O meu primeiro instructable sobre controlar motores com o L293D e Arduino
(https://lusorobotica.com/proxy.php?request=http%3A%2F%2Fblog.makezine.com%2FFFA1KW7FTY4CX3X.MEDIUM.jpg&hash=abcd2cbcea3314b49d446fefe04a6d6436c9e9a6)
http://www.instructables.com/id/Control-your-motors-with-L293D-and-Arduino/ (http://www.instructables.com/id/Control-your-motors-with-L293D-and-Arduino/)