SparkFun will be closed Nov 26th and 27th for the Thanksgiving holiday. Orders placed after 2:00pm MT on the 25th will ship out Monday the 30th.
We’ve been meaning to write this interfacing tutorial for many years now. It’s a simple breakdown of the various ways to interface 3.3V logic devices to 5V logic devices. It’s not too tricky! We hope it helps you avoid burning out your lower voltage sensors and devices.