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Arduino is an open-source electronics platform widely used in IoT and cloud computing laboratories for prototyping embedded systems and smart devices. It consists of a microcontroller-based development board and an integrated development environment (IDE) that allows users to write, compile, and upload code to the board. In IoT laboratories, Arduino serves as a fundamental building block for sensing, data acquisition, and device control applications. The core of an Arduino board is a microcontroller, such as the ATmega328P in Arduino Uno, which executes programmed instructions. It provides digital input/output pins, analog input pins, power pins, and communication interfaces such as UART, SPI, and I2C. These interfaces allow Arduino to connect with sensors, actuators, displays, and communication modules. For example, temperature, humidity, light, motion, and gas sensors can be interfaced to collect environmental data, while relays, motors, and LEDs can be controlled based on programmed logic. In IoT laboratory setups, Arduino is typically used as an edge device that collects real-time data from physical environments. Since it operates with low power consumption and simple hardware requirements, it is ideal for building sensor __________ ___ _____ __________ ____ ____ ______ ________ ________ __________ ___.
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