The ModularEEG

General information

The ModularEEG device is made up of two or more EEG amplifiers, and a 6-channel signal capture board that connects to a PC via a standard serial cable. The standard setup has two EEG channels.

As with any EEG device that you build yourself, there is a risk of injury involved. Make sure you read the WARNING file below.

The cost of a complete system is 200 to 400 USD. The exact figure depends a lot on where you buy parts from, and whether you buy or make your own electrodes. You do not have to be an electronics expert by any means, but you will need to know how to handle a soldering iron, and be able to read a schematic.

General information (has ModularEEG sections)

• General Frequently Asked Questions.
• There's also a wishlist of things people hope to see in the future
• A safety disclaimer - read the WARNING which applies to ModularEEG.

Design Documentation

• Project download at Sourceforge.
• Design documentation
• Amplifier schematic [55kb] (aka analogue board; contains two amplifiers) and digital board schematic [48kb] as images.

Build Documentation

• Assembly section (Section 1) of Building instructions (a collective document)
• The Preparation, Acquiring the Parts, and Building the Circuits sections of A guide to building the ModularEEG by Dan Griffiths (under construction)
• Some ModularEEG photos by Nelo and Joe Street .
• Hardware build tips assembled from the mailing list by Jim Peters.

Modification

Design Modifications

• For those who want to do more than 2 channels, there are some documents for Multi-channel ModularEEG.
• Design Modification tips gathered from the mailing list by Jim Peters.
• Bastian Holtermann's diploma thesis (German) about expanding the Modular-EEG device to 16 channels with schematic diagram, PCB layout and sources.

Parts Substitutions

• Parts Substitution tips gathered from the mailing list by Jim Peters.

Troubleshooting, Testing, and Calibration

• Testing section (Section 2) and "Common Problems" section (Section 3) of Building instructions (a collective document)
• Hardware debugging information by Joerg Hansmann.
• Testing tips gathered from the mailing list by Jim Peters.

Kits

Olimex, an electronics manufacturer, is selling the bare PCBs and preassembled circuit boards. Their OpenEEG page is found here.

Firmware

• Firmware 2
• Firmware 3