Step-by-Step Tutorials

Learn Embedded Systems & IoT

Master communication protocols, IoT development, RTOS, and industrial automation with hands-on tutorials built for all experience levels.

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Category 01

📡 Communication Protocols

Master the serial and network protocols that connect every embedded system and IoT device — from hardware-level UART to industrial Modbus and cloud-ready MQTT.

📊
Beginner

SPI Communication

Serial Peripheral Interface fundamentals, master-slave configuration, and practical sensor interfacing.

  • SPI bus architecture & signals (MOSI, MISO, SCK, CS)
  • Clock polarity (CPOL) and phase (CPHA) modes
  • Interfacing displays, flash memory, and sensors
  • Code examples for Arduino and STM32
🔗
Beginner

I2C Protocol

Inter-Integrated Circuit communication — multi-device addressing, arbitration, and real-world troubleshooting.

  • I2C protocol fundamentals & 7-bit addressing
  • Multi-master bus arbitration
  • Pull-up resistor calculation
  • Reading sensors: BME280, MPU6050, OLED displays
💬
Beginner

UART Serial Communication

Asynchronous serial communication — baud rate, framing, RS-232/RS-485 standards, and debugging techniques.

  • UART frame structure: start bit, data, parity, stop
  • Baud rate configuration and error tolerance
  • RS-232 vs RS-485 — voltage levels and multi-drop
  • Hardware flow control (RTS/CTS)
🚗
Intermediate

CAN Bus Protocol

Controller Area Network — the standard for automotive and industrial multi-node communication.

  • CAN frame structure and bit stuffing
  • Message arbitration and priority
  • Error detection and fault confinement
  • CAN FD — flexible data-rate extension
🏭
Intermediate

Modbus Protocol

The most widely deployed industrial protocol — Modbus RTU, ASCII, and TCP/IP for SCADA integration.

  • Modbus RTU vs ASCII vs TCP
  • Function codes, coils, and holding registers
  • Master-slave request/response structure
  • Industrial SCADA integration examples
📱
Intermediate

MQTT for IoT

Publish-subscribe messaging for constrained IoT devices — brokers, QoS levels, and cloud connectivity.

  • Publish-subscribe architecture & topic hierarchy
  • QoS levels 0, 1, 2 — trade-offs explained
  • Mosquitto broker setup and configuration
  • ESP32 MQTT client with TLS security

Category 02

💻 Embedded Systems Fundamentals

Core skills for every firmware engineer — from understanding microcontroller architecture to designing power-efficient, real-time, and secure embedded applications.

🔧
Beginner

Microcontroller Basics

Introduction to MCU architecture — GPIO, timers, ADC, interrupts, and your first firmware project.

  • MCU architecture: CPU, RAM, Flash, peripherals
  • GPIO input/output and pull-up/pull-down resistors
  • Timer configuration and PWM output
  • ADC sampling and voltage measurement
⚙️
Intermediate

PWM & Motor Control

Pulse Width Modulation for DC motors, servos, stepper motors, and LED dimming applications.

  • PWM frequency and duty cycle fundamentals
  • DC motor speed control with H-bridge
  • Servo motor position control (50 Hz, 1–2 ms)
  • Stepper motor microstepping drivers
🔋
Advanced

Low Power Design

Techniques for ultra-low power embedded systems — sleep modes, peripheral gating, and battery life calculation.

  • Sleep, Stop, and Standby power modes
  • RTC wake-up and autonomous peripheral operation
  • Dynamic voltage and frequency scaling (DVFS)
  • Battery life estimation and profiling tools
🛠️
Advanced

RTOS Fundamentals

Real-Time Operating Systems for deterministic embedded applications — FreeRTOS tasks, queues, and synchronisation.

  • Preemptive vs cooperative scheduling
  • FreeRTOS tasks, priorities, and stack sizing
  • Queues, semaphores, and mutexes
  • ISR-safe API and deferred interrupt handling
🔐
Advanced

Embedded Security

Security fundamentals for connected devices — cryptography, secure boot, and vulnerability prevention.

  • AES encryption and TLS on embedded devices
  • Secure boot and hardware root of trust
  • Firmware update security and code signing
  • Common attack vectors and mitigations
🐛
Intermediate

Debugging Techniques

Professional debugging tools and strategies — logic analyser, oscilloscope, JTAG, and systematic fault finding.

  • SWD/JTAG step-through debugging with GDB
  • Logic analyser protocol decoding
  • Oscilloscope timing measurements
  • Hard fault analysis and stack trace recovery

Recommended Learning Paths

Not sure where to start? Follow a curated path matched to your experience level and goal.

🌱 Beginner Path

Foundations of Embedded IoT

~6–8 hours total
  • UART Serial Communication
  • I2C Protocol
  • SPI Communication
  • Microcontroller Basics
  • GPIO & Peripheral Control
🚀 Intermediate Path

IoT Developer

~12–15 hours total
  • MQTT for IoT
  • ESP32 WiFi/BLE Connectivity
  • Modbus Protocol
  • Cloud Platform Integration
  • Remote Monitoring System
🏭 Advanced Path

Industrial Automation

~15–18 hours total
  • RTOS Fundamentals
  • CAN Bus Protocol
  • Low Power Design
  • Embedded Security
  • Protocol Converters