Extending a helping hand to those who miss one!

Mind control technology has been the technology I have been about for quite sometime in my life, while neuroscience has always been an area that I have been extremely passionate about.

ICombining both, I have also been dreaming about building cyborgs and may be even create immortality. No harm dreaming or even trying! As I started exploring the world of electronics and neuroscience, I figured out how to build mind controlled technology and make one of my dreams come true.

However, the biggest challenge usually happens to be the price of the sensors to used in building the technology. Fortunately for me, I had just won a design challenge by Atmel in which I won a prize money of $500. So I utilised that money to buy the sensor.

How did I take that forward and build a prosthetic arm? .

For people who have lost their arm or legs, a mechanical or electric arm can be fixed to assist them. This will be an electrical prothestetic arm to be controlled by their mind.

The main sensor we used is called EEG sensor which records the brain signals in the form of frequency.

The brain communicates to other parts of the body by means of a small electric impulse called synapse which are small voltage pulses that pass between the neurons.

This devices built record all the voltage from the brain and amplifies it and sends it via Bluetooth to the prosthetic arm. The EEG sensor was bought from Neurosky.


Rn41n is a Bluetooth device which connects to the mindwave as master and gets the raw data from the sensor. This is the part that took me around 4 months to configure because it was a rather new technology in the market, back then.

The Arduino Mega gets all the data and processes the attention and meditation level to be controlled. Based on this logic, the Servo get connected to the frame and driven.The frame of the arm is laser cut from an acrylic sheet and fitted with the help of a screw.


The EEG sensor is connected to your head to read all the brain data. Brain wave consist of several frequency levels like alpha, beta, gamma, and theta, just like what you see in the normal medical EEG graph.

· Alpha defines your relaxation level

· Beta defines your meditation level

· Theta gives your physical activity near the sensor placement.

The attention level of the user is then sent to the Arduino Mega.

Arduino mega decodes the Bluetooth data and gets all the raw data along with the attention and meditation levels.

If the attention level increases from 60 to 80, the arm will move upward. If it reduces from 50 to 30, it will move the arm downward. And if the range is in the middle, the arm will stop.

The main challenge in this process is that it needs intense mental training for the user in order to play with the attention level and control the arm directly. The cool part about this project was that I got to test the prosthetic arm on me. It took me one step close to being a cyborg! I will soon upgrade this system in this lifetime. And eventually, you will see me as a cyborg. Wait for it!



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