We've featured a good number of DIY projects that can inspire an afternoon soldering session. But what if you lack for some key components? One Instructables poster points to a host of free sample ...

Ecircuitslab.com provides a list of free electronic circuit schematics diagram in all categories like audio circuits, radio & RF circuits, power supply circuits, light circuits, telephone circuits, ...

Is a program to help you draw circuit diagrams. It comes complete with symbol libraries to get you started straight away. As well as being able to simply print your designs, you can use TinyCAD to ...