My car only moves when it is plugged directly into both my pc and battery pack?
The best thing you can do is post a schematic, not a frizzy thing along with a picture of the parts that you modified and links to all of the other parts. You state: &quot;orange arduino led is flashing and making a weird sound&quot; How does a LED make a sound, they are not designed to. The best thing you can do for yourself is read the Arduino cookbook and do some online tutorials on basic electronics and the arduino.