Subject:
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Re: Sonar Multiplexor Question
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 2 Mar 1998 19:39:01 GMT
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Original-From:
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Vader <thehahns@nconnect.netSAYNOTOSPAM>
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Reply-To:
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Vader <rent-a-nerd@technologist.com#AntiSpam#>
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Viewed:
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1387 times
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> To anyone on the list:
>
> I would like to drive 3-4 transducers from a single Polaroid
> sonar ranging unit. Adam Cox posted a circuit for doing this
> on the HandyBoard page -- I have a few questions regarding
> this and possible alternative solutions.
Ive never done this before, but couldnt you do this?
Buy a multiplexer that will take 2 outputs and multiplex it to 4
outputs, since you will only be driving one at a time. To each individual
output of the multiplex, wire the power to one outputting transducer and one
inputting transducer, and wire all of the recievers to the reciever portion
of the interface, and all the transmitters to the transmitter and of the
interface. Using the multiplexer, you are guaranteed that only one
multiplexing pair will be on at a time, uless you have a faulty chip.
Again, I have never worked with Polaroid sensors, but this does work with
motors, ETC
Phil
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Message has 1 Reply:
 | | Re: Sonar Multiplexor Question
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| (...) I notice that Adam's circuit uses all 4 available SCI outputs to select the transducer, but the sonar board itself requires two of them already. Why not just get a 2-to-4 line demultiplexor, and use the remaining 2 SCI outputs to select the (...) (27 years ago, 2-Mar-98, to lugnet.robotics.handyboard)
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