HealthyPi v3 - Health HAT for Raspberry Pi

An open-source, multi-parameter, full fledged human body vital sign monitoring HAT for Raspberry Pi as well as standalone use.

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HealthyPi is a do-it-yourself, open-source vital sign monitor based on the Raspberry Pi. THe HealthyPi board itself is a HAT add-on for the Raspberry Pi 3 which measures all the human body’s vital signs and sends it over to the Raspberry Pi. Couple it together with the official Raspberry Pi touchscreen and you’ve got a full-fledged vital sign monitor.

HealthyPi measures these vital signals from your body:

  • ECG (electro-cardiograph): Tracks the heart’s electrical activity corresponding to the way the heart works.

  • Respiration: This signal represents the breathing pattern of a person. It is measured using a technique called “impedance pneumography”, which essentially measures the conductivity of the thoracic cavity as the breathe-in/breathe-out process takes place.

  • Photoplethysmogram (PPG): An optical signal that translates to the volume of oxygen in the blood. By shining light on the skin, the pulse oximeter measures the amount of light that is absorbed by the body, by measuring the light that actually passes through the body. The PPG tracks the cardiac cycle also as the blood moves through the vessels.

  • SpO2: Uses PPG (described above) to monitor the amount of oxygen in the blood by calculating a percentage of the level of oxygenated Haemoglobin to the level of de-oxygenated Haemoglobin.

  • Temperature: Measure the skin temperature of the person being monitored with an accuracy of +/- 0.1 C.

Here is a screen-shot of the Raspberry Pi running the HealthyPi GUI:

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