Hi,
I'm lacking some basic knowledge about electronics to finish a project and need help from you guys. I am working on project based on this: https://www.hackster.io/protocentral/single-lead-ecg-heartrate-variability-using-max30003-d20057.
I connected arduino with Protocentral MAX3003 board but I need help with understanding how should i connect electrodes with board used in that project. I don't have these special clips with audio jack and electrodes. I want to use my headphones cable and coins as electrodes. I don't understand however how should I connect coins with my headphones wires so it would send signal properly. I plug in audio jack and on the other side I have four wires of headphones cable: left audio, right audio and 2 ground. Problem is that I don't know what should I do with those ground wires. Should I connect only audio wires with coins and leave ground wires? Or I need to connect ground wires too. Based on what I thought I need to connect both audio and ground wire to close a curcuit, but connecting both signal and ground wire to one coin would result in grounding that signal wire and no signal would be sent to board at all. So I don't know what I should do.
I would appreciate any help.
I'm lacking some basic knowledge about electronics to finish a project and need help from you guys. I am working on project based on this: https://www.hackster.io/protocentral/single-lead-ecg-heartrate-variability-using-max30003-d20057.
I connected arduino with Protocentral MAX3003 board but I need help with understanding how should i connect electrodes with board used in that project. I don't have these special clips with audio jack and electrodes. I want to use my headphones cable and coins as electrodes. I don't understand however how should I connect coins with my headphones wires so it would send signal properly. I plug in audio jack and on the other side I have four wires of headphones cable: left audio, right audio and 2 ground. Problem is that I don't know what should I do with those ground wires. Should I connect only audio wires with coins and leave ground wires? Or I need to connect ground wires too. Based on what I thought I need to connect both audio and ground wire to close a curcuit, but connecting both signal and ground wire to one coin would result in grounding that signal wire and no signal would be sent to board at all. So I don't know what I should do.
I would appreciate any help.