CloudACM – Page 20 – Autonomous Computational Machines

Data-sheets, the devil in the details

June 17, 2021 Patrick Gilfeather

Finding a suitable and reliable power supply for a project seems trivial to most. The battery selection is typically one of the common types available at stores. However, if you have a project that needs to run on battery, that choice will influence its overall use. The first question to ask is, what are the components of the project. These can range from discrete components to boards or modules requiring varying supply voltages. As the number of components increase, so…

Battery Health

May 27, 2021 Patrick Gilfeather

This post will be covering how to determine battery health using a number of methods. It will progress through each of these methods, highlighting some benefits and drawbacks. One of the easiest ways to test a battery is whether it will power a device or not. Using a voltmeter will provide how much potential is left in a battery. Although these methods are simple, they fail to provide how much life is left in the battery. This can be problem…

Color Isolation with FFMpeg

April 6, 2021 Patrick Gilfeather

I had written a post awhile back about color isolation using imagemagick. Here is a recap, but this time using FFMpeg. This turned out to be a good color pattern to do testing against. the reason I prefer this is because it contains white and black space to visually understand the results of the filter. Lets try this command. ffplay -i “color-pattern.jpg” -vf “colorhold=0xFF0000:similarity=0.25” Now our image shows only the defined color threshold, in this example it’s red. Here are…