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Month: February 2015

Augmented reality

Augmented reality

Introduction – seeing what is relative This will be more of an introduction on the topic of augmented reality.  It will be platform independent, but it may make reference to various types of devices.  Basically it is creating a visual experience that is a combination the natural world and digital. The concept of enhancing a visual object, in real time, with detail is the idea behind augmented reality.  Its easier to explain with application that to describe it outright.  Grocery…

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Remote and Local RPi Sensors in Cacti

Remote and Local RPi Sensors in Cacti

Introduction – how’s it going This post will cover the logging of data in Cacti using non SNMP/WMI sources.  We’ll gather local RPi information and plot it in Cacti.  Then we will go through the procedures to gather data from the internet and process it into Cacti.  This is an expansion of the NOAA XML file processing done in an earlier post. Purpose – having a reference can give you an idea of were you’re going Cacti is a multi…

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SNMP Heater

SNMP Heater

Introduction – a practical need I want to automate the task of changing when my house heater turns on or off.  You’re probably thinking, use a thermostat.  That works with conventional forced air heating.  We use radiant floor heating that is from the hot water supply for the home.  There is a wider hysteresis.  It’s more likely the warmth effects will last longer after the conventional thermostat triggers off.  This is also the case when it needs to heat the…

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RPi Backup and Restore

RPi Backup and Restore

Introduction – rapid deploy many or custom build one In this topic I’ll cover the steps to backup and restore a RPi.  There are numerous write ups about the subject, so I feel a bit plagiaristic about doing this.  However, giving someone to ability to save time and effort is worth it.  I will give credit to Whitson Gordon who posted steps that I found online.  I’ll try not to be too verbatim, adding some of my reasoning and experiences….

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