I would like to create a prosthesis with: an actuator to rotate the arm, an actuator to rotate the wrist, an actuator for bending and extending te arm, an actuator to allow the end to grasp objects, sensors to modulate the pressure.
Looking at the records from past years I found:
this glove for enhancing movements,
this prosthetic hand,
this robotic hand,
another robotic hand
First of all I will design the hand assembling the individual phalanges and the palm/back, then I'll design the arm. After that, I will connect and program the myelectrical signal.
The hand and the arm will be in Pla. Regarding the myelectrical signal, I found interesting these:
MyoWare Muscle Sensor and
Myoware Muscle Sensor Alternative: Grove – EMGDetector
PLA fromAmazon;
MyoWare Muscle Sensor from Sparkfun;
(eventually) Grove – EMGDetector from Seed
One kg of Pla costs among 20/30 euros;
MyoWare Muscle Sensor costs 38 dollars;
while EMGDetector 30 dollars
So, in total, I think it would cost no more than 50 euros
At the moments I think I will made only the hand and the arms, but I would love to create also the myelectrical boards
Regarding the hand and the arm, only CAD. Regarding the board: I would create the schematic and the routing with eagle, then I would mill, weld and program them.
My biggest concern is that it doesn't work and I can't connect the prosthesis to a person's limb (I still don't know who to make it try it on).
I don't know how it could be evaluated, I'm studying to acquire the necessary knowledge especially for 3D modeling. However, I think that it will not be possible to create an aesthetically unrecognizable prosthesis as such. I will strive to create them life-size and I think I will probably sew a glove of skin color to achieve my goal of creating a beautiful looking prosthesis. I am aware that several hands have already been created, but I would like my effort to distinguish them from the usual prostheses to be appreciated.
Let me glow green will be a game to allow children to have the perception of the distribution of their weight on the foot. It is a physiotherapy exercise that is really boring for many children. That is why I want to make it a game. The child will get on a platform where there will be three fsr. In front of him will have a billboard with a 3D printed foot where there will be rgb leds in the same position as the fsr (front, middle and back of the foot). In places where the child will put too much weight, the LED will turn red. Where the child will put a lot of weight (but not too much), the LED will turn orange. In places where the child will put too little weight, the LED will turn blue. Where the child puts the right weight, the LEDs will turn green (this is why "let me glow green": this is the mission). Furthermore, using Processing I will also insert a sound feedback in which I will insert two of my recordings: "Don't give up, you can do it" when the child has not yet reached the goal and "Congratulations, you did it!" for when he has reached it.
I honestly haven't seen similar models yet. This is an idea that came to me by talking to my tutor about my desire to make at least one of my cousin's physiotherapy exercises more fun.
First of all I will create the boards. I think I will make at least two of them: one with FSRs and one with LEDs. Then I will model the foot on OnShape and print it with the Ultimaker. Then I will make a wooden platform to which I will attach pieces of felt that I will cut with the laser cutter.
I will use white or translucent pla, felt, plywood and all board components.
Pla and felt from Amazon
All the electronic components from Sparkfun
One kg of Pla costs among 20/30 euros but I don't think I'll use that much! In any case, considering that the components cost as little as a few euros, I don't think it will cost more than 30 euros for my entire project.
I will not use anything ready, I will create everything.
I will model the foot on Onshape and print it with the Ultimaker. I will use the Illustrator and the laser cutter for the wooden platform and the felt footprints. To create the boards I will use the Eagle, Gimp, the mods, the cutter and the welding machine.
The first question that comes to mind is "Will I do a good job?" and the second is "Will my cousin and all the children who have to do this exercise like it?
I will try to put together the highest number of knowledge acquired during the Fab Academy. I didn't have any previous knowledge, so I already know that a professional and refined work will not come out. But it will still be a great satisfaction for me and I hope that the examiners will take all my efforts into account.