A no-BS beginner's guide to Arduino — built for people who want to understand what's happening, not just copy-paste blink code. Most Arduino tutorials either dump the full reference manual on you, or ...
These are two ways for the Arduino to talk to multiple "smart" devices over just a few shared wires, instead of needing a dedicated pin for every single component. I2C uses just 2 wires — SDA (data) ...
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