Popular stencils

Free
Barco E2 Frame and Cards

Barco E2 Frame and Cards

This is a comprehensive stencil of the Barco E2 frame with all available I/O cards. You can un-group and move the cards around and re-group.

Free
RoboMind graphics

RoboMind graphics

some graphics from robomind (http://www.robomind.net/en/), which is software specifically developed to support technology education. you can now build robomind maps directly in OmniGraffle.