<ul><li>The Internet is not just the World Wide Web but a global system of interconnected computer networks.</li><li>Building smart devices involves creating miniature 'internets' within them.</li><li>Communication protocols are crucial for devices to exchange information effectively.</li><li>Devices use communication protocols like OSI model, HTTPS, Wi-Fi, and Bluetooth.</li><li>Understanding communication protocol basics is essential for IoT development.</li><li>The article explores the challenges faced when making devices share digital data over wires.</li><li>SPI (Serial Peripheral Interface) and I2C (Inter-Integrated Circuit) are discussed as communication protocols.</li><li>While SPI is efficient, I2C reduces wire clutter for multiple device connections.</li><li>UART (Universal Asynchronous Receiver-Transmitter) is a simple protocol for point-to-point communication.</li><li>RS232 extends UART for long-distance communication using higher voltage levels.</li></ul>

The Language of ‘Things’ : How the “Internet” in IoT is built

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