wacom external is intermittently giving results, any tips?

Feb 8, 2011 at 9:23am

wacom external is intermittently giving results, any tips?

I’m using version-3.1ß5 UB for Mac os X, Written by Jean-Michel Couturier, 2006, http://www.jmcouturier.com.
with an intuos style tablet (its actually a cintiq 21ux but gives the same data as an intuous)

I’m using osx, 10.5.6.

i can get it to send data to max 5.1.7, but only intermittently.

does anyone know whats wrong here?

i’ve included a version of this harmonic table using the wacom external that im having trouble with- adapted from grant muller’s processing version. eventually it will send midi out, and use pressure sensitivity.

thanks for any help.

Feb 8, 2011 at 11:16am


The problem is that wacom data is coming through the apple event system and the thread that is associated to is in low priority regarding other max threads. For computer expensive applications, I’m using a standalone that send wacom data through OSC (see attached).

You can try the last version of the wacom object (from CNMAT) :



  1. wacomrecv.maxpat
Feb 9, 2011 at 6:32am

thankyou for the reply, but i cant use the first patch because it makes my mouse pointer disapear (all i have is a cintiq to control the mouse). i dont have any mice lying around.

also the cnmat site is down. if you happen to have a copy of the wacom external v4, could you please upload it for me?

thanks for your suggestions

Feb 10, 2011 at 10:59am

I’d just like to document a fix i found in another thread for anyone that comes across this. building your own seperate patcher/runtime with the wacom external solves the problem. you can have this send a continuous osc stream of the info you want, and its there for the taking with any osc app.

Feb 10, 2011 at 11:01am

this is my built app that i run on startup.

  1. wacomdetect.maxpat
Feb 25, 2011 at 1:05am

I’ve got a Wacom Bamboo CTH-460 and it’s not on the [umenu] list of accepted Wacom tools in [wacom] object. When I try to change my tool it stops letting me use the wacom as a mouse at all. When I just try to use the wacom object as “all tools and tablets” it only polls the x/y or pressure data when I’m outside of a MAX window.

What I’m trying to do is use my tablet with the lcd object to be able to draw realistic lines by making the pensize increase with pressure so that some parts of the lines are fatter than others dependent on how hard I press.

Also I’m trying to do this for class, and feelin’ the heat! Anyone have any thoughts?

Feb 26, 2011 at 8:45pm

I’m afraid that having the tablet control the mouse cursor while having it report data when Max is in the foreground is currently impossible with that version of the wacom object. The only solution I know of is to run the wacom object in a standalone, or second version of max as JMC does.




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