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Android Nexus 4 – Still can’t ’empty trash’…

Saturday, March 30th, 2013

I was annoyed enough by ‘pop email’ issues during my first pass at Android that I simply returned the device. As mentioned previously, Google hardware is Google-Centric and, most likely, will force you to use other Google products & services – if you want to use Google hardware in an independent manner then you have Continue reading →

More Awk with CSV/DSV files

Sunday, January 13th, 2013

CSV/DSV Basics CSV = Comma Separated Values DSV = Delimited Values, i.e. comma (,), pipe (|), tab ‘\t’, etc. Why Use Awk? The approaches used by most scripting languages are quite similar – understand one and picking up another is usually pretty easy; Awk, while perhaps ‘syntax-querky’, is relatively easy to work with. While there Continue reading →

RRDTool Graphs – refining Color Temperature Gradients

Monday, May 28th, 2012

So, what happens when you have a ‘hole’ in your RRD data source upon which you base a color gradient?   RRD Graph – gaps in data – attic-temps-Zone-Y   The first version of this graph used a gradient peak that was two points above the peak – but the holes were still there… The Continue reading →

Creating Color Gradients with RRDTOOL & Bash (using temperatures)

Thursday, May 3rd, 2012

You would think that it would be easy to locate just about any information on the Internet but that’s simply not true.  While I found many examples (using various approaches) of generating graphs with gradients using rrdtool I did not locate any dynamic solutions, i.e.: I have data in multiple RRDs, I need to extract Continue reading →

Reading DS18B20 Temperature sensors with DigiTemp

Wednesday, April 25th, 2012

Over the past several months I have collected quite a number of temperature readings from a custom sensor network.  I started with ~30 sensors and maxed out at ~42 sensors (due to limitations/quirks of 1-Wire protocol/networks.)  For background on this project visit the related posts. I am using Digitemp because it simply works – but Continue reading →

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