As Nasa Space App Challenge 2020 Theme is "Take Action" . So our prime focus was to Take Action and make the final product so that we don't only talk and have model in softcopy but we wanted it to be in our hands. So We built the Final Product which is Working!

Here we are with our Final Product of Mouse for Specially Abled people :

Approach

We thought that if we can develop something out of which we can control Computer we are almost done So I focused on building an assistive system for them.

Working in summary

We used MEMS(microelectromechanical systems) gyroscopes. MEMS are angular rate sensors, which are used whenever rate of turn (°/s) sensing is required without a fixed point of reference or it is the angular acceleration.

We then Mapped it to displacement of the coordinate of Screen of the Desktop.

We have Used then Mouse library and connected it with the output of MEMs via Microcontroller.

We worked with I2C communication protocol

For the Click We used a cheap sound sensor whose work is to send signals whenever there is a blow and then map it to 0-1023 and from there whenever we get a value greater than 500 we make a signal and then we map it to the mouse click libraries and thereby click occurs!

Next problem was that It was working great with left click but what about other clicks so After thinking a lot about it we thought of building UI for our Project so that It can have more Clicks and We Coded in Java and Built the UI

(Sahayak is the name Given by Our Team)

It worked Great! As per the Click It changes the click mode we made to that if we get this click then this button should Work!

We had to think about lots of different

• Coding techniques
• Optimization of Code
• Changing Algorithms
• Integration of Java and C++
• Minor but Mind Boggling Algorithms

and thereby Reached to the Solution after days and Hours of Work!

Functions :

• left click of Mouse
• right click of Mouse
• left click and hold of Mouse
• Works with Virtual Keyboard

and we can have much more functions.

Construction(Hardware) :

For Mouse :

We've used

• Microcontroller
• Cheap Sound sensor
• Gyroscope (MEMS based)

For Keyboard :

We'll use

• Virtual Keyboard

For the Rover prototype(this is just for a different kind of application by this Even Cars Could be controlled by the People with paralyzed or with No hands and legs) :

• Arduino
• Motor Driver L298N
• nrf24l01
• Lead Acid Battery

Algorithm

• Take Values of angular acceleration from any movement (Head Movement)
• Puts Cursor on the screen as per the Coordinate
• Checks for the Mode from the Software
• Accordingly Clicks when Sound sensor have analog value more than 2.5v
• Repeat from Top

Design Process

• For the Box - Acrylic Sheet
• For the Band - Jute belt
• For the Support of Sound Sensor - Metal Spring

Coding languages

• C++
• Java

Software

• Arduino IDE
• Processing

Affordability

• Microcontroller $ 6
• (MEMs based Gyroscope) $ 2
• Cheap Sound Sensor $ 1
• Fabrication $ 1
• TOTAL $ 10

It is a cost effective Solution and is affordable to everyone in Need!

I hereby Claim the Originality of my Project and this technique is not available in the Whole Internet

Future Aspects

Will Extend it to more types of disability (one of the Rule of "Better Together")

User Manual

Install a Small Software for accessing different clicks(don't Install if you want to use just the left click) and Just Plugin and Play

How I'm claiming that It would work in Space?

I've used Gyroscope and the governing Equation of Gyroscope is :

𝑀_𝑒𝑥𝑡= I ω〖" ω" 〗𝑝

I = mass Moment of inertia of Spinning

ω = angular speed of rotation about its own axis(angular speed of spinning)

〖" ω" 〗𝑝 = angular velocity of precession.(angular velocity with which it precess to generate gyroscopic couple)

𝑀_𝑒𝑥𝑡 𝑑𝑖𝑟𝑒𝑐𝑡𝑙𝑦 𝑝𝑟𝑜𝑝𝑜𝑡𝑜𝑛𝑎𝑙〖" ω" 〗𝑝

When   𝑀_𝑒𝑥𝑡=0 Then  〖" ω" 〗𝑝=0

Mass Moment of Inertia cannot change

m will remain constant for our purpose

k (radius of gyration) is a geometric quantity

I=m𝑘^2

ω =VxR there is no term of gravity and it would even work more better in Vacuum due to less friction. (V = Velocity, R= Radius(a length))

〖" ω" 〗𝑝 is also the same as ω which will depend upon V and R!

So there we are done We have an equation which don't have a gravity dependence Hence It will work in Space without gravity and in Vacuum.

• Thereby It became the First Mouse for Specially Abled People that would Work in Space.
• It can be used by Normal Astronauts too in case of Emergency Paralysis of Hands or legs or both
• If we are can think of colonizing planets then why not start with training a specially abled Astronaut.

Specially abled Astronauts can be of a great use

Disabled astronauts offer unique solutions to emergencies in space

During the Mir fire, thick smoke obstructed the astronauts’ vision. Without being able to see, the astronauts could not find the Mir’s fire extinguishers.

A blind astronaut would have had no difficulty locating the extinguishers or any of the station’s other vital tools as he/she is equipped with it. But malfunctioning lights present no problem to a blind astronaut.

Then there are people who have lost their limbs. Leglessness is no problem in space’s zero gravity. A legless astronaut can get into spaces in a craft that other astronauts may not be able to squeeze into.

And there’s another advantage of handicapped astronauts: neural plasticity. Research shows that the brain rewires itself to give superpowers to the disabled. For example, the blind develop supernormal senses of sound and touch. Amputees develop the ability to accomplish miracles of strength and dexterity, like the championship running of Oscar Pistorius. In addition, astronauts missing arms can be equipped with specialized prosthetics that allow deeds beyond the powers of five fingers.

I'm Using almost all Data by NASA (CSA, CNES, JAXA, ESA ) as I am Making these data and Projects of participants and making them accessible to 29% of the world which are Specially Abled People.

Assistive System based Mouse for Specially Abled People and Specially Abled Astronauts 

Materials Used

This Picture Explain the Change that My project is bringing with Solving for "Better Together"

Not Only this My Fellow Mate Participants of NASA Space App Challenge Making Apps, Websites and a lot more but they aren't accessible to the Physically Challenged people But Now with My Project they will be able to Use those Projects!

Link to 30 sec Video Demonstration : https://www.youtube.com/watch?v=wM3-51dN1OU

I'm Using almost all Data by NASA (CSA, CNES, JAXA, ESA ) as I am Making these data and Projects of participants and making them accessible to 29% of the world which are Specially Abled People.