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Overview Power outages are one of the main problems for computers and electrical systems. Sometimes there is data and information in your system that you do not want to be deleted with a power outage. If you do not want your data and information to be lost when the power supply is disconnected, a simple way is to save your data to EEPROM memory.In some projects, such as a 3D printer, when the system is reset, the relevant data can be stored in EEPROM memory to calibrate the equipment and initialize it. ...

Overview A potentiometer is a device that can change its resistance by moving a contact along a fixed resistor. It has three terminals: one connected to each end of the resistor and one connected to the movable contact. By adjusting the position of the contact, the potentiometer can divide the input voltage into different output voltages [Read more in Wikipedia]. Potentiometers work by creating a voltage drop across the resistor that is proportional to its length. For example, if the input voltage is 10...

Introduction RFID, which stands for radio frequency identification, enables data reading and identification of unique tags using radio waves. RFID modules operate on specific frequencies, requiring tags that match the reader module's frequency. In this article, we will design and implement a simple identification system using a 125KHz RFID module and the Wiegand protocol. Tip While the RFID module used in this article shares similarities in shape and structure with the RDM6300 RFID reader m...

Introduction Welcome to our step-by-step tutorial on ESP32CAM! Are you curious about the exciting world of the Internet of Things (IoT) and eager to level up your video skills? In this comprehensive tutorial, we’ll get to know the ESP32CAM module. Whether you're a tech enthusiast, a student, or a developer with a passion for IoT, this tutorial will equip you with the knowledge and skills needed to bring your related projects to life. We'll walk you through every step, from interfacing the ESP32CAM module ...