Replace Coursera Quickbot with Sparkfun RedBot and Pi Zero
Based on protocol described in Coursera Control of Mobile robots class, and the quickbot platform described here:
https://github.com/o-botics/quickbot_bbb
and here: https://sourceforge.net/projects/pysimiam/files/coursera/ the pysimiam-coursera-week6.zip file and /pysimiam-coursera-week6/robots/qb_realtime_comm.py python file