Thread: Sofia-EOG - open source software and hardware for REM detection

Originally Posted by petko10

Since then I've fitted it with power supply from usb (not batteries). It's not the safest thing to do but I consider the risk for myself negligible and I don't have to deal with batteries.

Hmm, I would seriously advise yourself and anybody testing your project to use batteries, no matter how inconvenient. Remember a fault in the PSU, without isolation is gambling with your life. Household mains current across the brain or your heart for example is capable of killing you.
This includes running the laptop on batteries too.

On a more lighter note - If you want to reduce noise further then I suggest replacing those copper electrodes in the picture with silver chloride ones and maintain optimum skin contact with a conductive gel maybe.

UK users would need a 50 hz filter in the software. I don't know if this could be configured in the software panel or if you have a script for this?

Good luck with the project and the testing BTW. I would help out but I'm really stuck for time, but it is something I will follow as I'm quite interested in these types of projects.