Smart Lock IoT System Using the Arduino Platform

You will learn how to build an IoT system through an actual project, covering Arduino, sensor control, and UI development using Node-RED.

--- Learning a skill is about reclaiming the options in your life --- You may have connected sensors to an ESP32 development board before, but the process of turning an experiment made with jumper wires into a finished device can feel daunting. There is plenty of information online about circuit design, PCB manufacturing, sensor control, and BLE/Wi-Fi communication. However, connecting these scattered pieces of information to complete a functional board requires a lot of trial and error. In this course, you will design and build an ESP32-based sensor board yourself. You will configure power circuits and firmware download circuits, connect temperature, humidity, and light sensors, and then design the PCB using KiCad to place an actual manufacturing order. Once the board is complete, you will upload firmware and transmit sensor data externally via BLE and Wi-Fi. By the end of the course, you will move beyond simply assembling development boards and sensor modules to understanding and modifying circuits and PCBs for your own purposes. The project completed in this course can serve as a starting point for new projects such as environmental monitoring devices, smart home gadgets, educational kits, and IoT prototypes. Even in an era where generative AI rapidly creates digital content, physical information from the real world—such as temperature, humidity, light, and movement—can only be obtained through sensors and hardware. The ability to collect data with a device you built yourself and connect it to a network provides the power to turn ideas into real-world systems. This course is helpful for the following people: * Those who have used Arduino or ESP32 development boards but are new to PCB design * Those who want to turn a sensor project made with jumper wires into a single integrated board * Those who want to learn KiCad by following a real ESP32 project * Those who want to build a device that collects sensor data and transmits it via BLE and Wi-Fi * Makers and educators looking to develop environmental monitoring, smart home, or educational hardware * Aspiring entrepreneurs preparing their own IoT products or prototypes * Developers and content creators who want to analyze and process real-world data or use it for AI models Move from being someone who uses development boards to someone who designs their own. This course is not just about how to use sensors. It is a class where you experience the entire process of turning an idea into a circuit, a circuit into a PCB, and connecting the finished hardware to a network.

This course aims to help learners who are new to ESP32 and IoT development master everything from environment setup and language basics to hardware control and RTOS utilization. The main objectives of this course are as follows: - Acquire the ability to use the ESP32 development environment and basic tools - Understand the C language and ESP-IDF structure - Understand FreeRTOS tasks and basic synchronization methods - Enable hardware control through GPIO, I2C, SPI, and UART - Understand storage and memory structures and implement simple persistent data storage

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