Using an LCD Display with Inputs & Interrupts on Raspberry Pi

A quick tutorial demonstrating how to use the Python rPI.GPIO module to poll inputs and generate interrupts on a Raspberry Pi then create a hex conversion calculator that displays results on a 16x2 LCD display. Builds on my previous LCD Display tutorial. Full notes and code are available on my website: http://www.rototron.info/using-an-lcd-display-with-inputs-interrupts-on-raspberry-pi/