The electronics section of PenguinTutor.com is still being created. I work on the web site in my spare time which I need to fit around my work, family and volunteer commitments. As a result it will take some time to fully develop the site so the content will increae in future.
You can check back regularly or follow significant updates on:
PenguinTutor Facebook page or
PenguinTutor on Twitter.
Please view the copyright information regarding use of the circuits.