Subject:
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Re: analog problems
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 12 Sep 1998 00:03:59 GMT
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Original-From:
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Patrick P.K. Hui <huip@+saynotospam+hkstar.com>
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Viewed:
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1241 times
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Dear Sam,
It is so strange as you already replace all the chips. The "testanalogs()"
is used to test A/D feature and analog port of MC68HC11. It will prompt you
"Press START to test knob..." You then press START button and the reading
of A/D port will come out to LCD screen.
This voltage is divided from knob as you've turning the knob. In all cases
(even the knob doesn't work), you should get a reading between 0-255.
Please ship the board back to us and we will be able to figure it out and
repair for you.
Our shipping address:
Hui, Pak Ki
Robot Store(HK)
Flat-E 13/F Yik Hon Bldg.,
72-78 Java Road,
North Point,
HONG KONG
Sorry for any inconvenience cause.
Thanks and Best Regards,
Patrick
--00--------------------------------------------------------
Low cost MIT Handyboard supplier and
Official Distributor of Interactive-C 3.x
** An intelligent C programmable controller
board to build your own Mobile Robot
WWW: http://home.hkstar.com/~huip for more info
E-mail: huip@hkstar.com
-----Original Message-----
From: Sam Wurzel <Sam_Wurzel@loomis.org>
To: handyboard@media.mit.edu <handyboard@media.mit.edu>
Date: Saturday, September 12, 1998 7:02 AM
Subject: analog problems
> I am building my handyboard and have been unable to succesfully execute
> testanalogs(). testmotors(); and testdigitals(); work but when i
> testanalogs(); either the board displays the current position of the knob
> (1-256) and freezes, displays the heart in the corner and freezes or
> displays nothing and freezes. when i say freeze i mean no logner respond
> to the computer or the start/stop buttons. I have replaced every chip on
> the board (except the main proccesor, the memory chip and the chip
> soldered under the memory chip).This fixed the problems i was having with
> the testmotors(). The knob I have is different from the pictures, it came
> soldered when I bought it from the Robotstore in Hong Kong.
> Any assistance would be appreciated.
> Sam
>
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