Newsgroups: comp.robotics
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From: fredm@media.mit.edu (Fred G Martin)
Subject: Re: 6.270 board for data logging
Message-ID: <1993Aug12.035452.2529@news.media.mit.edu>
Sender: news@news.media.mit.edu (USENET News System)
Organization: MIT Media Laboratory
References: <93223.112154AXB30@psuvm.psu.edu>
Date: Thu, 12 Aug 1993 03:54:52 GMT
Lines: 40

In article <93223.112154AXB30@psuvm.psu.edu> <AXB30@psuvm.psu.edu> writes:

>I am contemplating building the 6.270 board with the primary intent of using
>it to log some data (read some analog inputs, about 10kbyte). I know that is
>not what the board was designed for, so I have a few questions:
>
>1) - What is the range of the A/D inputs and resolution?

The 6.270 board uses the 6811's on-chip A/D, so that's 8 bits from 0
to 5 volts.

>2) Is there an "upload" routine in Interactive-C that will make uploading the
>     data to a host PC easy?

Unfortunately, no.  There is a way to display the contents of an
array, but it's not particularly friendly.

If you're willing to do a little coding, it wouldn't be too hard to
write a separate program that interacted with a running board and
retrieved bytes from it.  The relevant protocol is pretty well
documented in the source code for the runtime program.

>3) Assuming you have all the components, etc., how much time is required (for
>     someone who knows the right end of a soldering iron :-) ) to build the
>     kit?

Approximately 8 to 12 hours (for the main board plus the expansion
board).

>Thanks for any pointers - Atle Bjanes (Hershey Foods Corp.)

You're welcome!

	-Fred

--
Fred Martin | fredm@media.mit.edu | (617) 253-7143 | 20 Ames St. Rm. E15-301
Epistemology and Learning Group, MIT Media Lab     | Cambridge, MA 02139 USA


