help with sonar I emailed fred martin directly and he told me to respond to this address.

Fred:
does the sonar click indicating transmit?  pls. follow up to the HB
mail list.

My response:
yes, the sonar does click.  I have also connectd it to a scope
and both
the init and the echo signal appear to be correct. 
 
In your message you said:
> Mr. Martin
> I am using the handy-board in conjunction with two sonars with 6500
> ranging modules from Polaroid.  I used the connections and the code that
> you suggested from the mit web page.  I continue getting a constant
> reading no matter where an obstacle is placed.  I read the that it may
be
> caused from interference, but I don't know how to fix that.  I also
> sometime receive a signal that too much time has elapsed.  Do you have
any
> suggestions about how to remedy this.  Or perhaps you can direct me to a
> web page or other resource that mught have some answers.
>
> Matthew Spenko
> mjs329@nwu.edu
>



