EEG digital board questions

Dear All,

I have recently started an EEG project and bought two ready to use boards (including analog and digital) from Olimex. I followed the instruction on the OpenEEG website to check two boards, but found that the voltage between L102 and GND is less than 1 V which is supposed to be between 5V and 5.5V. However, the voltage between L103 and GND is around 5V which is correct. As this is the first test, I have no idea where is the problem. I have checked for short/open circuits but cannot find any problems. I am powering the boards using a 9V battery.

The second question is that as the boards from Olimex are fully assembled, I am wondering whether the microcontroller has been preprogramed so I can just use as it. I have sent an email to Olimex but am still awaiting the reply.

As my project is to sense emotion using EEG signals, I am using OpenVibe to acquire the signals but haven't looked into any detail. My question is that am I using the correct piece of software? Is there any alternatives that can be used.

Any suggestions and comments are appreciated.

Many thanks,

Yang

Dr Yang Wei
University of Southampton,
Southampton, U.K.

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