Photon, Electron, and Core
The first prototyping board that was released by Particle (then known as Spark) was called Core. The subsequent prototyping boards released by Particle were called Photon and Electron. Core was superseded by the more powerful, faster, and less expensive Photon. Sale of Core has since been discontinued at Particle's online store at https://store.particle.io/, and hence, we will primarily discuss the Photon and the Electron. At the end of this chapter, we do a feature-wise comparison of the boards. The comparison can help one arrive at the most suitable board for one's project needs.
The Spark Core was the first IoT prototyping board released by Spark (now known as Particle) in a successful Kickstarter campaign ...