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7. Circuit Board Instruction Manual
These are very specific instructions and I recommend following them in the order provided to make sure the EEG functions properly and doesn't short!
All of the instructions for this circuit board is on here (the colored picture isn't 100% accurate and I would instead go based off the schematics)
Make sure the circuit board matches the schematics part by part, wire by wire, and if it doesn't let me know.
(closer up pictures of values)
Aux cord Datasheet (can be rotated if using Google Chrome)
- We're looking at the "Pin Assignment" Box
Aux cord pin labels (Left, Right, Ground)
- In this case, it seems that the red wire is the left input, and white wire is the right input
- Blue - Electrodes
- Red - Positive end of battery
- Black - Negative end of battery
- Green - Aux cord ground
- White - Right (white wire) input
Board w/o Capacitors (less clutter)
Probably easiest to lay the board in front of you as it is in the picture
- Plug in the electrodes (but don't put them on yet)
- Plug in the aux cord to the board and then the computer's audio jack
- For safety reasons, I suggest first plugging in the battery to ground (bottom positive(red) bus) then plugging in the positive and negative inputs (top two power buses (red, blue))
- Cut some electrical tape for each electrode
- Tape one electrode on the bone directly behind your ear
- Tape the other two to your forehead
- Both the Processing_Java.pde and Processing_Java_Pong.pde files are functioning properly
- Make sure to adjust your recording audio device as "line in" or "mic in" (it varies for every computer, trial and error is your friend here)
- If your audio manager allows you to turn off "Noise suppression" and/or "Acoustic Echo Cancellation" make sure to do so
The aux cord or code seems to be really weird about the left input. The code calls for in.left, but for some reason, at least on my computer, the right input seems to be giving the actual output. It may be different on your computers, so if the right(white) input doesn't work, try the left(red) input
Let me know, I'll try to help as much as I can!