Your safety is your own responsibility. Use of the instructions and suggestions in this book is entirely at your own risk. The author and the Pragmatic Programmers, LLC, disclaim all responsibility and liability for any resulting damage, injury, or expense as a result of your use or misuse of this information.

It is your responsibility to make sure that your activities comply with all applicable laws, regulations, and licenses. The laws and limitations imposed by manufacturers and content owners are constantly changing, as are products and technology. As a result, some of the projects detailed here may not work as described or may be inconsistent with current laws, regulations, licenses, or user agreements, and they may even damage or adversely affect equipment or other property.

Power tools, electricity, and other resources used for these projects are dangerous unless used properly and with adequate precautions, including proper safety gear (note that not all photos or descriptions depict proper safety precautions, equipment, or methods of use.) You need to know how to use such tools correctly and safely. It is your responsibility to determine whether you have adequate skill and experience to attempt any of the projects described or suggested here. These projects are not intended for use by children.

Make sure you are comfortable with any risks associated with a project before starting that project. For example, if the idea of dealing with 110V power worries you, then don’t do the projects that use it, and so on. We also don’t know about any local ordinances that might apply to you, so before you go wiring stuff in, you should check your building codes. If in doubt, have a chat with a local professional.

Only build these projects if you agree that you do so at your own risk.

Good luck, and have fun!