it should move inside a perimeter wire (or buried wire fence). I have no clue how to build the buried wire fence.The basic concept is that the wire emits some signal at short range (maybe 2 feet?). Then when the robot comes close to the wire, it detects the signal, and runs the 'turn around and go another way' algorithm.
For my first robot it is not that simple :(easy, your first robot should probably be the $50 Robot. Its cheap and somewhat easy and gets you acclimatized to what you will be seeing. Making complicated robots early can be very bad. I Do understand your thought process though. Also if you make the $50 robot you can make a prototype of your lawnmower, to test what works and what doesn't.
I need to do this project for my thesis...so I have no other choice :(This is a somewhat off topic question but What is your Major?
In our case the robot has to move in each cell over the memory matrix and only avoid those that are considered as impassable. How to do this with wavefront Algorithm???Well, I wouldn't use encoders for this, because on grass in a backyard the slip error would build up insanely fast . . . but if you still wanted wavefront, your robot must declare a goal location as a part of the yard that hasn't been cut yet. After its cut, it should declare another uncut location as the new goal. But really, I'd just imitate the iRobot Roomba maximum coverage algorithm.
For the sonar and IR sensors do I have to connect it directly to the PIC or should I use some kind of interface like the rangewizard?directly to the PIC
For the perimeter wire does someone have a schematic?this should help get your started:
Colorclocks, I have re-uploaded the image. To view it more clearly right click and select view image. For the sensor you are also using a 555 timer?
Also can the Parallax PING ))) Ultrasonic Range Sensor be used with the PIC16F877A?
Will a wire of 100 m be suitable for this circuit???? ???
Hmm how can I make a front bumper sensor using two microswitches??Not the best of my tutorials, but its all here on SoR ;D
how do I prove that I need a motor of a particular capacity?http://www.societyofrobots.com/RMF_calculator.shtml
The power regulation schematic is it applicable to a 12 V sealed lead acid battery?Yeap, but don't regulate voltage to the motors, just microcontroller.
Admin can you please help me with a mechanical engineering reason why the wheels on the picture provides more traction?Those spokes dig into the ground, almost meshing as if the ground was a linear gear.
Those spokes dig into the ground, almost meshing as if the ground was a linear gear.