I'm looking for some way of transmitting the data from the on-board sensors of Neo to a PC while using Neo as Arduino
Dear @Ahmed Saleh, from an external PC you cannot read the "serial window" where the two cores communicate. But you can write it on pin 1 and pin 0 and use it with a serial adapter If using Neo as a Linux board is an option, you can also take a look to the supercool libraries made by users: http://www.udoo.org/docs-neo/UDOO_NEO_made_by_the_Community/Python.html As you can see, there are two for the motion sensors.
