No, i just connect the electrodes to the right and left wrist only.. It is because i didnt understand the connection and i see some web site also didnt connect it. But can u explain the part i point(1 and 2). I dunno how to connect this two part..
i just can get a waveform that look almost like sin waveform only.. The voltage of the heart pulse very small only.. Just few milivolt.. So i amplify it with so larger gain. The heart pulse signal i get not i expect after i amplify, filtering with some filter. After i filtering i still get it a lot of noise.. Thanks for ur helping..