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Signal pull-downs

Pushing data as fast as I am, the signal was getting clobbered by itself through reflection.  The IC datasheet recommends having series resistors after a certain length between ICs, however since I am nowhere near that, I didn’t bother to put anything in.  As it turned out, the data was getting corrupted and adding pull-downs solved it.  This is my attempt at a Macgyver-fix.  Future revisions will have proper pads and SMD resistors.  File this one under lessons learned.