there is a 9V battery and 7.5V battery (5 1.5Vs). the 7V battery (800mAh Ni-Cd Battery; amazon says 6v but I measured 7 with a multimetter) is for the two motors (one is a turning mechanism while the other makes it drive forward or backward. The L293D is where the 7V and motors are connected. 9V battery (POWERFULCELL Extra heavy battery Samxiang) is every thing else, the LED that is suppose to turn on at the start and then off when the driving is done, the servo motor that comes on at the end (its suppose to push a ping pong ball off but I havent set that up, I just let it turn one way and the other for now), and the Arduino board.
I have had some weird instances where when unplugged, the front motor and servo and led comes on. The servo goes on to infinity a lot of the times
So in the project, I am suppose to go in a rectangular box pattern but its difficult because even though it seems that I am using the same battery as before, the motors act so weak on the ground, the initial acceleration sometimes doesnt work and I would have to lift the car for a second in order to let the car move forward. Sometimes the turn (front motor) is fine but sometimes it doesnt turn enough. This makes it so that everytime I test this vehicle, there is a different out come. And now I can't put it on the ground on its own anymore. Here is what the schematic looks like.