

You must use a version of our registered Qwiic logo from the files provided.

The requirements to say that your board is Qwiic or Qwiic-Compatible: We would be thrilled if you used a Qwiic connector on your board or product! You can use the name Qwiic without royalties or attribution. The differential signaling allows the I 2C signals to reach distances of up to 100ft while still maintaining their signal integrity!Ībsolutely. The differential signals are sent over an Ethernet cable, which attaches to the breakout through the on-board RJ-45 connectors. The breakout uses NXP’s PCA9615 IC, which converts the two default I 2C signals into four differential signals, two for SCL and two for SDA. The fastest and easiest way to extend the range of your I 2C communication bus is to use the Differential I 2C Breakout. That said, we’ve successfully communicated with sensors and boards via I 2C over 1 meter (~4 ft). The bus was designed to communicate between ICs on a printed circuit board, so it wasn’t really designed to go long distances. I 2C stands for inter-integrated circuit, and we’ve got a tutorial dedicated to it here.

All boards with extra pin options (such as interrupts, address selection, power save mode, etc.) will have those pins broken out to 0.1" holes, so the end user can add extra connections as needed. We deliberately chose four conductors to increase usability of the interconnecting cables, minimize the cost of the connectors and limit the PCB footprint.
