Trouble with GP2D12 sensor and Basic Stamp 2

Suraj

Hi everyone, I am new here.
I need help with getting a GP2D12 sensor working.... I currently have it connected to a parralax stamps in class board and its giving me 1s and 0s, while i am trying to measure distance....Please help me on this aspect.... anyway to get it working would be appreciated!
Thanks
email: sixstring@gmail.com

Jon Williams

Try this: http://www.parallax.com/dl/docs/cols/nv/vol5/col/nv114.pdf

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Jon Williams
Applications Engineer, Parallax
Dallas Office

Larry

The reason you are having problems is that the GP2D12 is designed to return a voltage proportional to distance. This normally is read with an ADC (analog to Digital Converter).

The Stamp doesn't have one built in, so you will need to:
1) hook up an ADC unit to the stamp
or
2) use another Sharp sensor such as the GP2D02, which returns a byte value proportional to distance.

two other possible solutions-

There used to be a Sharp sensor that returned a PWM value proportional to distance that the Stamp can read-- you may still be able to find one.

I suppose you may be able to use· a cap and RCtime to read the sensor,but I haven't tried.

Larry

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Suraj

WOW!!!!
That was super fast!!!!!
Thanks a lot guys.... I'll try what you said.....
-Suraj
THANKS A WHOLE LOT!

Jonathan

Suraj,

Here is a page I made about uising this sensor. You can see it at:

http://madlabs.info/gp2d12/sharp_gp2d12.shtml

Hope this helps!

Jonathan

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