For the examples in this book, I have used little more than the onboard hardware of a Netduino Plus, plus a tacked-on potentiometer, so that we could concentrate on the core topic: namely, the interaction of devices over the Internet. But after taking the first steps, there are additional things you may want to do—for example, to attach other sensors and actuators to your Netduino Plus, to use other communication channels such as serial connections, or to use more powerful processors than what the Netduino Plus provides. In this section, I give an overview of the various possibilities that you have.
Sensors, Actuators, and Other Hardware Extensions
Most interfaces for simple sensors boil down to measuring electrical voltages or electrical ...