Sensors for Finger Motion Detection

Question

Hii, I have been researching about sensors that could detect the motion of fingers,

For Eg: If my finger is at(0,0) and if I move my finger slightly down I need to detect the y-axis movement

As far as I searched, they prefer to use Accelerometer and Gyroscope Sensors, but I could not achieve this... If we could do with these sensors. Kindly suggest some ways to achieve the result... If not Kindly suggest is any other sensor can help here...

Thanks in advance

hugohu · Answer

I remember the Pimoroni Skywriter hat for the Raspberry PI-

Using Pimoroni's Python API you can read off the positional data (x, y, z) and common gestures like flick left, tap, and double tap.

Electrical near-field 3D/gesture sensing
4-layer PCB for best sensing performance
Senses from up to 5cm away
Full 3D position data and gesture information (swipes, taps)
Comes fully assembled
Full Python API

This is compatible with the Raspberry Pi Models 3, 2, A+, B+, and Zero!

This is from ^^^ adafruit

Perhaps Electrical near-field 3D gesture sensing>

or this is a touch solution but just get a touchscreen overlay maybe

dougw · Answer

https://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/s2010/ssc88_egl27/index.html https://www.youtube.com/watch?v=pHyNrYRhvSg Flicktek - Gesture Control https://tenzr.me/ https://www.youtube.com/watch?v=jOEcsNmTk7g https://www.robotshop.com/ca/en/usb-flexible-sensor-glove-kit.html?utm_source=google&utm_medium=surfaces&utm_campaign=su… https://www.kickstarter.com/projects/asdffilms/gest-work-with-your-hands?token=4c5da7fd Plexus / High-performance VR/AR Gloves https://en.wikipedia.org/wiki/Power_Glove https://www.ultraleap.com/product/leap-motion-controller/ Gesture Control Glove | Maestro | POWER IN THE PALM OF YOUR HANDS https://mimugloves.com/

dougw · Answer

There are dozens of ways to detect small motion of a finger.

A small sample list of technologies would include:

a switch, capacitance, inductance, resistance, radar, sonar, a camera, heat, magnetic

And each technology has many solutions.

It would be helpful to know more about what constraints and scenarios need to be accommodated so an appropriate method can be suggested.

How big can it be?

How accurate does it need to be?

How many positions need to be sensed?

Does it need to be remote or non-contact?

Does it need to be transparent?

How long does it need to last?

Does it need to be waterproof?

What does it need to ignore?

What is the price limit?

etc.

aswinvenu · Answer

Long back google had a project called soli. This technology is now available in their phones I think.

Check out Peoject soli https://atap.google.com/soli/

This is a high precision radar based technology.

Regards,

Aswin

Fred27 · Answer

Another completely different approach would to use a Leap Motion controller . They work really well for full hand tracking in 3D. I'm guessing it's not exactly what you're after but I thought I'd mention it.

BigG · Answer

There's usually two approaches. First is the state what the objective is or what outcome are you hoping for and then evaluate tech options. This involves detailing the outcome or user requirements. The other approach is to have a technology or technique in mind and then find out what its probable uses could be. So it sounds like the camera or visual method fails on one of your requirements... i.e. having to place hands in a certain region for recognition of gestures... I would think that the more reliable method of hand and / or finger movement monitoring would require the user to wear a glove. Here are two such examples, randomly pulled off from a Google search: https://newatlas.com/hand-movement-glove-capture/60732/ https://advances.sciencemag.org/content/6/19/eaaz8693.full EDIT... I include a PDF attachment. 
 Attachments: Sensordevices2015.pdf

Sensors for Finger Motion Detection

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