The site Open Electronics recently posted a step-by-step guide to using the EAGLE PCB design software to make your own custom Arduino shields. EAGLE is a popular choice for hobbyists because it’s cross-platform and has a free limited version for non-commercial use. Not only that, but the PCB design files for the Arduino boards themselves can be downloaded in EAGLE’s file format. So if you’re interested in doing away with solderless breadboards or perfboards in your Arduino project and are looking for something with a little more polish, check out this tutorial for how to get started. [via Electronics-Lab.com]