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*http://suchamagicworld.blogspot.com/2008/04/still-alive-heartbeat-irsensor-report.html | *http://suchamagicworld.blogspot.com/2008/04/still-alive-heartbeat-irsensor-report.html | ||
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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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<gallery> | <gallery> | ||
File:IMG_0821.JPG|circuit with amplifier|500px | File:IMG_0821.JPG|circuit with amplifier|500px | ||
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</gallery> | </gallery> | ||
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The | The selfmade sensor with the IR Emitter and Detector is very sensitive for any motion and movements of the finger being measured. So I tried out a EKG Sensor which displayed a higher resolution of the heartbeat on processing. There are 3 electrodes patches placed on the skin: One on the right wrist for the reference, one on right elbow for the negative alligator clip and one on the left elbow for the positive clip. | ||
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<gallery> | |||
File:IMG_0828.JPG|EKG Sensor|500px | |||
File:IMG_0830.JPG|EKG Sensor with Arduino board|500px | |||
File:IMG_0831.JPG|electrode patches with alligator clips|500px | |||
File:IMG_0835.JPG|three electrode patches placed on arms|500px | |||
File:IMG_0837.JPG|positive electrode on left elbow|500px | |||
File:IMG_0838.JPG|negative reference electrode on right arm|500px | |||
File:ekg_sensor.jpg|heartbeat on processing window | |||
File:ekg_sensor_calm.jpg|heartbeat calm | |||
File:ekg_sensor_increased.jpg|heartbeat increased | |||
File:ekg_sensor_processing_screen.jpg|heartbeat on processing window | |||
</gallery> | |||
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