Inspired by the crazy servo motor workpiece by David Bowen, I tried to learned controlling DC motor rotating direction with H-bridge through this tutorial but failed to change the direction. The result was either rotated or stopped. Thinking the possibility of my motor might be broken, I borrowed other’s official stater kit’s DC motor, which was smaller than mine, and then things just went wrong…

The motor spun so fast and Uno became kind of warm. I pulled out the power supply but it was too late. I couldn’t upload any sketches anymore. Even unplugged all the wires and run the Example sketch…. NOOO000ooo….

Too frustrated to take a pic of my breadboard. Should remember to avoid emotions stopping you document next time…