Hi all
As you know, Amiga computers have direct support for lightpen into the hardware.
Has anyone tried one on his amiga?
I'm thinking on build one, but I don't know any software for It.
Could you point me any tool/software for lightpens?
They are easy to build, but always check your local thrift store first

If you just want to experiment, lightguns work on a similiar principle, and you used to be able to cheaply find lots of them from old game consoles in thrift stores, yard sales, etc. They can be converted for direct Amiga use as a lightgun for Actionware games:
http://www.amigans.net/modules/myalbum/photo.php?lid=160&cid=3If it works and you like it, you should be able to hack the innards into a pen sized housing.
Come to think of it, I may have an Actionware Amiga lightgun somewhere in the boxes; hmmm.