Adding headers
I decided that it is time to connect the sensor to CY8CPROTO-062-4343W board.
I've soldered headers to the board, so I can connect and disconnect my heart beat sensor easly.
I've used the same pins as where used by thermistor - P10_1, P10_2, P10_0 and P10_3. I was not able to identify other pins that allows connection of analog signal to ADC
Wearable design
It will be much nicer to embed my heart beat sensor in a ring., but as I don't have 3D printer I've used other materials to attach it to my finger.
It was not too tight to allow free blood flow.. But it is tight enough to not loose it.
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Noise on ADC channel
Than I've plugged the cable into soldered headers. And I've started getting readings on ADC channel in the range 14640 to 26960. It is much higher than I've expected.
The same code on the same ADC channel was outputting data in much narrow range of readings between 18544 and 19584.
I need to resolve this issue with the noise before I can publish my data to AWS IoT.
I'll try to remove R37 to disconnect P10[2] from thermistor as the first step.