In his blog, Charalampos describes his experience with SeeedStudio’s Grove Ear-clip Heart Rate sensor and Cosm (former Pachube) cloud service. The employed sensor is quite cheap and can detect heart pulses from the ear lobe, by measuring the infra-red light reflected by the tissue and by checking for intensity variations. By connecting this sensor with an ADK board […]
Youtube user [npaltmp] hacked up a alphanumeric LCD from a defective answering machine, an ear clip pulse sensor from a stationary exercise bike and interfaced it with an Arduino “using a simple circuit which normalizes the photo-transistor’s output voltage and amplifies fluctuations”. The Arduino senses rises and falls in voltage on […]
Youtube user [npaltmp] hacked up a alphanumeric LCD from a defective answering machine, an ear clip pulse sensor from a stationary exercise bike and interfaced it with an Arduino “using a simple circuit which normalizes the photo-transistor’s output voltage and amplifies fluctuations”. The Arduino senses rises and falls in voltage on […]
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