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In Plane Magnetic Field of a Current Loop
Well, this one is a failure (for now). In the comments on my post about the "Off Axis Magnetic Field of a Circular Current Loop" I was asked why I'd chosen to solve the problem the way I did and why I...
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Christmas Lights and Their Control Signals
Merry Christmas. I recently bought a set of LED Christmas lights for a display at work. They were nothing special, just a cheap set of 4 colour lights that can flash and dim the lights in different...
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Air Freshener "DRM"
A family friend recently bought a refill for their automatic air freshener and after one spray a warning light came on to indicate that it wasn't an authentic refill. After that it wouldn't work any...
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Find All Triangles In A Diagram And Add Together The Numbers They Contain
If you're a night owl like me you may have come across those late night game shows where you call in to win money. I'm not a fan of them. The rules are very vague, and they're broadcast on channel 74...
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Merging Regions Defined by a List of Vertices
In my last post I described a strategy for solving something I call the Triangle Game. I supplied code and gave a quick description of its operation. In this post I'll go into some of the finer...
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Restrictive Capacitive Touch Screen Guide
Recently at work we received MC40 mobile computers to perform inventory tasks. Just one problem. The interface was designed by Lucifer himself. The image below shows the problem. The on screen...
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Turning a Dash Cam into a Surveillance Camera
I've had to come up with a solution to a strange problem. A relative thinks that someone is stealing their pot plants at night. To see what's really going on a surveillance camera would be great....
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A 3D printed Successful Failure
Sometimes things don't work out the way you plan, but learning from failures can be valuable. I'm referring to the restrictive capacitive touch screen guide I designed a couple posts ago. It didn't...
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Visualizing Periodic Order Schedules
I've been grappling with a problem involving order schedules and thought a visualization may help to understand the problem better. There just doesn't seem to be an existing graph that satisfies all...
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Soylent OCR - Computer Assisted Human Based Data Entry
Can software help a human process images faster than a computer when you take into account the time setting up the image processing pipeline? That's the intent of "SoylentOCR - It's made out of...
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Improved Computer Assisted Human Based Data Entry
OK, I'm revisiting my post from last week. I was certain that I could reduce the time it took to enter data with some simple modifications. The results are at the end. The main change was the removal...
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Merge Sort... Sort Of
I have a project in mind that requires a sorting algorithm. That's easy enough, there are plenty of them out there, the problem I have is that I want to be able to save the state of the sort part way...
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Smart TkInter Image Manager for Labels
Just a quick post today. I've been working on a piece of python software that's tkinter based that requires images to be displayed. My preferred way of doing this is to use a tkinter.ttk.Label to...
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A Python Sorting Manager With A Human Comparison Operator
Nothing too exciting in today's post. I've created a SortingManager class to implement the sorting algorithm that I mentioned in a previous article. Unlike most sorting algorithms it doesn't have a...
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Visually Appealing Image Layout Algorithm
Let me pose a problem. If I were to give you a number of randomly sized images that needed to be displayed in order, in a row with a set width, how would you do it? To make things slightly more...
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Unique 2D Barcodes with Orientation Detection
A friend of mine is studying to be a teacher and was recently explaining how she uses a service called Plickers to administer multiple choice tests in classes. Every child gets their own square matrix...
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Bit Reversal Permutation Access
It'll take me a while to get to my point, but stick with me. Recently while I was waiting for a train, a freight train passed the station and I came up with an interesting thought experiment. I...
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Putting The Back On A Watch
Ever taken the back off a watch and you didn't know how to get it back on? Ideally you'll want to find a watch press that has the correct size dies. Watch PressBut, in a pinch, you can use a normal...
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Sorting Subjective Items With Software
Have you ever needed to sort a large number of items that don't have an easily defined order? Maybe it's what TV to buy or where you're going for a holiday. Some things only have a specific order to...
View ArticleFind & Copy Files While Adding The MD5 Hash To The Filename
Today I thought I'd show you a small script I'm using to decommission an old computer. To make sure important files weren't deleted I wrote a BASH script that finds all files on a drive with a certain...
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