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  • Author Author: ilvyanyatka
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Open Source EMDR Machine #7. Prototype functionality and a Demo Video

ilvyanyatka

Open Source EMDR Machine. The Whole Blog.

 

 

This blog post describes steps to use the machine and has a prototype run video. There is still a lot to do.

 

 

Machine view

 

Right now all the parts are connected by simple wires and I will be working on adding connectors and nice expandable double wires.

In this case all the part can be set up around the room conveniently for the therapist and the client.

 

This is how machine is looking now:

image

 

 

There are also software issues, for example refresh speed issues with BLE - with higher refresh speed BLE stops working. Software cannot be deployed on Android yet.

I will be fixing this issues too.

 

 

Prototype functionality description

 

But overall machine will work like this:

First, user is giving 2 options: to run EMDR machine on Arduino, or on PC/Android.

If user selects Arduino - he then see additional options: to scan for BLE devices and connect to "EMDRArduino" device.

For both options user can select to use Light and Sound for bilateral stimulation.

For Arduino option user can select Small tappers - to hold in hands or Large tappers (both are vibration motors) - to be put on chest.

Then user click Preview and machine starts.

For Arduino version user can change:

Speed of stimulation. For example, stimulation makes the whole circle in 1 second, or 4 seconds.

Brightness and Color of Light.

Sound and Tappers are triggered when Light is less than 1/3 from the edge of the light bar. Sound is 440Hz, concert A frequency. I think it is the most pleasant to a human ear.

User can always press Back button and adjust Light/Sound/Tappers settings.

 

For PC/Android part user can see Light/Sound options. After selecting one or both and clicking Preview the stimulation tarts on the screen.

User can adjust Speed, Size of the ball and Color of the ball. Then User can go Full screen (black screen with ball moving in the middle) so options panel does not distract his client.

And he can always go back and adjust the options.

 

 

Demo video

 

 

  • in reply to cstanton

    Thank you. I didn't know that.

    In theory Bluetooth seemed to be the best solution for this project. But I got tired of it being so unreliable and changed the communication to use WiFi. It is much more reliable now.

  • Bluetooth will certainly show its limits here, depending on noise and interference, and connection speed, quality of antenna, etc. Not to mention how Android treats bluetooth is typically awful. Not many devices bother to give Android updates in real time, instead they show you a log of it over time that's stored on the device. You might have to design around any possible delays or not implicitly trust the transmission.