How to Interface SHT21 Sensor with STM32 using I2C (Step-by-Step with Code and Circuit Diagram)
In this guide, you’ll learn how to interface the SHT21 sensor with an STM32 microcontroller…
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
Interfacing MFRC522 RFID Module with STM32 using SPI
This tutorial explains how to connect the MFRC522 RFID reader to STM32 via SPI, read…
STM32 IoT Tutorial (Part 5): MQTT Subscribe with ESP8266, DMA & FreeRTOS
In this STM32 IoT tutorial, we show how to subscribe to MQTT topics using ESP8266…
STM32 IoT with ESP8266 (Part 4): Publish MQTT messages with RTOS
This tutorial shows how to connect STM32 with ESP8266 and use FreeRTOS to publish MQTT…
STM32 IoT with ESP8266 (Part 3): MQTT Connect and Publish messages
This tutorial shows how to implement MQTT publish on STM32 using the ESP8266 Wi-Fi module….
STM32 IoT with ESP8266 (Part 2): – Send Sensor Data to ThingSpeakCloud
STM32 ESP8266 ThingSpeak Tutorial – Send Sensor Data to Cloud In the previous tutorial, we…
STM32 IoT with ESP8266 (Part 1): Connect STM32 to WiFi and Obtain IP Address
Learn how to connect STM32 to WiFi using ESP8266. Step-by-step IoT tutorial with AT commands,…
Interface R307 Fingerprint Module with STM32 (UART Tutorial)
This tutorial explains how to interface the R307 fingerprint sensor with STM32 using UART. Learn…
ESP32 LATEST TUTORIALS
FreeRTOS on ESP32 (PART 5): Software Timers and Task Notifications Explained
Learn how to use FreeRTOS Software Timers and Task Notifications on ESP32 with ESP-IDF. Understand…
FreeRTOS on ESP32 (PART 4): Inter-Task Communication Explained | Queues, Semaphores, and Event Groups
In this fourth part of the ESP32 FreeRTOS series, we’ll learn how tasks communicate and…
FreeRTOS on ESP32 (PART 3): Task Priority and Stack Management Explained
In this tutorial, we explore task priorities and stack management. How priority affects scheduling, how…
FreeRTOS on ESP32 (PART 2): Understanding the Scheduler and Task Management
Understand how the ESP32 FreeRTOS scheduler manages tasks efficiently across dual cores. Learn about time…
FreeRTOS on ESP32 (PART 1): Introduction to FreeRTOS and Task Management
Get started with FreeRTOS on ESP32 using ESP-IDF. Learn how tasks, priorities, and the scheduler…
ESP32 MQTT Client: Publish and Subscribe to Topics Using Espressif IDE
Learn how to implement MQTT on ESP32 using Espressif IDE. Subscribe to MQTT topics, publish…
ESP32 WiFi Station Mode with ThingSpeak Data Logging Using Espressif IDE
Learn how to connect ESP32 to WiFi in station mode and log data to ThingSpeak…
ESP32 SPI LCD Touch Interface | Add Touch to Your Display
Learn how to add a touch interface to an SPI LCD using ESP32. Step-by-step guide…
ARDUINO LATEST TUTORIALS
How to Interface I2C LCD1602 Display with Arduino (With Custom Characters)
Learn how to use I2C LCD1602 with Arduino to display text, numbers, scrolling messages, and…
Arduino External Interrupts Guide: How to Use INT0 & INT1 Pins for Responsive Projects
This tutorial explains how to use external interrupts in Arduino to make your projects respond…
Arduino PWM and analogWrite() Explained: A Complete Beginner’s Guide
This beginner-friendly guide explains how PWM (Pulse Width Modulation) works in Arduino and how to…
Mastering Arduino’s delayMicroseconds() Function: A Practical Guide
Master microsecond delays in Arduino using delayMicroseconds(). Discover how to create precise timing for pulses,…
Complete Arduino I2C Tutorial with Examples: Wire Library & Projects
Learn how to use I2C communication in Arduino. Understand master-slave setup, Wire library functions, I2C…
Arduino ADC and analogRead() Explained – Read Analog Voltage Easily
Understand how Arduino converts analog signals into digital values using the ADC and analogRead(). Learn…
Arduino UART Tutorial: Step-by-Step Guide to Serial Communication
This Arduino UART tutorial teaches you step-by-step how to use serial communication. Learn to send…
Arduino digitalWrite() and digitalRead() Tutorial
A quick guide to using digitalWrite() and digitalRead() in Arduino to control LEDs, read buttons,…
TIVA C (TM4C123G) LATEST TUTORIALS
TM4C123 GPIO External Interrupts (Using TivaWare in Code Composer Studio)
This tutorial explains how to set up and use GPIO interrupts on the TM4C123 LaunchPad….
TM4C123 GPIO Tutorial – Digital Input and Output using Tiva C LaunchPad
This TM4C123 GPIO tutorial explains how to configure digital input and output on the Tiva…
TM4C123G Delay Tutorial – Using SysCtlDelay and SysTick Timer
This tutorial explains how to create precise delay functions on the TM4C123G microcontroller using SysCtlDelay…
TM4C123G Clock Setup Tutorial – Configure System Clock with PLL
TM4C123G Clock Setup Tutorial – Configure System Clock with PLL The system clock is the…
TM4C123G LaunchPad Tutorial: Setup CCS Studio and Build Your First Program
Step-by-step guide to blink the on-board LED on the TM4C123G LaunchPad using Code Composer Studio….
AVR LATEST TUTORIALS
AVR #8. I2C Master PART 4 || Read data from Slave
This tutorial covers how to use the AVR MCU as the I2C Master and read…
AVR #7. I2C Master PART 3 || Interface LCD1602 via I2C
This tutorial covers how to use the AVR MCU as the I2C Master and send…
AVR #6. I2C Master PART 2 || comm. with Slave Device
This tutorial covers how to configure the AVR MCU as the I2C Master. We will…
AVR #5. I2C Master PART 1 || Configuration
This tutorial covers how to configure the AVR MCU as the I2C Master. We will…
AVR #4. How to receive data via UART || Interrupt
This tutorial covers how to configure UART in AVR MCU, and how to receive the…
AVR #3. How to Configure UART & Send Data
This tutorial covers how to configure UART in AVR MCU, and how to transmit a…
AVR #2. How to use input button || Ext. Interrupt
This tutorial covers how to read the Input button in AVR with and without using…
ATtiny817 Xplained mini || Clock setup || LED Blink
This tutorial covers how to setup the first project in the microchip atudio for the…