Re: [Openeeg-list] Building Amp Only

[Joerg H. <jo...@sd...>]

Hi,

Jon Acker wrote:
> Hi, I've just recently discovered the OpenEEG project and was thinking of
> building only the amplifier board, as I want to use my own PIC for
> digitising the signals. 
> 
> 1. Does anyone know if this is straigtforward, i.e. can I simply build only
> the amp and easily get the 0..5v signals out of it?

The signal range is 0..4 V.

Your digital board has to provide in order to operate the analog EEG board :

1) Filtered analog +5V supply
2) +2.0V reference voltage
3) 14Hz TTL signal for calibration
4) optical isolation of the data path
5) isolation of the power supply


> 2. Any idea if this will substantially reduce costs (and ease of getting
> parts) of building?

I guess: No.

But if you have some innovative ideas, how to provide all the features above 
with a cheaper and more easy design, you are welcome to discuss your ideas here.

Regards,

	Joerg