During UART communication, you notice that the serial monitor is displaying garbage characters and nonsense symbols. What is the most likely cause of this issue?, The TX and RX pins are not crossed., The communication lines are experiencing a power mismatch., The sender and receiver are using mismatched baudrates., Both devices are connected to the same port end., You have wired an I²C device correctly and ensured the power supply matches its requirements (e.g., 3.3V), but the device is still not responding. According to your notes, what is the best way to troubleshoot this?, Run an I²C scan to see what addresses are detected., Swap the SDA and SCL connections just in case., Check that the TX and RX pins are crossed properly., Change the baudrate to 115200., How should the data lines be connected between two devices to ensure proper UART communication?, TX connects to TX, and RX connects to RX., TX connects to SDA, and RX connects to SCL., Both TX and RX must be connected to the same virtual COM port., TX connects to RX, and RX connects to TX..

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