Very nice project

[Arvrairobo]

how can i contribute on it? is this project still progressing? what is a final output of the project? is there any demo or video or something for this project?

[snue]

Hey @Arvrairobo this project is currently a bit disorganized. It's mostly a collection of scripts we used at some point to transfer data in various prototypes. And the project evolved quite a bit since the last uploaded state, including custom BluetoothLE boards, a sole with >900 measure points for pressure, and some visualization using Processing. The future plans are mostly up to @seihan, who should also push some commits again :stuck_out_tongue_winking_eye:

Regarding contributions, it's mostly about imagination. What could be a useful feedback mechanism from the pressure measured under ones' feet? We currently have a setup with small vibration motors attached to crotches, and the visualization on a screen. No publicly presentable videos/demos though.

Also regarding BluetoothLE, we are not happy with the achievable bandwidth over BLE-UART. A custom Bluetooth profile might help a bit, albeit I don't think it will improve a lot, as BLE is very limited in nature.

Is the repository in any form useful to you currently? It could do with some cleanup. And a better documentation in which context each of the Arduino projects was used.

Feel free to suggest anything.

[seihan]

Hi Arvrairobo,

thank you for your message and sorry for my late reply. I currently designing the next prototype to read out a fsr sensor sole from Tekscan 3000e with 956 sensor points. This hardware will also have 4 motor driver, acceleration sensor and pins to extend it with sd-card or wifi module. All the code based on Adafruits Bluefruit LE library and is prepared for this hardware.

Next steps are:

• programming different motor profiles to simplify the tactile detection of the single motors
• rearranged Adafruits Bluefruit LE Connect App and implement the "receive_message" function
• designing a housing
• extending the App with synthesizer modules for audio processing

You are very welcome helping this project. The main goal is to create new sensing input strategies, which would be interesting for different kinds of handicap (blind, deaf, amputated, phantom pains, ...) and of course for new ways of interacting with machines and video games.

[Arvrairobo]

@seihan and @snue Thank you for a warm welcome and all those useful information. strange thing is your reply went into spam in my email so i was not aware about reply of yours, today only i checked spambox and i have seen your message there.

Let me start with my introduction for who am i and my mission is :)

so currently i am working on a project that is similar to bionic hand (Artificial hand), currently trying to 3d print it and then with all the bits and pieces of other code and thing that is ready, i will start to sell it at really low cost so that all the people who are suffering from transradial upper limb, they get benefits out of it, we also tested prototype version on some people but then one of the person told me sir why you are not brining something like (Artificial leg) for amputated. so at that time i thought why not?

so i started to google it up and github and i came to your repo, i really liked this project so i thought to message you.

so now currently i am not sure if you are planning or you are on track for the same to build similar project that is for amputated or artificial feet or something? are we doing the same?

so what you are building currently is leading to solve the above problems that sky is not the limit, because developing nation like india and other countries have lots of people suffering from this and currently whatever artificial limbs people are selling are really of no use.

and for me to really contribute on this project, i also need to be on the same page as you, currently i am seeing lots of code in the repo but really no helpful document of what is done so far, what is remanning, what is achieved, where to go etc etc

so let me know how would i get those information?

[Arvrairobo]

let me know @seihan @snue

[seihan]

Hello Arvrairobo, I'm very sorry for this very late reply.

the aim of this project was a sensory prosthesis for those who have no sensitivity in the feet. I've tried to find sponsors for the development and production of prototypes. I failed at this.

The code is very outdated and also the documentation. The achieved goals are a working prototype with a flexible sensor sole and a bluetooth connection to a fitness tracker. I was lost in a job for the last years and got some know how. If you still working on your project and if you need some help. Please let me know.

All best Hannes

[Arvrairobo]

Hello Hannes, thank you for the reply after about 3 years :) good to see your message.

so i am still struggling with understanding of your project, what is your project all about? what it does? if you could expain me in laymen term, that would be great. also if you have reference material from which i can understand what you are trying to achieve and how far we have reached on that.

Are you still interested doing it?

Thanks

[seihan]

Hello Arvrairobo,

the project is about how to replace the lost of sensitivity of feet with an electronic sensor-actor-system. The sensor at the feet measures and transmits pressure values to an actor at the upper part of the body. The prototypes we created are sensor reading devices for a flexible force sensitive resistance sensor. We also built actuators but quickly realized that this topic is too complex. Therefore an existing product, a 10 Euro fitness wristband was used as actuator.

The principle of operation is the reproduction of the pressure under the foot by vibrations on the wrist. The pressure is measured under the entire foot surface and focused on the maximum areas. Three different vibration patterns are provided. A short pulse for the front foot, a long one for the rear foot and a medium one when the pressures for the front and rear areas are equal. The time interval between the vibration pulses becomes smaller proportional to the pressure.

The idea is to improve the feeling for balance via this information.

I am still interested in this project but because I believe that there are many people who would find such a prosthesis helpful. However, the hardware developed so far is designed for a special sensor. At the moment I don't have the time for this project.