So the vexrobotics website says that the new encoders will be connected to the I2C port. The cortex only has one I2C port. Does this mean you can only use 1 new encoder?
No, you can “daisy chain” the encoders together. You plug your 1st encoder into the Cortex, then you plug a 2nd encoder into the 1st one, then a 3rd encoder into the 2nd one… and so on up to (8) I2C devices.
-John