From: sleeper75se (sleeper75se_at_yahoo.se)
Date: 2002-05-25 01:42:32
Hi Yaniv, and everybody else.
Sorry about the delay... some unrelated things got in the way, but
here we go.
I just uploaded the schematics and layouts and things to the files
section (under Files/Hardware design/CheapEEG) at Yahoogroups. Feel
free to copy it to the openeeg site at Sourceforge (btw, I've
forgotten my password to the home page (not to source forge itself) -
can you help me with that?)
A couple of notes:
I'm using an ATtiny15L AVR microcontroller. It costs about $4 - $6
less than an AT90S4433 (used in the ModularEEG). It would actually
make more sense to use an AT90S4433, but keeping the cost down was
the priority.
Costs:
Parts that go on the PCB: about $60
Factory made PCB: $30 (Home-made: $5)
You will also need some copper plates (to make shielding from), a
plastic box, two 9V batteries, (battery charger), cables, connectors,
electrodes and various bits and pieces (copper wire, on/off switch
etc...) I'm not sure how much these things cost, but probably no more
than another $60.
Total: $150. I honestly don't think you can get below that unless you
start volume production or something.
Ok, anyone interested? Questions or comments?
Regards,
Andreas
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:43 BST