Hello, I've noticed a clear voltage difference between the first 8 electrodes and the additional 8 with the daisy module. What could explain this difference?
Is this just happening recently, or has it been present since your original use of the Cyton?
What 10-20 sites are the electrodes located at? That will make a huge difference.
If you wanted to actually test this more accurately, you could make a Y-cable, that combines two female connectors with one male. Plug the females into say channels 1 and 8, and the male in the the single 10-20 site electrode you are testing.
(Cut two of those jumpers in half. Discard one of the males. Strip the remaining three wires so about 1 cm wire is bare. Twist together, seal with tape.)
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