Quiic Adapter
There are a few things you should know about the Qwiic system before you go plugging in I
2
C
devices willy nilly. The first thing to be aware of is that all Qwiic devices run on
3.3V
. So if you have
a 5V device and you are not using a stackable breakout board with a logic level converter (such as
the Qwiic Shield for Arduino
), you’ll need to grab a logic level converter to boost your signals up to
5V. Also, be aware that all Qwiic devices have pull-up resistors on the I
2
C lines. So if your device
does not have it, you’ll need to add those in or use the ones on your microcontroller.
The Qwiic adapter is populated with two 4-pin 1mm JST connectors to quickly connect your I
2
C
devices together. Four plated through holes are broken out for SCL, SDA, 3.3V, and GND. These
pins can be used to convert an old I
2
C enabled device into a Qwiic enabled board.
