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Month: January 2017

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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Encryption, AI, and the IoT word on the street

Encryption, AI, and the IoT word on the street

One of the last stories I read about at the end of 2016 was about a hedge fund company and its use of AI, (Hedge fund turns to AI…https://nakedsecurity.sophos.com/2016/12/30/hedge-fund-turns-to-ai-to-navigate-through-the-maze/). The algorithms they use for trading stocks have been in place for quite some time now. The story struck me not because of this. What I found compelling was their intent on applying AI to their business operations. Bridgewater Associates has what they call a “Principles Operating System” or PriOS for…

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Computer Control – Physical Input and Output

Computer Control – Physical Input and Output

I’ve briefly posted about my home heating control system.  The reason I’m revisitnig it is I’d like to gather all the pieces together and show how they work.  My heating system uses a hot water pump that circulates through pex tubing underneath the flooring, commonly known as radient floor heating.  Controlling when the pump turns on or off is the focus of this discussion. The rating of the pump, a Taco 006-B4 Bronze Circulator Pump 3/4-Inch Sweat, is 115VAC at…

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Security and Reliability

Security and Reliability

In the later part of 2016, there was an event that captured the attention of the public. The internet of things had it’s major debut as a tool by those with bad intent. It had been seen as a serious problem by security professionals long before. Now the threat was real. Automation should still require attention. The IoT world is not something that should be left to default, unabated to run as is. Unlike traditional user interface devices that would…

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