How to start a sleep acquisition without the PC
Hello,
I am running a research project on the relationship between sleep and emotions. The protocol involves subjects recording their sleep at home using the OpenBCI CytonBoard. I want to avoid using a PC to start the recording and need a way to initiate it directly through the device. I am considering coding the board to enable the trigger to start the acquisition independently (by adding a button or a switch). Do you have any suggestions on how to achieve this or any better ideas?
Thank you!

Comments
Fabfes, hi.
Here is a recent thread and links which might be of interest:
https://openbci.com/forum/index.php?p=/discussion/3746/sleep-monitoring-with-eeg
https://github.com/roflecopter/OpenBCI_Cyton_Library_SD [custom firmware]
https://blog.kto.to/hypnodyne-zmax-vs-openbci-eeg-psg [excellent tutorial and review of Cyton vs ZMax, by Max Eastwood]
You can directly message Max Eastwood by clicking on his user name @max_eastwood, and using the Message button on that page. He may also share his direct email address with you.
Note that OpenBCI customer support staff strongly discourage altering the firmware because some users in the past have 'bricked' (destroyed) their boards doing firmware flashing. Any custom firmware mods are at your own risk and not covered by product warranties. On the Github link above, Max claims to be exploring an option to start sd card recording without the PC.
William