pin art automatic

i am looking for a pin art system that is electronic i wish to be able to instruct each pin to move up and down a total of 100mm ideally i would have 2500 pins moving independantly of eachother so that they could build a 3d image on instruction and clear that image and do another image quickly. there have been a few attempts to do this before and i have seen examples via google search "electronic pin art for example" The system must be fast The system must be cost effective