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→How To Build It?
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File:processing_heartrate.jpg|processing_screen | File:processing_heartrate.jpg|processing_screen | ||
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[[Codes for Arduino and Processing]] | |||
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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. | 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. | ||
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File:IMG_0826.JPG|Arduino with Data Logger Shield | File:IMG_0826.JPG|Arduino with Data Logger Shield | ||
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[[Codes for Arduino and Processing]] | |||
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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. The EKG Sensor is connected with the Arduino to Ground, 5V and Analog Input A0. The heartbeat is displayed with Processing. | 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. The EKG Sensor is connected with the Arduino to Ground, 5V and Analog Input A0. The heartbeat is displayed with Processing. | ||
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File:ekg_sensor_processing_screen.jpg|heartbeat on processing window | File:ekg_sensor_processing_screen.jpg|heartbeat on processing window | ||
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[[Codes for Arduino and Processing]] | |||
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This was a pretty good thing to test but unfortunately it wasn't convenient for a design to wear it every day and take everywhere I go. In cause of that and diverse failed trys to make a sensor by my own, I decided to buy a device. | This was a pretty good thing to test but unfortunately it wasn't convenient for a design to wear it every day and take everywhere I go. In cause of that and diverse failed trys to make a sensor by my own, I decided to buy a device. | ||
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