Jake delivered the ECG prototype 1 supported by alternative power sources (9V battery and USB). Leveraging the Measure code with a few tweaks we've fixed sampling at 4 kHz and down-sampled effectively to 500 Hz. With a buffer depth of 1100 samples only ~2 seconds worth of a beat signature is saved thus giving us an unstable beat rate. If we extend the signature to 10 seconds worth we should be able to get more stability, so we'll need to decouple the drawWaveform buffer from the buffer used for beat detection.
Nevertheless, we've delivered the first ECG prototype for the XO which will hopefully serve to gain more interest for the XO's health-related applications.
Our Demo Video
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