BoRG Meeting for 18 May, 2013

Four of the families taking our Learn to Make a Robot class attended the BoRG meeting in May. Our goal for this meeting was to fix an LED and phototransistor in the line follower circuit used in this class. We discovered that the classroom directions were not sufficiently clear that the LED and phototransistor are on the same side for both the left and right side of the PCB. So after a little elbow grease and rework, we straightened out two of the line follower circuits. While we were working to repair circuits, another one of our families was programming their robot to follow black lines. This was our opportunity to discover that bright sunlight negatively impacts the phototransistor’s ability to detect reflected IR from the line following board. We’ll experiment with making the phototransistors’ collimation tube a bit longer.