Hi,

I started using PureData a few month ago. Mostly doing some live projection stuff from pinhole pictures I have made and a webcam I use for masking, like in BW printing. I need some controllers to keep my hands off the laptop I use.

I'm running the latest Pd extended version with the recently updated GEM extra under Windows Vista. It's a tablet PC, Lenovo X61t without the (finger) touchscreen, just stylus interaction.

I have a cheap Behringer BCR2000 that works fine after making a usable one from two half dead ones.
There is no lag between turning a button on the controller and the effect in the patch.

I just bought a Korg NanoPad controller as well.
I tried the native and Korg Midi drivers. I have a 2 second lageven in the Midi test patch included in Pd with or without the other controller connected. I was looking forward to it's XY pad... Too bad... it's totally unusable.
Just to make sure I tried it in Ableton Live which is probably one of the pieces of software for which most controller drivers are optimized. It works perfectly. So I guess there is some trouble between pd and the drivers.

Has anyone here any experience from such hardware?

thank you
Pierre-Olivier

www.puffskydd.net
www.flickr.com/photos/pob31
www.dailymotion.com/puffskydd

i think it depends on your audiocard configuration in pd (audio settings)...if you are using it to control a 3rd part synth or something else

i use korg drivers for my korg nanokontrol, asio drivers with a 4ms latency for audio and it works fine (winxp).

Thanks for your reply. But I have no audio output, just video using GEM in this case.

Besides the problem occurs with just a [ctlin] in a new clean patch and no other programs accessing the controller. This is just lag in the Midi transmission to Pd.
The BCR2000 works normally without any noticeable lag.

Just found what was wrong!
Too many Midi entries in the registry. Cleaned it up with some m-audio util. (MIDIFix)
Works perfect now.

Well not so perfect. It comes back regularly to the former situation with a one or two second lag.
I tried MidiOx+MidiYoke to merge both controler info and send them to pd.
MidiOX sees everything fast even when pd has that lag.
It goes away after restarting pd. Sometimes it only take unplugging and replugging the controlers and updating the Midi menu in pd.
Any help appreciated. Thanks

ı bought my nanokontrol this afternoon.
here is the patch that ı made.
it works, enjoy.

http://puredata.hurleur.com/viewtopic.php?pid=16680#p16680

Pob, is there a fast metro in your patch? maybe one that gets hitted by a bang before the time in msec is chosen?