SparkFun is my preferred parts and… SparkFun is my preferred parts and component supplier. Part of the goodness comes from the fact that I can get stuff in a day or two (I live in Arvada Colorado). My only complaint is occasionally they'll use a complex part whose manual is covered under an NDA from the manufacturer. This makes it difficult to impossible to open source my code that uses it.

Home Hobbyist Kudos to SparkFun Sparkfun has a very complete selection of products from processors, sensors, relays, control boards, etc for the home hobbyist or the professional designer. Products have always met or exceeded my expectations. Their Web site provides fantastic documentation for setting up and using must of their devices. And the YouTube videos are excellent resource and usually entertaining as well. If I were 20+ years old I would beg to work for this company.

More consistent and detailed product documentation. A more consistent approach to providing documentation on products would be appreciated. Adafruit product documentation always follows the same format and is more detailed, hence I like them better.

One Stop Shop for Electronic Prototypes Sparkfun is an excellent source of educational and prototype electronic goods. They are a distributor and manufacturer you can trust for small batch prototypes. Rather than prototype my own boards from scratch, I often start with a Sparkfun assembly and then branch out later. Sparkfun is a one stop shop for most of your IoT electronics needs.

Good documentation for your products Good documentation for your products And the documentation can (almost) always be found right from the page the product/part is order from.