To choose an iWorx TA-220, OpenBCI Ganglion or a AD8232, ADS1115 & Arduino to build a 3 channel gold standard ECG device with a Spirometer from it?

iWorx TA-220 OpenBCI Ganglion To build our own 3 Channel Gold Standard ECG Device with a Spirometer from AD8232, ADS1115 & Arduino This last setup is my preferred choice but needs to be digested. It has 16 bit A/D which makes it suitable for medical and research grade applications. It is the setup for people …