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1  Using Arduino / Sensors / Re: ADXL335 Accelerometer on: May 27, 2011, 05:32:25 pm
Hi AWOL,
Thank you for your help... I think that i need explore more about reading analog values from Arduino. I think that the Arduinos Forum (http://didier.longueville.free.fr/arduinoos/?p=1389) will help me.
But... one more question. The raw values that i receive from X axis are:

-90º - 256
0º - 321
90º - 385

Is correct make a Lookup Table? I have to calculate the factor from 321 to 385 and from 321 to 256, and then make the calc.
Thank's again.

2  Using Arduino / Sensors / ADXL335 Accelerometer on: May 26, 2011, 12:49:41 pm
Hi,
I have readed some posts with tilt measurement of ADXL335 accelerometer and i can't find the solution to calculate inclination angle.
Because i use Arduino Duemilanone with 3.3v and i read http://www.freescale.com/files/sensors/doc/app_note/AN3107.pdf, to calculate the inclination angle I have to use this formula:

angle=asin((Vout - 1650) / 330)

This is correct? I don't thing so, because the result is always 0.
Furthermore, my reads from x and y is about 324 and 345, so, with this values never i have a positive value.

Can you help me please, find the solution?
Thanks in advance.

Rolando Rocha
From Portugal
3  Forum 2005-2010 (read only) / Development / Re: Hacking the SDuFAT lib on: October 07, 2010, 06:45:38 am
Hi,
I have the same problem... I have a Libelium microSD module and the sdFat library doesn't work.
Have already some results from that?
Thanks thanks in advance,

Best Regards,
Rolando
4  Forum 2005-2010 (read only) / Portugues / Telit Python e Arduino on: November 17, 2010, 03:48:03 pm
Boa noite,
Gostaria de saber se alguém já utilizou o Telit Python com o arduino. Estou com dificuldades em comunicar com o modulo GM862 através da porta série RX/TX, utilizando a biblioteca SER do Telit Python.
Agradeço qualquer ajuda.
Obrigado
Cumprimentos,
Rolando
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