In order to interface with the Raspberry Pi, you often want to use the General Purpose Input/Output (GPIO) port. It is easy enough to connect a broadboard to the port, but how do you write Xojo code that can talk to the port?
The answer is to use the GPIO module that is included with Xojo in conjunction with the wiringPi library. And now this module is also available on GitHub:
I encourage all you Raspberry Pi experts to clone the GPIO project on GitHub and push up any enhancements you come up with.