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Category Archives: Technology
Private RoIP (Radio over IP) System
I often work in places that are spread out over large distances and are underground or filled with radio obstructions like thick concrete/steel walls and lots of metal equipment. Getting radios to work takes some infrastructure and money. Something I … Continue reading
Posted in How-To, Projects, Technology
Tagged amateur radio, Asterisk, ham radio, network, Radio, Raspberry Pi, RoIP, voip
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WeatherCam online
I hooked up an old analog camera I had laying around (one of the 15!) to an Axis 2400+ video server I bought off of ebay for $40. A little script that runs every minute and copies a picture from … Continue reading
Kodi, Sling, Plex, MythTV Entertainment Options
In a more-complicated-than-need-be step to canceling our satellite TV service, I installed MythTV backend and Plex server on an old computer that was sitting around. I started by installing mythbuntu because I’m already comfortable with using Ubuntu. MythTV uses the inexpensive … Continue reading
Posted in Projects, Technology
Tagged Amazon Fire Stick, cut the cord, Kodi, MythTV, Netflix, Plex, Sling TV, TV, Ubuntu
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Computer Time
Inside a computer, the definition of time gets confusing, because we haven’t always agreed on the definition of time and we periodically add bits of time (usually seconds) based on unpredictable events that occur with a giant water-covered rock flying through … Continue reading
Posted in Information, Technology
Tagged atomic time, GMT, GPS, leap second, TAI, time, UT1, UTC
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Review of the YHS-302A Process Calibrator Meter With Multimeter
For about 1/4 the cost of a Fluke, I decided to take a risk and buy a Chinese process meter. This company makes a clone of the 787, but I opted for the YHS-302A model (which now seems to be … Continue reading
Posted in Industrial Automation, Technology
Tagged loop calibrator, multimeter, process meter, tool
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Convert PDF to PNG using Linux
If you use the defaults for Imagemagick, the output of a PDF file with text converted to PNG is unreadable. The secret is to use the density option: $ convert -density 300 xxxxx.pdf yyyyy.png If the original PDF has a … Continue reading
The Key to Understanding the World
“It’s very existence is too improbable for any one person to truly comprehend” I, Pencil: The Movie The world we live in: we should be dumbstruck by its intricacy and brilliance Each part of the pencil is the result of the cooperation and collaboration of millions of people … Continue reading
Posted in Interesting, Technology
Tagged free market, human, pencil, trade, voluntary
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Battery 6x Larger Than Motherboard
I disassembled a broken tablet purchased on ebay. The plan was to fix the screen, but just can’t get over the fact that the battery in this device is six times larger than the motherboard! By the way, the motherboard … Continue reading
Chrome OS is Awesome
I was a fan of the netbooks because they were inexpensive, small, booted quickly (well, before Microsoft got involved that is), and had great battery life. The low-end line of chromebooks maintain these features, with the added benefit of being powered … Continue reading
