November 24, 2010
After finally getting all the parts and assembling my new uBotino board, it didn't work! So I grabbed my multimeter and began probing around to find the problem. Got my Dad to hep me since he spent his entire career in electronics. Apparently, this particular board had a couple of places where the etching didn't complete properly. Found a short on the input pin of the voltage regulator and a short on pin 14 of the motor driver. Did some scratching on the input pin line of the voltage regulator to get a good connection and applied a high current, low volt transformer on pin 14 of the motor driver mounting hole and got it to pop through the etching block. Now it works and hums along perfectly!