File:RFID Open - Flickr - AMagill.jpg
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![File:RFID Open - Flickr - AMagill.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/8/81/RFID_Open_-_Flickr_-_AMagill.jpg/689px-RFID_Open_-_Flickr_-_AMagill.jpg?20200630081202)
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[edit]DescriptionRFID Open - Flickr - AMagill.jpg | This is a project that never quite got finished. The goal was to make a dog door for my dogs that would unlock only for them and not other dogs, skunks, coyotes, etc. So I built an RFID reader that could detect a tiny tag on the dogs' collars as they approach and unlock the door for them. Problem is, I could never get enough range out of it to be practical. I got about eight inches and I want 2-3 feet. The RFID chip is very sensitive to the resistance and impedance of the antenna (wrong values can even damage it), so changing the antenna myself without knowing a lot more about RF engineering than I do is impractical. |
Date | Taken on 17 August 2005, 03:57 |
Source | RFID Open |
Author | Andrew Magill from Boulder, USA |
Flickr tags InfoField | rfid , electronic , homemade , black , box , circuit , antenna , pcb , basic stamp , microchip , wire |
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by AMagill at https://flickr.com/photos/85473033@N00/34762695. It was reviewed on 30 June 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
30 June 2020
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 08:12, 30 June 2020 | ![]() | 2,076 × 1,806 (318 KB) | Red panda bot (talk | contribs) | In Flickr Explore: 2005-08-17 |
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Camera manufacturer | Canon |
---|---|
Camera model | Canon PowerShot S70 |
Exposure time | 2/1 sec (2) |
F-number | f/8 |
Date and time of data generation | 03:57, 17 August 2005 |
Lens focal length | 5.8125 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 02:19, 17 August 2005 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 03:57, 17 August 2005 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | −1 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 10,816.901408451 |
Focal plane Y resolution | 10,816.901408451 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Supported Flashpix version | 1 |
Image width | 2,076 px |
Image height | 1,806 px |
Date metadata was last modified | 20:19, 16 August 2005 |