I use 6 analog inputs all of the time on Mac and Linux. I've never
used 19200 tho. Try using [comport] alone to eliminate anything in
[arduino]. Maybe there is a bug in comport on vista?
.hc
On Apr 11, 2008, at 3:17 PM, nick burge wrote:
Thank you Hans, am I being unrealistic in trying to have six
analog inputs active all at once? I know you said that was a lot of
data, but I run a fairly powerful laptop with a dual core Centrino
processor, and Windows task manager reports only a modest demand
on the cpu of around 30% when I have the patch running and all
inputs active, so it seems to be an error in timing or
syncronisation rather than simply overstressing the system that
causes this....I've taken the patch right down to the basic arduino-
test patch, but still the crashes occur when I activate more than 2
analog inputs. I'll experiment with different baud rates, go back
to a usb connection rather than the xbee wireless system and keep
trying to identify the source of the problem. I'll get back to you
if I learn anything new. Below is the data produced by the event
viewer in Windows in case it means anything to you.
pd.exe
0.0.0.0
47148d16
pd.dll
0.0.0.0
47148d15
c0000005
00004e04
17ec
01c89bd26543018e
Nick.
From: Hans-Christoph Steiner [mailto:[EMAIL PROTECTED]
Sent: 11 April 2008 18:30
To: nick burge
Cc: Pd List
Subject: Re: [PD] pduino and FSRs
Let's keep this on the list since it could be generally useful.
In order to get to the next step, you should try to isolate the
problem, to see where the crash is actually happening. Otherwise,
there are far too many possibilities for me to try guessing.
Ideally, you could make a simple patch that reproduces the crash.
.hc
On Apr 11, 2008, at 3:01 AM, nick burge wrote:
Firmata, Pduino and xbees. are all set to communicate at 19200 baud.
Nick
From: Hans-Christoph Steiner [mailto:[EMAIL PROTECTED]
Sent: 10 April 2008 23:57
To: nick burge
Cc: Pd List
Subject: Re: [PD] pduino and FSRs
What baud are you running each at? IIRC, the XBee needs a strange
value.
.hc
On Apr 10, 2008, at 5:52 PM, nick burge wrote:
I wish I knew. I'm loading the arduino-test patch with no other
objects or abstractions so as to eliminate other suspects. Still
PD crashes when I enable more than 2 analogIns.
Would it help to speed up or slow down the xbee connection?
From: Hans-Christoph Steiner [mailto:[EMAIL PROTECTED]
Sent: 10 April 2008 23:12
To: nick burge
Cc: Pd List
Subject: Re: [PD] pduino and FSRs
The code and the electrics are quite separate. If the electrics
work with one firmware, then they'll work with another. The
question is, what is the "it" that grinds to a halt.
.hc
On Apr 10, 2008, at 4:17 PM, nick burge wrote:
Yes, I've got the latest version....maybe a silly question...but
could it be that Pduino is optimised for sensors working on a
supply of 5v. because the phidget voltage dividers i've got my
FSRs attached to come with a potentiometer that alters the
resistance of the circuit...with pduino i can only activate 2 at
a time before it all grinds to a halt...on arduino2PD i can
activate all six without any problem. Strange.
Nick.
From: Hans-Christoph Steiner [mailto:[EMAIL PROTECTED]
Sent: 10 April 2008 21:51
To: nick burge
Cc: Pd List
Subject: Re: [PD] pduino and FSRs
I've never run on Vista before, so I can't say much about that.
I have run on Debian, Ubuntu, and Mac OS X. It shouldn't matter
what is generating the data on the arduino, the messages coming
to Pd via the serial port should be all the same.
Are you using the latest version:
http://at.or.at/hans/pd/Pduino-0.3.1.zip
.hc
On Apr 10, 2008, at 12:57 PM, nick burge wrote:
Hello Hans-Christoph, I am using PD 0.39.3 extended. on a
windows vista system. Its PD that crashes, or "stops working"
as Vista so nicely puts it, when I connect the FSRs.
I have arduino connecting via wireless xbees at 19200 baud.
I also use an infra red distance sensor that gives no problem.
I've been routing the data from the FSRs through the autoscale
object.
Maybe I should find a way to reduce the amount of data being
sampled...every 40ms for example? How would I do that?
Nick.
From: Hans-Christoph Steiner [mailto:[EMAIL PROTECTED]
Sent: 10 April 2008 17:25
To: nick burge
Cc: Pd List
Subject: Re: [PD] pduino and FSRs
Which program crashes? Which version are you using? You will
get a lot of data, from 6 sensors, Pduino/Firmata will read
them all every 20ms. I have never seen a crash using [arduino],
except when I unplug the arduino when Pd is connected to it, so
I suspect the problem lies elsewhere.
.hc
On Apr 10, 2008, at 11:16 AM, nick burge wrote:
I have a little problem using Pduino and some force sensing
resistors that I am using in conjunction with phidget voltage
dividers....they seem to crash the program as soon as I
activate more than 1 at a time.....
Should I be applying some sort of filter to the data stream?
Arduino2PD seems more robust, allowing me to activate all 6
analog inputs at once.
Nick Burge.
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