Pd-list August 2016

pd-list@lists.iem.at

55 participants
82 discussions

Re: [PD] raspberry pi 3: zexy problem
by rolfm＠dds.nl 17 Aug '16

17 Aug '16

Roman wrote > Please be specific about what exactly can't be created. Could it be > that this patch was created with Pd-extended and uses object names with > the library name in front of the object name, like [zexy/symbol2list]? > the patch is created over a long period; first in extended, recently switched to Vanilla. on Windows 10 it runs in Pd-ext 43.4 as well as in Vanilla 47.1 (with the needed libs loaded). on OSX i didn't test Vanilla yet. here is part of the console messages: d. Platform detected: Linux-armv7l-32bit list2symbol ... couldn't create zexy/list2symbol ... couldn't create list2symbol _ ... couldn't create list2symbol ... couldn't create s2l ... couldn't create zexy/date ... couldn't create l2s ... couldn't create l2s ... couldn't create time ... couldn't create l2s ... couldn't create l2s ... couldn't create l2s ... couldn't create zexy/makesymbol %s%s%s-%s.%s.%s ... couldn't create s2l / ... couldn't create thanks for looking into it. rolf

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raspberry pi 3: zexy problem
by rolfm＠dds.nl 16 Aug '16

16 Aug '16

raspberry pi 3, raspbian jessie. Pd 46.2 from raspbian repository. zexy downloaded with deken. loading a (complicated) patch which works in Windows and OSX containing a [declare -stdpath zexy -stdlib zexy] but the zexy objects can't be created. in a blank patch: [declare -stdpath zexy -stdlib zexy] [s2l] works. any hints? rolf

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Fwd: comport rxerrors
by Martin Peach 16 Aug '16

16 Aug '16

This may be interesting to comport users on Win10: ---------- Forwarded message ---------- From: Maxime Harazi <maxime.harazi(a)normale.fr> Date: Tue, Aug 16, 2016 at 9:06 AM Subject: [PD] comport rxerrors To: chakekatzil(a)gmail.com Hey, I saw your the thread about comport error with Win10 on the archive of the forum, and I don't know how to answer it. I had the same problem and I just installed the last update of Win10 (https://www.microsoft.com/fr-fr/software-download/windows10) and it solved my problem. Hope you'll be able to forward the fix to the forum. Cheers, Maxime.

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stepper control
by ray Y 15 Aug '16

15 Aug '16

From: IOhannes m zmölnig <zmoelnig(a)iem.at> To: pd-list(a)lists.iem.at Subject: Re: [PD] stepper control depends... you really have the same jitter when doing signal processing, and yet you don't hear it. (just hook your [metro 0.1] to a [tgl] -> [vline~] -> [dac~]) why? because [dac~]/[adc~] synchronize the jittery input data with a real-time clock. so Pd itself is accurate enough. the problem is that you cannot really hook a number box to your stepper motor, you need some object that translates the in-patch messages to real-world events. and this object needs to properly handle the timed messages. since ray did not mention how he gets the data to the stepper motor, there is little additional help I can give. gfmdsr IOhannes yes, after lots of tests i discover the polarity switching sequence to make the motor spin continuosly in one direction or the other. of course the method of using a metro for banging each pulse runs into problems when going a bit faster and it completely collapse. im using an l-298 h bridge with an arduino and firmata and doing all the control with digital pulses. there is another little stepper driver controller that can work with only 2 instructions, the direction and the pulse. it could be really cool if it where possible to do the control with an oscillator as Roman suggested but then how would you connect the 4 cables of the bipolar stepper? is there a tutorial on how to drive steppers with the same control you drive sound into a speaker? thanks r.y

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stepper control
by ray Y 13 Aug '16

13 Aug '16

i wanted to make a patch to drive stepper motors with pd but run into a serious limitation,i need to run in microseconds and pd can only run at a milisecond time grain. what is the way around this? are any of you guys running stepper motors with pd, without any other programs? or do you have to by force use another program? thanks r.y

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External libraries not found via declare object or startup flags (pd 0.47.1, linux)
by Angelo Arcadi 11 Aug '16

11 Aug '16

Dear list, I get an unwanted beheaviour with the location of the externals libraries installed on pd 0.47.1. Pd was compiled from sources, on ubuntu 16.04 linux running on the odroid-c2 board (armv8-64) I installed the externals I needed via apt-get install pd-name_package. The package got installed in /usr/lib/pd/extra. I have added such folder in the search path. Now in pd I want to use some of those externals, let's say "packOSC". At this stage If I create an object with "osc/packOSC" it works. I want to avoid using the name of the package before each external I need to use. So I created an object with "declare -stdpath /usr/lib/pd/extra/osc". The problem is that pd seems to ignore that command, or the analog ones with -path and -lib. So I tried to set the startup flags e.g. -lib /usr/lib/pd/extra/osc but when I launch pd I get "can't load library" Any suggestion or workaround? Is there maybe a bug? Thanks in advance Best Angelo

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when is it necessary to manually free inlets/outlets?
by Christof Ressi 10 Aug '16

10 Aug '16

Hi, do you ever actually need to call void inlet_free(t_inlet *x) and void outlet_free(t_outlet *x) explicitly when writing externals? I'm talking about code like this: int i=0; for(i=0; i<x->x_numouts; i++) { outlet_free(x->x_out[i]); } freebytes(x->x_out, x->x_numouts*sizeof(t_outlet*)); I see that you should free the t_outlet* array which holds the references to your outlets but I thought that the outlets itself get deleted automatically when the object's lifetime expires... most of the time I don't see people freeing inlets/outlets, so I was wondering if there are situations where it *is* necessary? Christof

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pd 0.47.1 OS X TK 8.6 + retina builds
by Dan Wilcox 10 Aug '16

10 Aug '16

I’ve been off/busy with moving & summer fun, but here’s a new set of test builds for OSX with the latest 0.47.1: http://docs.danomatika.com/pdbuilds <http://docs.danomatika.com/pdbuilds> I haven’t gotten around to testing these on older versions of OS X at school yet, so no new compatibility changes so far. -------- Dan Wilcox @danomatika <https://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/>

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using my abstractions with PdParty (best practice)
by mitchell turner 09 Aug '16

09 Aug '16

Dan, I have finally gotten around to trying out PdParty and absolutely love it. Thanks for all of the work you did getting this to run. I’m sure I’m not the only one who appreciates your work. I have a question regarding how best to use my own abstractions within PdParty on iOS. I have been successful using my abstractions two ways: 1) copy my abstraction into the PdParty directory that contains my main patcher. 2) copy my abstraction into the main “lib” directory inside PdParty. I guess my question is: what is the best place to put user-created abstractions within the file structure of PdParty. For those interested, I’m using the latest version of PdParty on iOS 9.3.4 and Pd Vanilla 0.47.0. Thanks again, Mitch

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[Declare] undocumented “Feature”
by Lucas Cordiviola 09 Aug '16

09 Aug '16

Hi Miller, Following Björn thread: https://lists.puredata.info/pipermail/pd-list/2016-08/115875.html I think that in [declare]-help : -stdpath “add to search path , relative to Pd” gives the impression that is just for the “extra” folder. It will be more accurate if its mention that -stdpath also covers: [pd more on -stdpath and -stdlib] -stdpath and -stdlib also includes searching the following locations: Windows User-specific : %AppData%/Pd Global: %CommonProgramFiles(x86)%/Pd Mac OS X User-specific: ~/Library/Pd Global: /Library/Pd (you need to create the "Pd" folder) GNU/Linux Package manager: /usr/lib/pd/extra User-specific: ~/pd-externals Global: /usr/local/lib/pd-externals ---- I only tested the WINDOWS location and everything works. I`m not sure on the others OSs. Am I right? Salutti, Lucarda. Mensaje telepatico asistido por maquinas.

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Pd-list August 2016