Serial Communications

Serial Communications

Ideas and thoughts are shared with people through speech, text, or some other form of communication.  This is how one knows, or at least has some idea of, what the other is thinking.  Electronic devices are similar.  Without communication, devices and people would be isolated in the cosmos.  Like language, devices use sets of standards and protocols to accomplish communication. In this post, I’ll introduce briefly parallel communication.  Next I’ll be covering the most fundamental communication methods of serial communication. …

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Signals – Digital, Analog, and PWM

Signals – Digital, Analog, and PWM

In this post I’ll be covering fundamental electronic signals.  These will establish a foundation for us to work from as I begin to cover more advanced signaling technology.  First, we will cover digital signals.  These are the most basic since they are either on or off.  Next, we cover RC Time circuits which allow us to use a digital port to read an analog condition.  We’ll follow that up with analog signals and how we read them electronically.  Next, I’ll…

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Controller ins and outs

Controller ins and outs

Now I would like to return back to home automation and control.  There are basically three components of the system; these are input devices, controllers, and output devices.  Lets start by covering the heart of the system, the controllers. In this section I’ll cover the controllers.  They fall into three categories, device, communications, and central. The central controller will be the Raspberry Pi.  It is Rome and all roads lead to it.  It takes input, produces output, and is what…

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