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Wireless device monitoring with wavemon

Wireless device monitoring with wavemon wavemon is a wireless device monitoring software that allows you to watch signal and noise levels, packet statistics, device configuration, and network parameters of your wireless network hardware. It was written by Jan Morgenstern and is regularly maintained. It allows you to display your WiFi signal strength in realtime. Installation and start You install wavemon with sudo apt install wavemon -y And start it with wavemon and a dashboard appears. If you can’t see the function keys at the bottom, you need to make your Terminal window larger. What the information means Let’s quickly run through the data points that you want to look at to understand better the WiFi quality that your digital picture frame enjoys. Signal strength Basically, the higher the signal strength, the more reliable the connection and higher speeds are possible. The signal strength is specified as -dBm (decibels related to one ...
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How to play YouTube video's without ads

  If you have a link to a YouTube video such as: https://www.youtube.com/watch?v=YaeDtNw32EA There a couple of tricks that you can use to play this video without advertising.  1) - Modify the above URL to add a "hyphen" between the T and U to make it as follows: https://www.yout-ube.com/watch?v=YaeDtNw32EA This will throw you to an alternate YouTube,com URL as follows: https://www.youtube-nocookie.com/embed/YaeDtNw32EA 2) - Edit the original UTL to the above URL as shown.  Specifically, do a search and replace on " https://www.youtube.com/watch?v=" and replace with " https://www.youtube-nocookie.com/embed/" Note: These work as of 01/07/2023.
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What I didn't learn in school about History. Interesting videos about the fall of intellectual advancement in early 1100 AD. Neil Degrasse Tyson on the collapse of intellectual advancement in Bagdad around 1100 AD.   https://youtu.be/GApFIt-fG6c The Golden age of Islam Explained.  https://youtu.be/tJJLvoDg2_E 1177 B.C When Civilization Collapsed https://youtu.be/M4LRHJlijVU
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"Blinky" TDOA RDF Detector

Our local Amateur Radio club is building a Radio Direction Finding TDOA (Time Difference of Arrival) detector that has LED's to indicate the direction (Left or right) of the fox.  Here are the build instructions.   (Note: this project was originally presented by NZ1J.  See his video:   https://www.youtube.com/watch?v=mNqUKYkifOo&t=68s   ) Here is the completed project: We start with the schematic:   Note that you either install PIN Diode pairs s D3 and D2, or Diodes pair D1 and D4.   The difference between these is the packaging.  If you are ok with Surface mount, then install D1/D4.  If you want discrete components use D3/D2. Next is the PCB.   The PCB can be ordered using the GRBR files available from the author.  The BOM for the electronic parts is as such: Doppler Direction Finder Bill of Materials   11/12/2021        Qty Part Digi-key Part Numbe...
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Radio Direction Finding - TDOA

This article describes a few projects that I built from plans for Amateur Radio Fox Hunting. Basically, the hobby/sport is for someone to hide a few low power "Foxes", which are small transmitters that beep or send Morse Code, and then have a bunch of HAM's try to find them. The first project that I built was a Yagi Antenna (Directional receiver) and a 4MHZ Offset Attenuator.  The attenuator is needed when you get close to the fox and you need to reduce the power of the received signal.  I struggled with this setup because, on my first 2 fox hunts, there was too much reflection and multi-path interference.  This causes false direction detection and if you are not mentally prepared for this, you want to throw all of your equipment into a garbage can and take up a different hobby.   There are some truly strange individuals who find this frustration fun and enjoy making other people suffer, but I will leave that discussion for another day.  Anyw...
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Repetier host "Exception during socket read:Too many items in the combo box" - Solved!

I purchased a new BoXZY (3D printer, laser and CNC Mill) and have been pretty pleased so far. See https://boxzy.com/ One little issue though is that I have been trying to configure it so that I can 3D print from my laptop without having to connect a USB cable to the printer. The layout in my office is not convenient for the cable to span across the room.  Also, when I start using it for CNC Milling, I do not want to necessarily have my laptop too close to the router making all the dust.  My first attempts to install Repetier Server on various platforms was less than successful. I found that I often would get the error message "Exception during socket read:Too many items in the combo box" when I connected the application to whatever server that I configured. What confused me is that it would work perfectly on one of several computers,. but I could not find a root cause. In addition, I received a Smart Controller (Beta) from BoXZY which came with Windows 10 H...
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Exchange DAG Failover Report - CollectOverMetrics.ps1

Below is my quick command that requires no customization to run on any installation: Get-DatabaseAvailabilityGroup |%{ .\CollectOverMetrics.ps1 -DatabaseAvailabilityGroup "$($_.name)" -StartTime ((get-date).AddDays(-365)) -EndTime ((get-date)) -MergeCSVFiles} Note that this script is located in the "Scripts" directory of your Exchange v15 installation. 
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