Software Examples
Updated March 2023
Welcome to my Software Examples page!
The code and designs are copyright of Redford-Tech Limited. They are freely licenced for non-commercial use.
Redford-Tech Limited and the author, Simon Redford, have provided these examples to show how various applications may be programmed - there may be better or simpler ways of coding some of these examples and they may or may not behave the way I intended them to in some different environments.
The original set of examples relate to animation of a Scroll Expander from work around the development of Organic Rankine Cycle micro-CHP products. Originally programmed in VB.NET (Microsoft Studio) to help explain how scroll expanders (and compressors) work, I re-wrote the animation for Java/Netbeans environment and also revived an MS Excel demo - all available below - FREE!
The intention in providing these examples is to help you get going quickly in GUI environments. I found that after getting through the basics of time control and creating smooth animations, it's easier to then expand your knowledge from the plethora of advice available from searches and on-line videos. Each of the four Java/Netbeans examples leading to the scroll simulation are described in Youtube videos.
Please note that if you want to run the runtime only (.jar) files, you may need to install a Java Runtime Environment if one is not already installed on your computer. The Java Runtime Environment can be downloaded from here
I hope they work for you!
Java SE 1.8 + Netbeans IDE 8.2 developed on 64-bit laptop running Windows 10
Stop Watch Example (StopWatch):
Animation Example (AnnieMate):
Analogue Clock Example (Clock):
Nixie Tube Clock (NixieApp):
Scroll Expander Example (ScrollSimulation):
Scroll Visualisation (ScrollOrbit)
This App animates actual scroll images
Notes (pdf files):
Animation Example (AnnieMate):
Analogue Clock Example (Clock):
Nixie Tube Clock (NixieApp):
Scroll Expander Example (ScrollSimulation):
Scroll Visualisation (ScrollOrbit)
This App animates actual scroll images
Notes (pdf files):
Project Zip file
Project Zip file
Project Zip file
Project Zip file
Project Zip file
Simple Timer Loop note
Graphic Screen note
Basic Trigonometry note
Project Zip file
Project Zip file
Project Zip file
Project Zip file
Simple Timer Loop note
Graphic Screen note
Basic Trigonometry note
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
Runtime (.jar file)
See below
See below
See above
See above
Please note that screen resolution may need adjusting to see these examples as
they were intended, particularly if your screen scale is not 100%
Scroll Simulation in Excel
An animated Excel file showing the construction and operation of Scroll compressors and expanders
can be downloaded below. Two versions are available, the original for operation in older, 32-bit versions
of Excel and the newer version for newer, 64-bit versions of Excel . To see the scroll chart orbiting you
may need to alter Excel security settings to allow macros to run. The equations that describe the scroll
involutes (or wraps) can be seen and the relative position of the dynamic involute to the static involute
is changes one step at a time to animate the orbit motion. Pockets of gas travelling through the meshed
involutes are illustrated by coloured outlines. Depending on your computer performance, the size of step
will vary the simulation speed.Scroll Simulation for older versions of Excel Scroll Simulation for newer versions of Excel
Arduino Sketches for Logging Mains Electricity Consumption
A set of Arduino Sketches for long-term half-hourly monitoring and recording of mains
electricity profiles saved to SD cards. Three different methods are presented:
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Measuring current with a CT and voltage with a VT for true power
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Monitoring Utility meter LED pulse outputs
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Monitoring Utility meter Volt-Free pulse contacts
