Greentek Sleep EEG cap?:

which eventually has issues:

Does the the greentek sleep eeg cap run for more than 10 seconds without too much noise in the EEG signal?

OpenBCI with 16 channels?

And the Python sleep software?:

https://scholar.google.com/scholar?hl=de&as_sdt=0%2C5&q=Sleep%3A+An+Open-Source+Python+Software+for+Visualization%2C+Analysis%2C+and+Staging+of+Sleep+Data&btnG=

What is your opinion about this topic? Write it in the comments below. Peter Gamma from www.petergamma.org invites you to participate and test it.