Fritzing is an open-source hardware initiative to support designers, artists, researchers and hobbyists to work creatively with interactive electronics. We are creating a software tool, a community website and services in the spirit of Processing and Arduino, fostering an ecosystem that allows users
to document their prototypes, share them with others, teach electronics in a classroom, and layout and manufacture professional pcbs.
An example if Fritzing made Circuit. And Arduino UNO connected with an LCD module.