So I just hooked up the Bluesmirf module. It was very exciting!
However, now that I can actually drive the car around, I noticed a problem.
The car will go very quick in short bursts, but then the car will slow to a crawl and I hear a hissing/whirring sound until the car finally just stops. When I let off the accelerator, the whirring stops. If I let the car stand still for several seconds and hit the accelerator, then the car springs to life and goes fast again for a short time. I just charged the battery a couple days ago and I can repeat this speed up slow down process for some time.
It almost seems like the battery gets drained quickly and then has to take a breather before it can go again.
Can someone please tell me what is going on?
I am a total noob
Also, I have the Arduino and Bluesmirf running off a separate 9v battery. One thing that I found odd was that if I didn't have a wire going from the ground rail on the bar to both the battery's GRND AND the Arduino's GRND, then the motors wouldn't turn.