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- Organization: Freshman, CIT general, Carnegie Mellon, Pittsburgh, PA
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- Newsgroups: comp.robotics
- Message-ID: <EfM5_Ya00WBM458UUW@andrew.cmu.edu>
- Date: Fri, 22 Jan 1993 15:01:40 -0500
- From: James Ryan Miller <jmce+@andrew.cmu.edu>
- Subject: Sonar and the 68HC11
- Lines: 21
-
- I am curious if anyone has programmed a 6811 to find distances with
- one of those polaroid sonar things. Right now, I have the transducer
- and the 6811, but I need to determine what interface circuitry is
- needed. I know you can buy kits from polaroid that has a thing that
- does all the decoding and determines distance and stuff, but that is NOT
- what I want.
-
- Here is how I'm envisioning it ... The 6811 could pulse a trigger
- line which has the transducer xmit a "ping". When the ping was
- received, it would pulse a line that the 6811 would time, and calculate
- distance. With the great Input Capture features of the 6811, the
- software should be easy, but how much circuitry is needed to have these
- two nice digital lines at the computer to actually driving the
- transducer.
-
- Any references, ideas or suggestions are appreciated.
-
- Thanks,
- Ryan Miller
- jmce+@andrew.cmu.edu
-
-