Subject:
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Re: 6500 returning dd values
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 24 Jun 1999 21:00:22 GMT
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Original-From:
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Ethan Getz <ethang3@hotmail.SAYNOTOSPAMcom>
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Viewed:
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3135 times
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I'm having the same problem with my expansion board. When I type
sonar_display(); the numbers start flashing on the LCD. The numbers are
changing rapidly and appear to be both negative and positive. The numbers
seem to be random as well. I made sure that the init pin matched the init on
the expansion board. I checked the other pins as well. I tried replacing
the chips but couldn't even order any because you have to order a minimum of
25 or 50 at 5$ each. I order the 40$ circuit board instead and hooked it
up. The new board is doing the exact same thing. Please help.
Ethan Getz
UNM Electrical Engineering Dept.
> From: shsc9801@condor.stcloudstate.edu
> To: handyboard@media.mit.edu
> Subject: 6500 returning dd values
> Date: Mon, 03 May 1999 07:51:53 -0500
>
> Hello, I connected a Polaroid 6500 to my expansion board on my handy board
> and tried to test it but it returnes a different value every time, some of
> them being odd values (eg -24567). Heres how it lies - on the 6500 per.
> bd. E1 is connected to the 'metal strip' (could not think of the
> appropriate name) and E2 is connected to the base (grounded) on the sonar
> "speaker". There has been a 0.1 UFD @ 50 VCD electrolytic capacitor added
> in position C7. Whenever you run any of the programs in sonar.c, when it
> checks the distance the sonar "speaker" ticks once. But, as I said, it
> returns odd values never being the same.
>
> Can anyone help?
>
> Scott Sherman
> IT Spec. II
> St. Cloud State University
> 720 4th Avenue South
> Academic Computer Services
> ECC Building, Room 101
> (320) 255-4888
>
>
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