feurig posted a new topic:

I hope to have a "how to make your own arduino usb-serial programmer for less than 10 bucks using open software" tutorial out sometime next week. In the mean time a description of the current dorkbotpdx arduino programmer, the EAGLE files a pcb positive (at 600%) and the firmware for it are all at http://www.dorkbotpdx.org/blog/feurig/benito_7_the_next_big_thing