| Name | Modified | Size | Downloads / Week |
|---|---|---|---|
| readme.txt | 2015-01-17 | 1.2 kB | |
| maccody_robotics_croms-1.pdf | 2015-01-12 | 1.2 MB | |
| Totals: 2 Items | 1.2 MB | 1 |
Sometimes you do not want a fancy color, mega-pixel camera that delivers hundreds of frames per second no matter how cheap it is. If you need to look at something which does not change fast, does not have a lot of detail, and need to process the image with a PIC chip (or similar), then a 18x18 monochrome "camera" such as that provided by an optical mouse is ideal. The camera I am developing here is used to read a pointer dial on a Parkinson Cowan U6 gas meter. The (white) dial is approx 20mm dia with a red pointer. The pointer completes one revolution in approximately 1 minute 45 seconds. This camera is based around the Agilent ADNS-2610 chip. Normally, these chips simply output a stream of dx,dy information. However, the ADNS-2610 has a "debug mode" where it is possible to look at each individual pixel of the 18x18 array. Most of the work here is a repeat of that done by Mac A Cody in 2006. A PDF copy of his work can be found in the file list. The only difference is with the lens(es) chosen from the BG Micros LEN1015 lens package, which to my amazement is still available in 2015 - 9 years after the original article; and these provide a field of view approx 18mm square.
