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→How To Build It?
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===How To Build It?=== | ===How To Build It?=== | ||
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HEARTRATE SENSOR, SIMPLE CIRCUIT | |||
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File:IMG_0804.JPG|circuit_1 | File:IMG_0804.JPG|circuit_1 | ||
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File:processing_heartrate.jpg|processing_screen | File:processing_heartrate.jpg|processing_screen | ||
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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. | |||
So I decided to try it again with an amplifier to get a stronger signal of my heartbeat. | |||
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To amplify the signal I used a low voltage op-amp LM358N. | 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. | The images of the third gallery show the circuit, schematic and processing screen result. | ||
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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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HEARTRATE SENSOR WITH AMPLIFIER | |||
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File:IMG_0821.JPG|circuit with amplifier | File:IMG_0821.JPG|circuit with amplifier | ||
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</gallery> | </gallery> | ||
[[Codes for Arduino and Processing]] | [[Codes for Arduino and Processing]] | ||
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====Related Links==== | |||
*http://www.youtube.com/watch?v=BAp1snPchT4&NR=1 | |||
*http://www.youtube.com/watch?v=yADsi5W-Lls | |||
*http://www.andere-baustelle.net/?page_id=101 | |||
*http://suchamagicworld.blogspot.com/2008/04/still-alive-heartbeat-irsensor-report.html | |||
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THE EKG SENSOR | |||
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File:ekg_sensor_processing_screen.jpg|heartbeat on processing window | File:ekg_sensor_processing_screen.jpg|heartbeat on processing window | ||
</gallery> | </gallery> | ||
[[Codes for Arduino and Processing]] | [[Codes for Arduino and Processing - EKG Sensor]] | ||
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