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List:       olpc-library
Subject:    Re: [OLPC library] Get involved - Measure Activity on the XO
From:       "Arjun Sarwal" <arjun () laptop ! org>
Date:       2008-04-29 18:29:35
Message-ID: dc942fa10804291117t46c6efc5y5977ef8ce0a28a8d () mail ! gmail ! com
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Ray,

Thanks for your message.

As I understand, that you wish to connect multiple sensors to the USB
based sensor board  and from the UI of your activity/application
select which sensor to read from.

Edward Baafi, cced here might be able to comment better on that since
he's been most deeply involved in the programming of the USB based
sensor board.
It would be a matter of writing a simple python script that would
involve making use of the pyusb python libraries.

I would like to point out at this point that USB based sensor board
support hasn't yet been incorporated into Measure yet, though I do
have plans of doing that. Any help by anyone in this regard would be
greatly welcome as I develop Measure from whatever free time I get
from school studies.

many thanks
Arjun

On Sat, Apr 19, 2008 at 3:51 PM, Linda Hill <celestialharp@juno.com> wrote:
>
>
> Arjun,
>
> I'm just getting started working with my XO, and I built a temperature
> sensor with an LM35 chip. My intention is to have multiple sensors around
> the house, and read each of them separately. I am puzzling over how best to
> output a binary code to select which sensor I wish to read. I know that the
> USB port and the USB card that is being designed (and produced?) will allow
> me to communicate out from the XO, but is there some other way that I'm not
> thinking of that could be used?
>
> I like it that I can get analog data into the XO so easily. Now I'd like to
> know how to get digital data out effectively.
>
> Thanks,
>
> Ray Phoenix
>
>
> _______________________________________________
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>  Library@lists.laptop.org
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>
>



-- 
Arjun Sarwal
Intern, One Laptop per Child
Email: arjun@laptop.org
IRC: arjs on irc.freenode.net in #olpc, #olpc-health, #sugar
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