Attempting to Make a PCB with Shapeoko 3 CNC and Chilipeppr

HackerBox #13 included some IR sensors for use with the esp8266 controlled car.  I tried some very basic circuits and programming to have the car follow a line.  Overall, it was a pretty big fail.  The car would follow the line at first, and then start correcting its course if it veered away from the line.  These corrections would continue with the car doing ever larger left and right wobbles, and ultimately the car would wobble right off the line.  Some Google searches indicated that this is a pretty common problem, and that a better way to approach line following cars is to use a sensor array of IR emitters and detectors such as the Pololu QTR-8RC and also to […]