South Pointing Chariot (Electronic)

[john1]

Hi,

After a while, a little under a fortnight, an analogue method has presented
itself to me.
Surprisingly i feel it is a better way than the digital method.
Its only errors would be in the wheel-to-ground traction, which can give
'slippage' between the relative wheel positions.
And of course, traversing hillsides obliquely where one wheel rises and falls
relative to the other, introducing a slightly longer path. This problem also
affects the electronic method.

I have not considered introducing a counter-effect to offset this last
innacuracy as i can think of no suitable sensor.

Regards, John

 

[davew]

Sounds like a College assignment.?


Yes it is, , I am a technicain in the lab where the students will be constructing what should be their own design

This is a project set to our students on the design and build course in their second year at Queen Mary University of London in the electronics/computer science dept.
They are in groups of 5 or 6 students where they split the work load in to hardware and software.
The basic idea is as stated, but we are getting a magnetic sensing device which they can use in their design.
**broken link removed**
This will be used with whatever aditional hardware they choose and be interfaced with a PC which will collect the distance traveled .
They have a budget of £50 for the hardware.

So please feel free to give them any general advice, but please don't do the project for them.
Let them use their own brains, just for a change

Thanks Dave

 

[sabbirahmed100]

It's a course called design and build, It's a 2nd year module at Queen Mary university of London, dept of electronci/computer science.
Basically they are in 16 groups of 6 have to do this project, they will be given a "Dinsmore 1490 Digital Compass Sensor" (they can do it another way if they wish" and have to build a circuit and interface it with a PC and write the software, so please don't help them too much.

Cheers

Dave in the electronics lab where this course is run.

(Think it's time to order some more extinquishers)