Pixy2 for LEGO comes with a special Pixy2-to-LEGO cable and is preloaded with a version of the firmware that speaks the LEGO protocol by default. If you have Pixy2 for LEGO, just follow our Pixy2 for LEGO Quick Start Guide.

To determine if you have the LEGO firmware on your Pixy, bring up the About dialog in Pixymon and it will tell you if the firmware is “LEGO” (meaning you have the LEGO firmware) or “general” (meaning you have the regular version of firmware that works with Arduino and others.)

If you have “regular” Pixy2, you can still hook it up to LEGO Mindstorms EV3. It will require you to make a Pixy2 LEGO cable, or possibly buy a Pixy2 LEGO cable from one of our distributors - currently Robotshop or Amazon US.

Once you've bought or made a cable, you'll need to set the Data out port to LEGO I2C in the Interface Tab in PixyMon.

And you're ready to follow the Pixy2 LEGO Quickstart Guide.