Fwd: [sugar] Get involved - Measure Activity on the XO

[Rafael Enrique Ortiz Guerrero]

---------- Forwarded message ----------
From: Rafael Enrique Ortiz Guerrero <dirakx at gmail.com>
Date: Sep 15, 2007 3:10 AM
Subject: Re: [sugar] Get involved - Measure Activity on the XO
To: Arjun Sarwal <arjun at laptop.org>

hi all

About the related projects mentioned by arjun, you can see,

http://wiki.laptop.org/go/Electrocardiogram
http://wiki.laptop.org/go/TeleHealth_Module
http://wiki.laptop.org/go/Open_Hardware.

So the main idea is that all the circuits designs have to be open.

Cheers!


On 9/14/07, Arjun Sarwal <arjun at laptop.org > wrote:

> Forgot to put down these two links -
>
> 1. Source code at http://dev.laptop.org/git?p=projects/measure;a=summary
> (You could git clone it like this: git clone
> git://dev.laptop.org/projects/measure)
> 2. Wiki Page - http://wiki.laptop.org/go/Measure  (The peripherals would
> be put up on this page in a day or two)
>
> thanks,
> Arjun
>
>
>
> On 9/15/07, Arjun Sarwal <arjun at laptop.org> wrote:
> >
> > Measure Activity on the XO
> > (The Activity which converts the XO into an oscilloscope, a spectrum
> > analyzer and a data logger !)
> >
> >
> > Release 9 of the Measure Activity (build  575 onwards) features an
> > improved UI and the following basic features -
> > * Apply an AC or DC signal into Mic_In port, or simply observe the sound
> > signal picked up from the Mic on the XO
> > * Watch the signal in time domain for frequency domain representation
> > * Toggle the bias voltage at the Mic_in port ON/OFF. This voltage is
> > required by many sensors.
> > * Log data at a specified interval, take a snapshot of the current
> > waveform; and draw a graph of the logged data too.
> >
> >
> >
> > How can you help ?
> >
> >
> > (1) Help in software development of the activity. There are many
> > refinements and features that can further be added. I have put some of the
> > priority ones down as tickets in Trac. Have a look at #3435, #3437, #3438
> > and #3461.
> >
> > (2) Do projects (and help document them ) around the Measure Activity.
> > Ideas ranging from building a low cost ECG system to a low cost intrusion
> > alarm system. I've built and tested two ideas illustrating the concept :
> > =>'A low cost intrusion alarm system' that makes use of a toy laser that
> > I powered from the USB and used a simple LDR (light dependent resistor)
> > connected to the MIC_IN. Switch on the bias, set the activity to DC mode;
> > observe the voltage change when the light path of laser upon the LDR is cut!
> >
> > =>'Temperature' monitoring system that I made simply with an LM35 temp
> > sensor, and I powered the sensor from the USB port.
> >
> >
> > (3) Help develop content and curriculum around the Measure activity.
> > Science experiments, Physics concepts...being able to relate concepts with
> > physical phenomena through hands on experiments makes for great learning !
> > For example, kids can whistle into the mic and using the frequency
> > domain display mode in Measure, compare and learn about frequencies...
> >
> >
> > (4) Want to build a low cost science/physics/chemistry lab ? A
> > tele-health monitoring system ? Lots of possibilities to be explored. All
> > new ideas welcome!
> >
> >
> > (5) Help document such projects and other cool ideas . We would , in
> > probability, be going in for Makezine DIY style documentation of such
> > projects - with cool illustrations, photographs and explanation...
> >
> >
> >
> >
> > Get in touch with me at arjun at laptop.org for any details/clarifications.
> >
> > Looking forward to great collaboration and support from the community.
> >
> >
> > sincerely,
> > Arjun
> >
>
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>
>


-- 
Rafael Enrique Ortiz Guerrero
One Laptop Per Child
rafael at laptop.org

-- 
Rafael Enrique Ortiz Guerrero
One Laptop Per Child
rafael at laptop.org
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