Chapter 8 (1st Edition)

If you are looking for the Chapter 8 content for the 2nd Edition of Exploring Arduino, please click here.

The I²C Bus

Parts List


Download Code (1st Edition, Chapter 8)
(Also available on GitHub)

Useful Links


  • In figure 8-8, the wiring to the right-most pin of the TC74 is incorrect in the book. It needs to be connected to 5V. The correct version is shown in the following colored wiring diagram.

Color Wiring Diagrams


Follow along with this video for a visual tutorial about the I²C Bus:

Watch a demo of the temperature monitor created in the chapter: