Great experience with Sparkfun My experience with Sparkfun is so good because they always have excellent tutorials and code examples for the gear I buy from them. Although my applications are often unique, their stuff is practically plug and play.

Easy to find layout and schematics Easy to find layout and schematic, in better than pdf or Gerber (i.e editable eagle files). This saves the additional steps is having to search for these open source files on git (like SparkFuns' competitor mandates)

Sparkfun surveyor/gnss reference station Great product…set the fp9 up with esp32 thing+ uploading data to rtk2go (free) and used the surveyor with an android phone over BT (doesn’t play well with iPhones). Designed layout in qgis (free) and staked out in swmaps (free)…worked perfectly for laying out a vineyard with a awe inspiring degree of accuracy.

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.

Sparkfun has one of the best tutorial… Sparkfun has one of the best tutorial systems and data sheets available of all DIY electronics suppliers. Which makes it great for new tinkerers to learn.