Safety and using electronics

This book encourages you to experiment and connect your own circuits to the general-purpose input/output Raspberry Pi GPIO pins. This is an excellent way to learn about electronics and software at the same time. However, it is important to remember that the GPIO pins are unprotected, and if wired incorrectly, can easily be damaged or even cause the Raspberry Pi to stop working altogether. Therefore, care should be taken to correctly follow the instructions and wiring diagrams and check everything carefully before switching the Raspberry Pi on.

All the circuits, modules, and components described in this book are intended as demonstration examples only. They have not been tested for extended use and should not be left unattended or should not be used in safety-critical applications without adequate safeguards in place. Remember that all electronics must undergo rigorous safety testing to ensure that in the event of failure, there will be no risk of harm to people or property.

You should never attempt to modify or alter devices that are connected to mains electricity without proper training, and you must never directly connect any homemade devices to the mains supply.