AdaFruit “Feather” Cortex-M4
Adafruit Industries is an open-source hardware company based in New York City. It was founded by Limor Fried in 2005. The company designs, manufactures and sells a number of electronics products, electronics components, tools and accessories. It also produces a number of learning resources, including live and recorded videos related to electronics, technology, and programming. The Feather development boards constitute Adafruit’s broadest platform of “Arduino-like” boards. The boards all share similarities in that they have the same form factor, same pinout, similar microcontrollers, feature lithium polymer battery charging. Each board has a special feature in addition to the microcontroller breakout, such as Bluetooth, Wi-Fi or cellular network connectivity or built-in prototyping space or SD card communication. The name “Feather” comes from the fact that the boards are small, thin, light and easily powered from a battery. In addition to the boards themselves, Adafruit engineers and manufactures “FeatherWings”, which are expansion cards allowing the addition of features such as an LCD, a NeoPixel array or DC motor drivers.