comADC-EEG

From: Joerg Hansmann (info_at_jhansmann.de)
Date: 2001-08-08 02:12:17

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Hi,

here is a new low-cost design of an isolated 8+ bit
ADC that connects to the RS232 port.

It provides it's own 256 Hz sample clock timebase
and is not very Windows-friendly.

(Thanks to JBilderback <jiva_at_humboldt1.com> for
all the datasheets and constantly motivating me ;-) )

I have connected the comADC prototype with the amplifier
stage of the old gameport EEG and written a DJGPP / allegro
program to decode the interface data.

(See pictures with 50uVpp calibration signal and brainwaves
of a full-spectrum audio-feedback session)

Regards,

Joerg

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