Choosing a platform for teaching microcontroller programming

While planning a book on programming microcontrollers I've been trying to settle on a small group of microcontrollers that could be used for examples. Every couple of years I do this to myself.  Below are a few examples, including the ubiquitous Arduino UNO with an 8-bit chip, as well as the FRDM-KL25Z and Adafruit Metro […]