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As embedded in the Mindflex toy, an SMD resistor sets it to mode 0x01 by default. The ThingGear ASIC has several modes of operation.

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While that's all that's needed in terms of hardware, there is a software challenge. To use the Mindflex EEG with other devices, we will simply connect the ThinkGear chip's receive and transmit lines to an HC-06 Bluetooth radio (about $10 with cables). Unfortunately, while the Mindwave Mobile's radio is Bluetooth, the Mindflex toy uses some other kind of radio.

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This chip communicates over TTL serial with a radio, and the radio in turn communicates with other devices, like the Mindflex toy base station.

The Mindflex, Mindwave Mobile and a number of other EEG headsets use a ThinkGear ASIC chip. For safety, EEG headsets need to be isolated from anything plugged into mains. I then edited the Instructable to reflect this, since it was a great idea.ДЇeel free to skip this background, but it explains why some things are done as they are. Soldering iron, solder, miscellaneous wires, electrical tape.ДЄcknowledgments: I got the idea for stuffing the BT module inside the Mindflex headset from this Instructable.(If you use a more expensive RN-42, you may be able to configure it via Bluetooth.) This is not a part of the finished project but is needed once to set the baud rate on the HC-06 module. This can be a second HC-06 module, a USB-to-TTL-serial link, an Arduino or a Brainlink (I used a Brainlink). A device that can do 9600 baud TTL serial output.Make sure your module can be powered by the 4.5V DC input that powers the Mindflex. My instructions will assume that this is an HC-06 module. Mindflex headset, either from the original toy or from the Mindflex Duel (doesn't matter which one).This is not a medical diagnostic or treatment device. That said, the project is only powered by three AA batteries.

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Don't use it if you have cuts where the electrodes go as that can decrease skin resistance.

Compatible with Mindwave Mobile apps (with simple initialization app).Дisclaimer: Anything electrical hooked up to your head (or heart-you can use this for heart monitoring) is potentially risky.

No need for SMD soldering to enable raw output mode, and the modified device should still work as the toy.

Powered from the headset's own batteries.

(Full disclosure: You will need a second TTL serial link to set the baud rate on the HC-06, and you can use an Arduino for that, but you can also use a second HC-06 module, a Brainlink device, a USB-to-TTL-serial link, etc.)

No Arduino, just a simple Bluetooth module (cheaper, simpler).

There are many EEG projects based on the Mindflex toy on Instructables ( here's one, here's another and here's another) and elsewhere. With the raw data, you can also capture ECG images of heart activity, though you need to be particularly careful, especially being careful that the device not be connected to the mains, as the heart is very sensitive to small electrical currents. Since you can get Mindflex headsets on ebay for $15 or less, that means the cost of the project can be as low as $18.

Mac terminal emulator 9600 baud how to#

I will explain how to attach a $3 Bluetooth module to make this into a full-functioned Bluetooth EEG headset with raw data output that should be usable with most apps that supports the Mindwave Mobile EEG headset (the Mindflex uses basically the same ThinkGear chip that the Mindwave Mobile does). The Mindflex (and Mindflex Duel-the relevant hardware is supposed to be the same) toy lets you control the height of a ball with mental concentration.