![]() ![]() ![]() Block Diagram of Hand Gesture Controlled Robot.Principle of Hand Gesture Controlled Robot.This letter would then be entered into a communication port which went to the robotic arm. After it was able to detect each though, I had programmed it to type a letter for that thought that corresponds with the one programmed into the the arm. ![]() Originally I had imagined the movement itself but this proved to be difficult to recognize because it was a set of thoughts rather than one continuous thought. This way, when it sees those patterns again, it know which position I was imagining. To train it with my mind, I gave it many sets of information of my brainwaves. To control the robotic arm with this device, I had the program track my brainwaves as I imagined the possible positions of my arm. ![]() Of the EEG headsets, the one that stood out to me was the 300 dollar Emotiv EPOC headset due to its 14 sensors that can pick up cognitive thought compared to the cheaper ones that only sensed concentration levels. It also means that without nerve rerouting, not all of the arm can be controlled. First of all, this restricts it to people who still can control that muscle which rules out anyone who is disabled due paralysis or something similar rather than amputation. The EKG sensors require muscle contractions the area above the prosthetic. Of these two, I saw the EEG headset as the clear preferable method. Looking a the available choices, the EEG headset and the EKG sensors seemed to be the only methods of control which allowed for a low budget and didn’t require surgery. This is the most important part of the system which makes it interesting. I will not go into much detail here on how to build the robotic arm due to the fact that it is covered well on You can get the files for the 3d printed pieces here: Instead of the HB802 servos use these: they are much cheaper but just as good When one of these buttons is pressed, the arm moves in that direction for however long it is held. I coded each degree of motion to correspond with two buttons on the keyboard, one for each direction. I had also used different parts in the case of some servo motors where I could find ones very similar from different sources for about half the price. I used its design as a base making changes to have it fit my function. The arm part of Inmoov acts very similar to a human’s and would be very helpful. When I came across Inmoov, an open source 3d printed humanoid project, I had decided the best path would be to make and use an iteration of its arm. Because I would be using my public library’s 3d printer and I didn’t have one of my own, I would have been unable to prototype regularly make changes through testing. In the beginning, I had plans to design and build my own robotic arm that would have every function of a regular human one. This will successfully enable many more people in need to be able to utilize the available technologies to its fullest potential and restore not only their limbs, but also their lives. Overall this $500 price tag is almost nothing compared to the hundreds of thousands to millions of dollars required for the current technology. This robotic arm based on the Inmoov project costs less than $200 dollars for its construction and the brain interface uses a $300 headset from Emotiv. After doing research, I discovered alternative ways to achieve the task which employs different technologies and components for a fraction of the cost. I wondered If I could develop a system that is affordable to most of those who need it. The whole system requires hundreds of thousands to millions of dollars to develop. The robotic arms that these systems use are also extremely pricey. The surgery required is very complicated and costly. Although they are a great way to help the disabled, these new systems are very costly to develop. These systems, still in development, either connect to existing neurons or to electrodes implanted into the brain to decode the signals from the brain and use them to control a robotic arm. Recently, groundbreaking ways to do just that have been successfully developed. Until about five years ago, the idea that these people could have a prosthetic arm that wouldn’t just serve for aesthetic reasons, but instead would act as a way for them to regain functionality with natural control via the brain seemed highly far-fetched. More videos will be on as soon as I get them uploaded Today, millions are suffering due to the lack of a functional arm preventing them from doing things we take for granted. This is a video of the hand being controlled by the brain opening and closing: If you like this please check it out and vote for me when it becomes available. This is a project I did for my Google Science Fair Entry. ![]()
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