Design of a Scoring Machine (Multi-Judge Scoring of Photographic Competitions)
Summary: There is a requirement for recording and totalling the scores from multiple judges in many federation, national and international photographic competitions. To meet this requirement there have been several designs of hardware made by various organisations in the past. As these age, their maintenance has become either difficult or impossible, and there is a need for an available design which can be simply made. My design replaces all the bespoke hardware by readily available standard components, and transfers the functional complexity to software which can be run on any standard computer system.
The hardware design and all versions of the software are copyright. They are licenced for free use by the Photographic Alliance of Great Britain, its member federations, and its affiliated photographic societies.
Hardware: Download the Design Specification (pdf 60KB)
Operating Principle: The handset encoder sends a different standard ASCII character for each button pressed on each judge’s handset. The character may be decoded into judge and score by any suitable software.
Software: Software was originally developed in VBA for MS-Access. For wider applicability, this was recreated and further developed to use VBA in MS-Excel. (Current version ref: E305, April 2017)
- Download the Features Description (pdf 80KB).
- Download the Instruction Manual (pdf 215KB).
- The software is a macro-enabled Excel workbook. Read the manual in full, including the security information, before deciding whether to download the software.
- Download the Software (zip file, 90KB) to your default download folder. Extract the zip file to obtain the Excel97-03 xls file.
Gallery pictures of the Scoring Machine hardware.
How does this design differ from some other current designs?
A design for Western Counties Photographic Federation uses handsets where each has its own keyboard encoder with USB lead. By wiring each handset uniquely, three handsets can be connected through one USB hub. Each key gives a unique character (by score by judge) and the same software decoding method is used as for the handsets shown here.
Commercially available USB numeric keypads can be connected through one USB hub. The judges must limit themselves to the valid numeric scoring keys, depending on the competition format. Two methods have then been used to identify the judge for each score.
- The USB address of each keypad is identified by a specific software module, which must be installed and integrated with scoring software. This method has been used with the PhotoComp scoring system (Philip Stapleton), and with the ImageCompPro scoring system (from version 18) (Roy Moore).
- Five non-numeric keys ( / * – + . ) are available to be assigned each to one judge, and the judge prefixes the numeric score by their own identifier. This method has been used by the Ivybridge scoring system (Derek Rayner).