Microcontroller Tutorials with Code from Scratch
Controllerstech.com is dedicated to teaching STM32, ESP32, and embedded systems through practical, hands-on tutorials. All examples are built from scratch using datasheets and reference manuals, and every project is tested on real hardware to ensure accuracy and reliability. The goal is to help you gain complete control, deep understanding, and the confidence to build real-world embedded applications.
STM32 LATEST TUTORIALS
STM32 Blink LED — First Project with CubeMX and CubeIDE
STM32 Modbus TCP Server – Read Discrete Inputs with Mongoose
Modbus TCP Protocol Explained – Frame Structure, MBAP Header & Function Codes
STM32 FreeRTOS Stack Management: Monitor Usage & Detect Overflow
STM32 FreeRTOS Software Timers: Periodic & One-Shot with CMSIS-OS V2
STM32 Mongoose with W5500 – Ethernet on Any STM32 MCU
STM32 Fixed Memory Pool for Networking using Mongoose and O1heap
STM32 FreeRTOS Event Flags: osFlagsWaitAll, WaitAny & ISR Callbacks
STM32 Real-Time Graph using Mongoose Ethernet
ESP32 LATEST TUTORIALS
ESP32 UART Interrupt Mode with ESP-IDF — UART Events & FreeRTOS
ESP32 FreeRTOS Multitasking Project: ADC, UART & LED Tasks
ESP32 FreeRTOS: Suspend, Resume & Delete Tasks (ESP-IDF)
ESP32 FreeRTOS Software Timers & Task Notifications
ESP32 FreeRTOS Queues, Semaphores, Mutexes & Event Groups
ESP32 FreeRTOS Task Priority & Stack Size: Full Guide
FreeRTOS ESP32 Scheduler: Task States & Context Switching
FreeRTOS ESP32 Tutorial: Tasks, Scheduler & xTaskCreate
ESP32 MQTT Client: Publish and Subscribe to Topics Using Espressif IDE
ESP32 WiFi Station Mode with ThingSpeak Data Logging Using Espressif IDE
ARDUINO LATEST TUTORIALS
FreeRTOS Tutorial on Arduino (Part 7): Event Groups | Multi-Event Synchronization
FreeRTOS on Arduino (Part 6): Using Interrupts in FreeRTOS
FreeRTOS on Arduino (Part 5): Semaphores and Mutex Explained with Practical Examples
FreeRTOS on Arduino (Part 4): Inter Task Communication with Queues
FreeRTOS on Arduino (Part 3): vTaskDelay vs vTaskDelayUntil and Software Timers
FreeRTOS on Arduino (Part 2): Task Scheduling on Arduino – Tasks, Priorities & Time Slicing
FreeRTOS on Arduino (Part 1): Simple Multitasking
Arduino ILI9341 (PART 2): Build an MP3 Music Player with DFPlayer Mini
Arduino ILI9341 Touchscreen Tutorial: XPT2046 Wiring, Graphics, Calibration & UI
WS2812 Arduino Tutorial: NeoPixel Ring Wiring, Effects & Animations
TIVA C (TM4C123G) LATEST TUTORIALS
TM4C123G ADC Multiple Channels Tutorial: How to read 4 Analog Inputs
How to Use ADC on TM4C123G LaunchPad: Complete Step-By-Step Guide
How to Interface SSD1306 0.96” OLED Display with TM4C123G Tiva C: Text, Shapes, and Animations
How to Interface LCD1602 with TM4C123G Tiva C Using I2C (Full Guide with Code)
TM4C123G SPI Tutorial: Configure SSI0 & Read ADXL345 with TivaWare
I2C in TM4C123G Tiva C – How to Use I2C Peripheral with TivaWare
TM4C123G UART Tutorial (PART 2): Use Interrupt to Receive Data and Control LEDs
TM4C123G UART Tutorial (PART 1) – How to Use UART and Virtual COM Port in Tiva C
TM4C123 GPIO External Interrupts (Using TivaWare in Code Composer Studio)
TM4C123 GPIO Tutorial – Digital Input and Output using Tiva C LaunchPad
AVR LATEST TUTORIALS
AVR #8. I2C Master PART 4 || Read data from Slave
AVR #7. I2C Master PART 3 || Interface LCD1602 via I2C
AVR #6. I2C Master PART 2 || comm. with Slave Device
AVR #5. I2C Master PART 1 || Configuration
AVR #4. How to receive data via UART || Interrupt
AVR #3. How to Configure UART & Send Data
AVR #2. How to use input button || Ext. Interrupt
