[PD] Arduino/Pduino/Accelerometer problem

[Jose Luis Santorcuato]

Oh... what do you mean 17 and 18? if i change the analog ins 4-5 to digital
output?... ill try this solution and tomorrow i send a post.

Very thanks for the support

Best regards from Chile

JOsé




2009/11/1 Martin Peach <martin.peach at sympatico.ca>

> It should work with the [comport] object.
> You need on the Arduino to set analog 4 and 5 as digital outputs (I think
> they are digital 17 & 18). Set the pin connected to the accelerometer
> module's 5V pin HIGH and the Gnd pin LOW. That will provide enough current
> for the accelerometer to work. Then you need to do analogRead() on the three
> accel pins and split each value into two bytes. Then send all six bytes via
> Serial.print(val, BYTE) commands.
> In a Pd patch you need to reassemble each packet of six bytes into three
> floats.
> Obviously the baud rate must be the same at both ends but it can be very
> fast, like 115200.
> It might help to have the Arduino send samples only when requested by the
> Pd patch, that way you can be sure of getting the six bytes into the correct
> frame, otherwise it's not certain which is the first (unless you add a
> header byte that is always the same).
>
> I find it easier to do this without using the firmata or pduino stuff,
> because it's an unusual implementation. If you want to use pduino, it's
> better to connect your module power pins to the Arduino power pins and just
> read analog 0 1 2.
>
> Martin
>
>
>
> Jose Luis Santorcuato wrote:
>
>> Thanks, that is the regular connection, but not working... maybe the
>> capacitor... in the past i worked with ir, potentiometer, bottoms, all the
>> sensors, but the acellerometer dont work in pd...very strange...
>> When y program in Arduino all works fine.... how can i connect the serial
>> to Pd?... with the same firmatas objetc?
>>
>> Thanks a lot, but the sensor not working in the habitual order.
>>
>> Somebody?
>>
>> Thanks a lot people
>>
>> Best regards
>>
>> Chile
>>
>> JOsé
>> 2009/11/1 slimboyfatboyslim <slimboyfatboyslim at slimboyfatboyslim.org<mailto:
>> slimboyfatboyslim at slimboyfatboyslim.org>>
>>
>>
>>    hi,
>>
>>    Is there any specific reasons why you connect both GND and VCC to
>>    AIN of Arduino?
>>
>>    The typical connection should be
>>    AXL (GND) -> Arduino (GND)
>>    AXL (VCC) -> Arduino (3V3) (check the  datasheet if VCC = 1.8V-3.8V)
>>    AXL (X) -> Arduino (A0)
>>    AXL (Y) -> Arduino (A1)
>>    AXL (Z) -> Arduino (A2)
>>
>>    enable analog in in firmata, then should give you some readings,
>>
>>    use a small capacitor across XYZ and arduino to avoid noise
>>
>>    On Nov 1, 2009, at 12:26 AM, Jose Luis Santorcuato wrote:
>>
>>
>>>    Dear friends, I'm working on connecting to the pduino arduino with
>>>    a three-axis accelerometer (sparkfun), when I program from the
>>>    arduino ide I connect the three axis, gnd and voltage directly to
>>>    the five analogs ins and from the console terminal reads well,
>>>    what would be the possibility of connection to incorporate the
>>>    sensor into pduino?.
>>>
>>>    The connection I make in the arduino ide bd begins with 9600, but
>>>    the firmata works to 57,600 bd.
>>>
>>>    How do the circuit?, or does it need to be rewritten from the
>>>    firmata?.
>>>
>>>    I send the picture of Igoe conecction and works fine (in arduino ide).
>>>
>>>
>>>    Best regards
>>>
>>>
>>>    José Chile
>>>
>>>
>>>
>>>    --    http://www.chilemigra.cl
>>>    http://arselectronicachile.blogspot.com
>>>    http://www.myspace.com/santorcuato
>>>
>>>
>>>    <ArduinoADXL322.jpg>_______________________________________________
>>>    Pd-list at iem.at <mailto:Pd-list at iem.at> mailing list
>>>
>>>    UNSUBSCRIBE and account-management ->
>>>    http://lists.puredata.info/listinfo/pd-list
>>>
>>
>>
>>
>>
>> --
>> http://www.chilemigra.cl
>> http://arselectronicachile.blogspot.com
>> http://www.myspace.com/santorcuato
>>
>>
>>
>> ------------------------------------------------------------------------
>>
>>
>> _______________________________________________
>> Pd-list at iem.at mailing list
>> UNSUBSCRIBE and account-management ->
>> http://lists.puredata.info/listinfo/pd-list
>>
>
>


-- 
http://www.chilemigra.cl
http://arselectronicachile.blogspot.com
http://www.myspace.com/santorcuato
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20091102/66845c44/attachment.htm>