Kind of works!
Had to do a lot of scaling within Max to get this to work with any degree of stability. Now with a little calibration and what a 'settling in period' (where the sensor sits on the finger for a minute to stabilise and detect) it works quite well.
The video above displays a very simple visual that represents the wearers heart-rate. The sensor seems to provide minimal lag.
To further improve its performance in terms of delivery of data i tried adding gain to the signal through an op amp but i experienced strange results. It may be that i need to use better quality components. However, as mentioned in previous posts i am keep to keep signal processing stages to a minimum as i am not using medical grade equipment and there is a good chance i will introduce even more noise to the system. For now it is stable enough to work with until another solution arises.
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