TomGeorge:
Hi,
Sorry but ALL your pictures are way too small, you need each image to be about 500 x 500 pixels or what ever proportion each may have.
You can click on the previews of the pictures of the car and the excel graph. For the othere ones, you have to past the link. When you're in the website you can click on the picture to be able to zoom again. I tought that the size was okay but if needed I can take a picture again, yes.
TomGeorge:
What is the power supply for your project?
If we take Q = I * t
with Q the capacity of the battery, t, the duration of the battery and I the current delivered by the battery, we have I = Q / t, knowing that Q = 0,5 Ah and t = 12min = 0,2h (told by the manufacturer);
I = 0,5 / 0,2 = 0,25 A
Power Pa=UI and the battery can and has to deliver 7,4 V
Pa =7,4 * 0,25 = 18,5 W
I believe it's around this value.
EDIT : Maybe did you talk about the battery in the car and the battery which will feed arduino ? The battery for the car is a Li-ion 7,4 V, 500mAh. The one for the Arduino when the car is mooving is a 9V, 270 mAh.
TomGeorge:
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
I don't really understand why the circuit was put this way in some places but ok i will do it.
EDIT : Here it is,
Thank you for replying !
Kevin