a couple of months back I bought myself Emotiv Epoc EEG headset. As I thought to save some money I didn’t purchase researcher license. Without the researcher license I wasn’t able to use Epoc’s API to get access to the raw data each electrode conveys. Without this access, I was able to play a little with free apps provided in Emotiv Store, but very quickly got bored.

Luckily later on I found out someone had hacked Epoc’s drivers and decrypted the data encryption, which meant it was now possible to see the raw sensor data. One of those hack implementations was done in java and because it had a very simple user interface and no option to save EEG data, I decided to create proper GUI for my research purposes on top of that.

https://github.com/joni-mikkola/emokit-java

Don’t do: I installed vsftpd and configured vsftpd.conf properly. I also opened up couple of ports in my Amazon EC2 Ubuntu instance. After half an hour later I was still trying to get WordPress to connect to my FTP server in order to get updated. Then I kind of realised that it probably isn’t necessary to setup FTP server in the same server that holds all my WordPress data.

Do: I opened up wp-config.php and added a line:
define(‘FS_METHOD’, ‘direct’);
which completely seems to override the FTP credential page and straightforwardly starts updating. Still one more problem occurred in unpacking the updates: Could not create directory
This error was resolved by changing the ownership of the directory where WordPress is installed. Before changing ownership make sure your username belongs to www-data usergroup. Then run:
sudo chown www-data:www-data /var/www/wordpress/ -R

Hopefully it works for you too!