Hello, I was surfing the web and found OpenEEG website and its subsite about using AM / FM modulation to get signals from EEG electordes to then pass they later as sound to soundcard and demodulate them in software. What I want to do is connect out of the amplifier circuit (red frame) and connect it to the Arduino analog port. Would it work and if so, could I use more of such circuits to build multiple channels EEG? The circuit bellow I think is AM modulation. I would be thankful for help!
Maybe, find out yourself.
For Arduino interface remove the modulator.
1 Like
I'll try but I was thinking if there is a simpler way, also I made emulation and don't know if this is good and here is code, output will be inside analog port. I am asking if this is good cause I know that op-amp in center have more than 2 ports but one here has only two and was wandering if this good or just be short circuit
$ 1 0.000005 6.450009306485578 50 5 50 5e-11
w 64 224 144 224 0
w 64 288 144 288 0
r 144 224 208 224 0 1000
r 144 288 208 288 0 1000
d 208 176 208 224 2 default
w 208 224 240 224 0
d 240 224 240 176 2 default
w 208 176 240 176 0
w 240 176 272 176 0
g 272 176 272 192 0 2
d 208 288 208 336 2 default
g 208 336 208 352 0 2
w 208 288 240 288 0
d 240 336 240 288 2 default
g 240 336 240 352 0 2
w 240 224 304 224 0
w 240 288 304 288 0
c 304 224 304 288 0 1e-10 0.00004983484468134997 0.001
409 352 256 480 256 1 0.6 -0.9188475446980551 0.0231 0
w 304 224 352 240 0
w 352 272 304 288 0
w 416 224 416 176 0
w 416 176 448 176 0
c 448 176 496 176 0 1.0000000000000002e-10 4.611703056507596 0.001
g 496 176 496 192 0 2
w 416 176 416 144 0
w 416 288 416 352 0
w 416 352 416 416 0
w 416 352 448 352 0
c 448 352 448 384 0 1e-7 3.863067669481681 0.001
g 448 384 448 400 0 2
v 528 256 480 256 0 0 40 5 0 0 0.5
w 528 256 560 256 0
w 560 256 608 256 0
w 560 256 560 288 0
r 560 288 560 352 0 1000
g 560 352 560 368 0 2
409 608 272 736 272 3 0.6 0 0.023100000000000002 2
w 608 288 608 320 0
w 608 320 608 352 0
w 608 352 608 384 0
r 608 384 608 448 0 10000
g 608 448 608 464 0 2
w 672 240 672 176 0
r 608 320 736 320 0 10000
w 736 304 736 320 0
w 736 320 736 352 0
w 736 304 736 272 0
w 736 272 768 272 0
c 608 352 736 352 0 1.0000000000000002e-12 0.0012328614074230708 0.001
R 64 224 64 160 0 0 40 0.00016999999999999999 0 0 0.5
R 64 288 64 352 0 0 40 0.00007 0 0 0.5
w 352 240 288 240 0
w 352 272 288 272 0
r 288 240 224 240 0 1000
r 288 272 224 272 0 1000
w 224 272 224 256 0
w 224 240 224 256 0
a 208 256 144 256 9 15 -15 1000000 0.00011921327494538261 0.00011921446707813207 100000
w 208 240 224 240 0
w 208 272 224 304 0
w 224 304 224 368 0
w 224 368 112 368 0
w 144 256 112 256 0
w 112 256 112 368 0
r 112 256 64 256 0 1000
w 64 256 48 256 0
r 48 256 0 256 0 1000
w 0 256 0 288 0
w 0 288 16 288 0
g 16 288 16 304 0 2
w 768 272 768 128 0
w 768 128 544 128 0
o 48 64 0 4099 5 0.00009765625 0 4 48 3 72 0 72 3
Have you read and understood this?
https://openeeg.sourceforge.net/doc/WARNING.html
I wont select an important extract from it its ALL IMPORTANT
This sheet shows more channels
1 Like
I'll read this again and thanks for help
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