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For questions about interfacing at the physical level, either MCU to peripheral, or peripheral to real-world. This should be used for questions about the low-level detail of an interface, not for more general 'connecting A to B' type questions.

For questions about making connections using serial, I2C, SPI or GPIO types of connections from an MCU. Also for questions about interfacing between specific sensors and interfaces such as ADC.

This tag should not be used for general or connector questions.