[PD] Connection with sensors - new devices?
Kyle Klipowicz
kyleklip at gmail.com
Tue May 15 12:47:47 CEST 2007
Hmmm so is the size of the data chunk the issue here? It took some
looking at the patch with some super arcane int to ascii to float
wizardry to even read the values coming from one sensor.
Could you please elaborate on this? I _THINK_ that the firmware right
now is using the digital connector to measure distance with the sensor
by sending a short several-microsecond pulse, then switching to input
mode and measuring the difference between pulse widths...I'm not a
sonar expert so this is still a bit elusive to me. Does it have to do
w/ the doppler effect in some way?
It is my understanding that this requires the digital in/out to work,
but you are saying that I could do this with the analog instead? Am I
right in guessing that the issue with more than 2 sensors on an
arduino chip is the data "chunk" size, for lack of a better word, or
do I need to find some (much welcomed if recommended by you experts
out there) more physical computing background knowledge?
Thanks for saving me from an expensive electronics art master's degree
program if you can provide some tutelage!
~Kyle
On 5/14/07, Hans-Christoph Steiner <hans at eds.org> wrote:
>
> You would just send the data as an analog value, which gives you 14-
> bits of resolution. In the Arduino firmware, it would just take the
> values from the sensor and report them as a analog value using the
> Firmata protocol. The [arduino] object already understands the
> Firmata protocol, so it would just see the data as any other analog
> message.
>
> .hc
>
> On May 10, 2007, at 10:38 PM, marius schebella wrote:
>
> > I think the ultrasonic sensors send serial bytevalues and not an
> > analog value, correct? how can you connect them to the pduino? or
> > how can you connect even more of them. can firmata handle serial
> > inputs?
> > marius.
> >
> > Kyle Klipowicz wrote:
> >> Well, we are going to be using multiple sensors, so I will let you
> >> know if this code works with them, once we get to that phase of the
> >> installation.
> >> ~Kyle
> >> On 5/10/07, Hans-Christoph Steiner <hans at eds.org> wrote:
> >>>
> >>> Does this firmware handle multiple ultrasound sensors? If so, it
> >>> would
> >>> awesome to make a Firmata Ultrasound firmware. I just started
> >>> making the
> >>> Firmata protocol into a library so that people can write more
> >>> firmwares and
> >>> still use the same objects in the host software. A multiple
> >>> ultrasound
> >>> sensor would be a great first test of this library, since it
> >>> would only need
> >>> to input data.
> >>>
> >>> .hc
> >>>
> >>>
> >>> On May 10, 2007, at 5:27 PM, Koray Tahiroglu wrote:
> >>> Hello Kyle,
> >>>
> >>> I am glad that those patches worked and helped you out with your
> >>> project. I
> >>> guess big thanks goes to Hans for them, cos during that time, I just
> >>> modified his existing multi-sensor patches and developed them
> >>> further to use
> >>> in my project.
> >>>
> >>> Koray.
> >>>
> >>>
> >>>
> >>>
> >>> -------------------------------------
> >>> M.Koray Tahiroglu
> >>> Media Lab,UIAH
> >>> http://mlab.uiah.fi/~korayt/
> >>> tel: +358 50 939 02 33 ( in Finland only)
> >>> tel: +90 533 712 8245
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> On May 10, 2007, at 11:38 PM, Kyle Klipowicz wrote:
> >>>
> >>> Thanks so much Koray, it works great!
> >>>
> >>> I see you used the same Arduino code for the sensor as I had found,
> >>> and your Pd patch is very well-written and well-commented.
> >>>
> >>> I appreciate this, because I did not want to try coding
> >>> microsecond-level events in Pd by porting the Arduino code and using
> >>> firmata, and I didn't want to use the SimpleMessaging library
> >>> either.
> >>> This helps us out a TON!
> >>>
> >>> ~Kyle
> >>>
> >>> On 5/8/07, Koray Tahiroglu <ktahirog at uiah.fi> wrote:
> >>> Hello Kyle,
> >>>
> >>> Here I attach .pde files for arduino to read ultrasound sensors
> >>> (they might
> >>> have already there in the arduino sketchbook already, but just
> >>> sending to be
> >>> sure) and also modified Hans pd patches for arduino-pd
> >>> communication. I
> >>> didn't test them lately, but they used to be working fine.
> >>>
> >>> best,
> >>>
> >>> Koray.
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> -------------------------------------
> >>> M.Koray Tahiroglu
> >>> Media Lab,UIAH
> >>> http://mlab.uiah.fi/~korayt/
> >>> tel: +358 50 939 02 33 ( in Finland only)
> >>> tel: +90 533 712 8245
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> On May 8, 2007, at 5:48 AM, Kyle Klipowicz wrote:
> >>>
> >>> Hi Koray~
> >>>
> >>> I am working on a group project that involves Arduino and the
> >>> parallax
> >>> PING ultrasonic sensors. Would you be willing to share your Pd
> >>> patches
> >>> regarding this usage, as indicated in this email?
> >>>
> >>> Thanks in advance!
> >>>
> >>> ~Kyle
> >>>
> >>> On 12/22/05, Koray Tahiroglu <ktahirog at uiah.fi> wrote:
> >>> hello Hans,
> >>>
> >>> I made couple of test patches just to see the range and the
> >>> stability
> >>> of the values that I receive from sensors. At the moment, I am
> >>> testing ultrasound sensor and also self made solar panel board
> >>> sensor. After this weekend I will begin to construct my final
> >>> patches
> >>> for a gig that will be on 14th of January. I can upload the patches
> >>> on PD site. During our Arduino+PD workshop two weeks ago, we
> >>> basically started to develop your multi-sensor patch, which actually
> >>> David had changed couple of things during a previous workshop in
> >>> Vancouver. All in all i think it is such a nice idea to make easy-
> >>> to-
> >>> use framework for sensor boxes. Especially most of the Mac OS X
> >>> users
> >>> have problems with comport communication.
> >>>
> >>> Koray.
> >>>
> >>> -----------------
> >>> M.Koray Tahiroglu
> >>> Media Lab,
> >>> University of Art and Design Helsinki, TaiK
> >>> Hameentie 135C 00560 Helsinki Finland
> >>> http://mlab.uiah.fi/~korayt/
> >>> http://purenoise.uiah.fi:8000/
> >>> tel: +358 40 754 8449
> >>> fax: +358 9 75630 555
> >>>
> >>>
> >>> On Dec 21, 2005, at 9:32 PM, Hans-Christoph Steiner wrote:
> >>>
> >>>> Do you have an patches that you are willing to share? I want to
> >>>> see how people are using various boards with Pd.
> >>>>
> >>>> I will be working a lot with sensor boards in the coming months,
> >>>> including the Arduino, MultIO, and STEIM's junXionbox. Basically,
> >>>> I want to make an easy-to-use framework like the [hid] toolkit for
> >>>> sensor boxes. So basically, I'll be making high-level abstractions
> >>>> to interface these boxes which output data in a floating point
> >>>> range of 0-1. That means you can then use all of the mapping
> >>>> objects that I wrote for the [hid] toolkit. Actually, I think the
> >>>> grand plan will be to make a separate library of mapping objects,
> >>>> and then librariess for HIDs, sensor boxes, etc.
> >>>>
> >>>> .hc
> >>>>
> >>>> On Dec 20, 2005, at 2:10 PM, Koray Tahiroglu wrote:
> >>>>
> >>>>> I've been using arduino with PD heavily since the beginning of
> >>>>> December, I am happy with the ready sensor connections as well as
> >>>>> self made sensors. And Arduino is an open source microcontroller
> >>>>> hardware, http://www.arduino.cc/
> >>>>>
> >>>>> cheers,
> >>>>> Koray.
> >>>>>
> >>>>>
> >>>>> On Dec 20, 2005, at 7:55 PM, pd-list-request at iem.at wrote:
> >>>>>> There are also the arduino and wiring boards that talk nicely
> >>>>>> with many progs.
> >>>>>>
> >>>>> -----------------
> >>>>> M.Koray Tahiroglu
> >>>>> Media Lab,
> >>>>> University of Art and Design Helsinki, TaiK
> >>>>> Hameentie 135C 00560 Helsinki Finland
> >>>>> http://mlab.uiah.fi/~korayt/
> >>>>> http://purenoise.uiah.fi:8000/
> >>>>> tel: +358 40 754 8449
> >>>>> fax: +358 9 75630
> >>> 555_______________________________________________
> >>>>> PD-list at iem.at mailing list
> >>>>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/
> >>>>> listinfo/pd-list
> >>>>>
> >>>>
> >>> ____________________________________________________________________
> >>> __
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> >>>>
> >>>
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