I'm working on a project that i have to present a vehicle with arduino which
1)Starts with any incentive from distance
2)Be moved in line borders
3)Detects any object-obstacle on its way and stops while the object is still on its way
I started by converting a common cheap rc car.The rc uses 2 dc motors, one for the forward and backward move and one for the steering.
After lot of hours I managed to move the dc motors using L293.
I'm planning to use LDRs in order to have a successful in-lines way,but I didn't managed to find something for the first step...
Any help would be helpful.
*(I apologize but English are not very familiar to me...)
I don't understand what you mean by 'incentive'. Perhaps you just mean it's going to have a switch to turn it on?
When you say "Be moved in line borders" do you mean that the lines are going to form a lane that it has to stay within (i.e. not cross the lines) or is it more like a conventional line-following robot where it start off directly over the line and steers to stay on top if the line?
I suggest you get some of the LDRs you're proposing to use, position them over a line under the conditions you'll have for your test, and see how easy it is to detect the line.
Once you can detect the presence/absence of a line under the sensor, you can think about setting several of these sensors under the vehicle so that you can detect whether the vehicle is over the line and where the line is relative to the vehicle.