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Penguin Tutor - Legal and Site Information

The content of this website is protected by copyright. Unless otherwise specified the material from this web site, or any related web sites may not be copied, modified, republished, posted, transmitted, or distributed in any way, without the prior written permission from the owner of the site. This includes, but is not limited to the quiz questions, the tutorial and guide documents, and any photos. Some content is provided with additional licensing depending upon its function and type which is listed below.

Every effort has been made to ensure the accuracy of information presented. However, no warranty or guarantee, expressed or implied, concerning the content or accuracy of the information stored and maintained within this information service is made. The information is presented 'as is'.

Circuit Diagrams Licensed under Creative Commons

Electronic circuits and circuit diagrams are made available under the creative commons licence allowing reuse and modification. See the license information below.

Creative Commons License
Electronic Circuits on by Stewart Watkiss is licensed under a Creative Commons Attribution 2.0 UK: England & Wales License.

Software and Firmware

Unless otherwise specified source code released on this site is licensed under the GPL license version 3. Full details of the license is provided with the software and is available on the GPL 3 License Page.


Where possible all apects of this website are designed to be accessible, and designed to be in-line with the W3C HTML / XHTML standards. The page layout is created using CSS templates. The style sheet can be turned off, or overridden to provide an alternative layout if required.

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This website uses adverts and links to other websites to help support the running costs of developing and running my websites. This is to ensure that the site can be provided for users to access free of charge. This may include dedicated advert areas and/or links within the main body of the pages.

Unless the page content is specifically labelled as a sponsored entry the content is based on impartial information based on products that I have normally purchased myself; which I have "purchased" in leiu of payment from advertisment revenue; or which have been borrowed for the purpose of the review.


These terms and conditions may be changed at any time. It is condition of use of the site that you agree with the current terms and conditions in force when accessing the site.

Explanation of terms


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