Searching on google with ‘Mindflex eeg’ keyword you’ ll find a lot of interesting articles in how to modify a Mattel Mindflex game headset in a real very low cost one channel EEG device :
|Mindflex Headset + HC-06||Mindflex Duel Headset + HC-06|
So I bougth from Ebay an HC-06 bluetooth module for less than 5$ and a second-hand Minflex Headset replacment for about 15$ once, both Mindflex and Mindflex Duel headset could be modified.
They contains different Thinkgear ASIC chip version .
I bougth it from US but I live in Italy so I had to switch nocth filter from 60Hz to 50Hz.This is very simple in Mindflex Duel headset model only, unsoldering a connection with a desoldering pump (5$ in all eletronics store) and soldering again (solder and pond 10$ in all eletronics store) on opposite site (see pictures below) . Instead Mindflex headset comes with a notch filter driven by an SMD resistor that is really annoyng to desolder and it has to solder in opposite site or replaced by an bigger ¼ resistor connected to ground, little bit tricky.
|Thinkgear Mindflex Headset||Thinkgear Mindflex Duel Headset|
So I suggest to whom has few practice in solder and unsolder ,as I am , and live in 50Hz countries to buy a Mindflex Duel headset then It will be more simple to switch notch filter.
Connect RX, TX, VCC and GRD as showen in web tutorial and from that point you are able to develop a driver in order to send to Thinkgear two sequential commands :
First command is ‘(0x02): 57.6k baud, normal+raw output mode and then send a ‘bit (____0100): Set/unset to enable/disable raw wave’.
The game are based on movimg the pad using Attention eSense signal plus some other computations but I used raw signal to develop a blink filter in order to use it like a command : when I blink eyes three times I stop/start the pad.
This is my very first prototype video, enjoy it.
A complete game It will be avaiable soon on Play store.
ANY EEG HEADSET MODIFICATION AND USE IT IS AT YOUR OWN RISK. MAKE SURE YOUR HEADSET IS NOT CONNECTED BY WIRE TO ANYTHING PLUGGED INTO THE MAINS.
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