Many circuit diagrams, explanations and software packages are made available on these pages, free of charge. I hope they will stimulate your interest in electronics as a hobby, and help you design and program your own stuff. Perhaps the information and ideas you find here will even help you choose a profession,

I've had plenty of feedback indicating that such things happen, and that is quite a reward in itself. However, should you wish to make a donation - to be set apart for further development of this web site - then PayPal is the most economical way of doing it: