Single lead ECG measurement with Olimex EKG Shield

[danvol23]

Hello,

I would like to ask you about single lead ECG acquisition from Olimex EKG Shield. I would like to acquire data just between RA and LA without the reference. Instead of the reference electrode, I would like to connect it to the virtual ground made of a voltage divider between supplying voltage and ground. Is it the correct procedure? I just want to make me sure. If there is any other way to do it, please do not hesitate to tell me.

Thank you very much,
Daniel

[LubOlimex]

You always measure the potential difference between the right electrode and the left electrode - this is the essence of the design. The voltage reference is used to lower the noise, it is not a data signal, just a noise compensation.