Category Archives: Technology

ESP32 / Arduino IDE

Posted on May 27, 2024 by Brian Gallimore

While trying to help my son with schoolwork, I searched for simple and cheap micro controller tutorial and found the ESP32 series of products. For $15, I bought a starter kit that included the micro controller on a development board, … Continue reading →

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Barcode Format Converter

Posted on May 6, 2023 by Brian Gallimore

I’ve been working with systems that use 10-digit barcodes. Different systems require that the data be stored in different ways, and I usually can’t decode the values in my head, so I wound up creating a spreadsheet to do the … Continue reading →

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Private RoIP (Radio over IP) System

Posted on December 2, 2021 by Brian Gallimore

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 →

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WeatherCam online

Posted on January 28, 2018 by Brian Gallimore

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 →

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Kodi, Sling, Plex, MythTV Entertainment Options

Posted on December 28, 2017 by Brian Gallimore

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 →

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Computer Time

Posted on June 15, 2015 by Brian Gallimore

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 →

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Review of the YHS-302A Process Calibrator Meter With Multimeter

Posted on December 4, 2014 by Brian Gallimore

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 →

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Convert PDF to PNG using Linux

Posted on July 19, 2014 by Brian Gallimore

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 →

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The Key to Understanding the World

Posted on September 11, 2013 by Brian Gallimore

“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 →

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Battery 6x Larger Than Motherboard

Posted on August 26, 2013 by Brian Gallimore

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 →

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