i'm able to collect ECG data of all channel (except channel1) from the code which i have written. Data is collected through SPI protocol. The channel 2 and 3 is giving a proper ECG data but Channel4 to 8 is not looking like ECG. please guide me on how can i get a proper ECG on all channel. please find the attachment of the channel3 ,4 and 5 data plotted on excel sheet.