Concepts
Understand this idea. Builds never explain a concept inline - they link here at the exact moment you need it, so each idea gets written well once.
- HingesLearn how to make a Butt Hinge on any of your projects!
- I2CHow two wires let your microcontroller talk to dozens of sensors and displays at once.
- Pull-up ResistorsWhy input pins need a default, and what "floating" actually means.
- Voltage, Current & ResistanceThe three numbers behind every circuit, and the one equation that ties them together.