Sparkfun

SparkFun Electronics, founded in 2003, is a prominent American company based in Niwot, Colorado, specializing in the manufacture and retail of microcontroller development boards and breakout boards. It is well-known for its dedication to the open-source community, offering all its designed and produced products as open-source hardware. This approach allows enthusiasts, educators, and professionals alike to access a wealth of resources for their projects, fostering a culture of innovation and learning within the electronics hobbyist and maker communities​​.