External Devices
SPI, I2C, and some other protocols get really complex, but there's a whole other world of devices we can also use with our Johnny-Five projects. These technically fall outside the scope of the Johnny-Five library, but works well with the library due to their use of Node.JS. Let's take a look at the "why" and the "how" of external devices with Johnny-Five.
Why External Devices?
Microcontrollers are amazing! They can do a litany of things—input, output, and so on - but sometimes you see a new device that doesn't plug in to a microcontroller. Perhaps it contains a microcontroller of its own—such as a quadcopter or a drone! This section covers the use of these devices with Node and integrating them into your Johnny-Five projects.
Some really cool examples that have been integrated into Johnny-Five projects are as follows: video game controllers; the LeapMotion controller, a gesture sensor that tracks hand position and movement; and Wi-Fi-enabled quadcopters, such as the Parrot...
