If you are interested in building the change machine and wish to use the code, I am asking for a small contribution towards building parts and running the site. Please see the video below which shows how to make the change machine.
Buy the code for the change machine by hitting the button below. I will email you a link to the code within 48 hours. If you want to send me an email as well to inform me of your payment, this sometimes speeds things up. email@example.com
Arduino Code for Change Machine – Text File and INO Arduino File