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I discovered that my code was using the screen zoom in one of the DXF export calculations, and that the math used to guess at a good connector radius was not quite right. After fixing those two issues, I also made a change to improve the solid link…
Continue readingThe Linkage program is showing a really weird bug. Bug In the picture, it is obvious that the dotted line that is the arc between two connectors A & C, is not passing through the sliding connector D. This gets worse with time until the triangle shaped link…
Continue readingI lost some old emails from people who wanted to use the Linkage program on Windows XP. This post is my only way of letting anyone know that I recently built the program for XP. I have not yet tested it. I don’t have a Windows XP system…
Continue readinghttp://kugelbahn.blog.de/2014/01/29/erlesener-liftmechanismus-kugeln-david-rector-17653059/ I am proud to have been mentioned on the kugelbahn blog. It’s one of only two or three blogs that I read. The blogger is prolific and I can count on seeing something new almost every day. Now I need to get off my butt and work…
Continue readingWhile designing the lift mechanism for the new rolling ball sculpture, I found myself using a paint program and a lot of manual work to get printed plans with a 1:1 scale factor. In other words, I wanted printouts that were the actual size of the mechanism. This…
Continue readingI finished the minimal work necessary to use the new installation package. I don’t have time to do more extensive work on it but I think that it is good enough to send out. The user cannot pick a destination for the install and the program is installed…
Continue readingI will be using Visual Studio 2012 soon. I need it for Windows Phone 8 development and it is getting to be a bit annoying having multiple versions of Visual Studio installed. I already have VS 2008 for some of my day job projects and VS 2010 installed…
Continue readingThe bug mentioned in an earlier post today was an easy fix. During the simulation, I do error checking to make sure that a set of links that are being moved into their new locations are not already stuck in their current location. Sort of. Invalid Connections Shown…
Continue readingNote: The bug mentioned below has been fixed and is described in This Post. I encountered a bug in the Linkage simulation code. I have error checking for mechanisms that won’t work and I was aware of some situations that were not working right. This new problem surprised…
Continue readingAbout ten years ago, I was building a robot and I found a demo of a 4-bar linkage design program that would synthesize a mechanism based on an input curve. It suited my needs but I wanted to do more. I ended up wanting to write software for…
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