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All posts for the month October, 2014

mowbot2

Our first generation robotic lawn mower wasn’t the complete success that we hoped it would be.  It started off simple enough, as a remote controlled lawn mower, using a hobby RC controller and some used wheelchair motors.  With some simple steel framing, the lawn mower was durable, easy to drive, and worked surprisingly well for a remote controlled mower.  Well, it was a little hard to steer in a straight line.  That’s why I added a GPS.  However, when I attempted to add the GPS and inertial guidance functionality to see if it would operate autonomously, it failed miserably.  Although it would navigate to preset waypoints, it would only find one waypoint on the North side of lawn, and one waypoint on the South side.  Obviously, this wouldn’t be sufficient to operate as an autonomous lawn mower.  The goal here was not a random pattern, but a parallel path mowed lawn. Continue Reading