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Inspired by diverse links and Youtube videos the very first try to build it was to use IR Emitter and Detector. It didn't work that well: the sensors are pretty sensitive for moving action and the signal at processing was very faint. | |||
To amplify the signal I used a low voltage op-amp LM358N. | |||
The images of the third gallery show the circuit, schematic and processing screen result. | |||
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=====Related Links===== | =====Related Links===== | ||
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File:IMG_0826.JPG|Arduino with Data Logger Shield|500px | File:IMG_0826.JPG|Arduino with Data Logger Shield|500px | ||
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The Data Logger Shield for the Arduino board is directly plugged on the top of it and will save the collected data to a SD card. | |||
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