Noise and interferences on Cyton board
I have 2 boards and dongles. I'm using 2 electrodes for EMG + 1 for bias. Board 1 and dongle 1 get the expected EMG signal. Board 2 and dongle 2 (without moving the electrodes) give me a signal full of interferences. Any idea what is happening?
I tried disconnecting all the electrodes and the board is picking up the same signal (see picture). This only happens in board 2.

Edit: I'm using the cyton board, got in the Ganglion sub by mistake, I don't know how to change it.
Comments
Move the dongles farther apart and not right next to each other. This has worked for others.
This thread may also be relevant, depending on your radio channel settings. It's possible that adjacent channel number, such as #4 and #5 may provoke some inter-channel interference. So picking wider spaced channels (such as #4 and #10), may be less adjacent.
https://openbci.com/forum/index.php?p=/discussion/3099/stream-from-two-cytons-at-once-how-to-change-channels-resolved
William