at first! cool works above! keep on going ;]

i add a little of the fun from my own just with more simple analogue way by playing with some cables etc. i hope to have some time to make more complex system with it to be able to control the output a bit more…
two videos here: http://www.lostpostservice.net/img/pash_galllrija/080406-pvx/pvx_imgs.html

i dont have MAX unfortunately, but i did manage to get some nice results with the PWM channels on the arduino using an audio input split into bass mid and treble frequencies with an additional circuit feeding the analogue in pins.

you could probably use the uVGA module to create the Vsync and Hsync signals, but that would be a huge waste of such a device. from what i now understand, arduino isnt capable of producing the correct timing info, so what ever i had working must have been a fluke. there’s a guy on brians vidisynth forum who is trying to recreate them on a PIC, so it’ll be interesting to see what he comes up with.

i’ve just downloaded the new arduino software for my g4, its installed and ready to go. i’m going to try and feed an audio signal into the analogue pins to creat pwm signals from the digital outs to see what happens. if nothing else it saves me from doing house work…. ;o)
my knowledge of arduino is limited, and half of your sentence above confuses the hell out of me….. i’m more hardware orientated than micro controllers, but i’m slowly learning for this led wall i’m (still) working on, and have been for the past year.

I’m looking forward to seeing what you come up with!

I send the Arduino MIDI data, and it simply maps the note number and velocity to a cycle loop delay time and sets the state of the digital pins which are directly connected to the RGB lines. This is more of a simple test, but it is all so much fun!

i love the use of the arduino to produce the signals. are you sending it midi data or something to pulse the digital pins? i’ve just dug my arduino out to try a few things.

yeah its the data lines for the rgb signals that are cut and replaced with a new source, the ground lines for the RGB and everything else are intact. i built a wee break out box for myself which makes things a lot easier, and i have a schematic for a pcb i made up to do the same job. just remember to connect any pattern generation circuits to the ground lines of the vga cable.
you can pump audio straight into the data lines, but there’s a whole host of other tricks you can do with a bit of experimenting. these experiments just used audio, an inverter, a 4066 and sync signals tapped from the vga cable/breakout box in various formations to generate patterns.

i’ll dig a few things this coming week to update these pages.