File:Secure Analog Sensor On A Breadboard.jpg

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This is breadboard test of a secure analog sensor. As you may have noticed there is no pull-up resistor in this circuit, that is because I am using the built-in pull-up resistor of the atmega328. The sensor used is a simple reed switch, so that when the other half of the sensor (containing a magnet) is near, the circuit is closed. As you can see in the closeup picture, the two 4.7kOhm resistors are simply screwed onto the sensor, providing us with tamper/cut detection.

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current15:03, 26 June 2011Thumbnail for version as of 15:03, 26 June 20112,592 × 1,936 (2.39 MB)Aceat64 (talk | contribs)
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturerApple
Camera modeliPhone 4
Exposure time1/15 sec (0.066666666666667)
F Numberf/2.8
ISO speed rating320
Date and time of data generation15:49, 26 June 2011
Lens focal length3.85 mm
OrientationNormal
Horizontal resolution72 dpi
Vertical resolution72 dpi
Software used4.3.2
File change date and time15:49, 26 June 2011
Y and C positioningCentered
Exposure ProgramNormal program
Exif version2.21
Date and time of digitizing15:49, 26 June 2011
APEX shutter speed3.9112
APEX aperture2.970853573907
Metering modePattern
FlashFlash did not fire
Color spacesRGB
Sensing methodOne-chip color area sensor
Custom image processing3
Exposure modeAuto exposure
White balanceAuto white balance
Scene capture typeStandard
North or south latitudeNorth latitude
East or west longitudeWest longitude
Reference for direction of imageTrue direction
Direction of image224.53956834532
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