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It's easier than ever to make your own gadgets. It's essentially a microcomputer that you can hook all sorts of neat things up to and that you can make full-fledged projects out of. You're going to be working with pretty low-level concepts, so it's important that you familiarize yourself with all of these before you jump into Arduino programming.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.