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Biosignals

Special Topic Resources

Check out these biosignal sensors and the science and engineering involved!

Pulse Oximetry - Using a PPG (Photoplethysmogram) Sensor

Note: PPG involves light reflecting off your skin for measurements. Accuracy tends to drop significantly with darker skin due to a lack of sufficient testing on darker skin for most PPG/oximeter models.

YouTube Channel: The Dev Doctor

YouTube Channel: The Alfred Intensive Care Academic Centre

YouTube Channel: Medinaz

Recommended sensor module (from SparkFun):

SparkFun Pulse Oximeter and Heart Rate Sensor - MAX30101 & MAX32664 (Qwiic)The SparkFun Pulse Oximeter and Heart Rate Sensor is an incredibly small, I2C based, Qwiic-enabled biometric sensor.

Motion Data (applications including walking step count, exercise movement, vibration measurement) - Using an Accelerometer

YouTube Channel: CircuitBread

Also, review SparkFun's guide on Accelerometer Basics.

Accelerometers are ubiquitous and readily available on Amazon and in most electronics kits.

Muscle Activation Data - EMG (Electromyography) Sensor

YouTube Channel: Corporis

YouTube Channel: The ScienceVerse

Heart Activity - ECG (Electrocardiogram) or EKG (Elektrokardiogramm - German) sensor

YouTube Channel: About Medicine

YouTube Channel: Osmosis from Elsevier

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