Comments: PCA9306 Level Translator Hookup Guide
Looking for answers to technical questions?
We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.
If you've found an issue with this tutorial content, please send us your feedback!
Just a note. Your Fritizing diagram is missing the ground connection between the PCA9306 and the pro mini.
Actually, that last pin on the PCA9306 shouldn't be connected to anything. However, you are correct that there should be a common ground between the Pro Mini power source and the HMC5883.
The diagram has now been fixed.