, and semiconductors
- Diodes and transistors
- Digital vs analogue signals
- Introduction to embedded systems
- What is a microcontroller?
- ESP32-S3 architecture overview
Learn how to configure the ESP-IDF development environment and write your first ESP32-S3 applications.
- Exploring the ESP32 family and ESP32-S3 features
- Installing and configuring ESP-IDF
- Flashing firmware to the ESP32-S3
- Project structure in ESP-IDF
app_main()entry point- Variables and data types
intfloatboolchar
- Operators and expressions
- Control flow
if / elseswitchforwhile
Learn how to interface the ESP32-S3 with external hardware using GPIO, ADC, PWM, and drivers.
- GPIO input and output
gpio_set_level()andgpio_get_level()- Pull-up and pull-down resistors
- ADC analogue input
- PWM using LEDC
- PWM frequency and duty cycle
- LEDs and brightness control
- Buzzers and tone generation
- Push buttons
- LDR (light sensor)
- Flame sensor
- Obstacle avoidance sensor
- Ultrasonic distance sensor (HC-SR04)
- DC motors with L298N driver
- PWM speed control
- Direction control
- Servo motor control
- Stepper motor basics
- Brushless DC motors (ESC control)
Learn how to interface common display modules with the ESP32-S3.
- 7-segment displays
- Common anode and common cathode
- Multiplexing
- MAX7219 LED dot matrix
- LCD 16×2 displays
Understand how embedded systems communicate with peripherals and other devices.
| Protocol | Speed | Wires | Common Use |
|---|---|---|---|
| UART | Up to 115200+ baud | TX/RX | Debugging, modules |
| I²C | 100–400 kHz | SDA/SCL | Sensors, displays |
| SPI | Up to 10+ MHz | MOSI/MISO/SCK/CS | Displays, SD cards |
- UART communication
- Serial debugging
- I²C master communication
- SPI communication
Learn multitasking, task scheduling, and memory management on the ESP32-S3.
- Tasks and multitasking
- Task priorities
- Delays and timing
- Queues
- Semaphores
- Mutexes
- Dual-core processing basics
- Stack vs heap
- SRAM and Flash memory
- Memory regions on ESP32-S3
- Dynamic memory allocation
- PSRAM basics
Build network-enabled embedded applications using the ESP32-S3 Wi-Fi capabilities.
- Wi-Fi station mode
- Access Point (AP) mode
- Connecting to a router
- TCP/IP basics
- HTTP server implementation
- HTTP request methods
GETPOST
- JSON data handling
- REST APIs
- Wi-Fi event handling
Learn wireless short-range communication using Bluetooth Classic and BLE.
- Bluetooth Classic overview
- Bluetooth Low Energy (BLE)
- BLE services and characteristics
- ESP32-S3 BLE server
- ESP32-S3 BLE client
- Sending sensor data over BLE
- Mobile app communication
- Wireless device control
- No prior programming experience required
- ESP32-S3 development board
- USB-C cable
- Breadboard and jumper wires
- Basic electronics components
- LEDs
- Resistors
- Push buttons
- Buzzers
- Sensors and modules used throughout the course
- VS Code installed
- ESP-IDF installed and configured
Each lecture builds directly on the previous one.
[L1] Electricity & Electronics ↓[L2] ESP-IDF & C Programming Basics ↓[L3] GPIO · Sensors · Motors ↓[L4] Displays & External Devices ↓[L5] Communication Protocols ↓[L6] FreeRTOS & Memory Management ↓[L7] Wi-Fi Networking ↓[L8] Bluetooth & BLE
- Lecture 1 builds the electronics foundation needed for embedded systems.
- Lecture 2 introduces ESP-IDF and low-level programming concepts.
- Lecture 3 focuses on hardware interfacing and control.
- Lecture 4 introduces display technologies and visual output.
- Lecture 5 teaches device communication protocols.
- Lecture 6 explains multitasking and memory management.
- Lecture 7 enables internet-connected embedded applications.
- Lecture 8 introduces wireless communication using Bluetooth and BLE.
By the end of this course, students will be able to:
- Understand electronics fundamentals
- Program the ESP32-S3 using ESP-IDF
- Interface sensors, displays, and motors
- Use communication protocols like UART, SPI, and I²C
- Build multitasking applications with FreeRTOS
- Create Wi-Fi and BLE-enabled embedded systems
- Develop real-world IoT applications
If you find this course helpful and would like to support its development, you can contribute via PayPal:
PayPal: alitighiouart2001@gmail.com
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