#psylink — Public Fediverse posts

A fresh talk on the current state of #PsyLink, the open source myoelectric neural interface:

https://media.ccc.de/v/c4.openchaos.2025.01.psylink

#diy #electronics #rust #slint #arduino #BCI

Our next open chaos talk is planned for tomorrow, at 20:00 in our space in cologne ehrenfeld. yuni will talk about PsyLink, an open source project about measuring electric signals from the skin to use them as computer inputs.

More details on our blog!
https://koeln.ccc.de/updates/2025-01-23_OC_PsyLink_neural_interface.xml

#ccc #c4 #openchaos #psylink

Dual wielding neural interfaces

#psylink #arduino #electronics #diy #emg #bci

The #PsyLink UI can now automatically press a key for you if it detects gestures!

So finally it's possible to play games with it! 🥳

Will record a video tomorrow =)

Yay! Finally got the gesture prediction to work in the #PsyLink UI #rustlang rewrite!

First you have to do a calibration step where you do various movements as instructed on the screen. It trains a small neural network on that data with https://burn.dev

Then, it can recognize the gesture you're currently doing based on new incoming signals.

In the screenshot on the right, you can see the prediction results: "0" (= arm at rest), and when I performed a certain gesture, it changed to "1".

Using https://burn.dev for pure #Rust #MachineLearning on #PsyLink datasets:

https://codeberg.org/psylink/psylink-datasets

Check them out if you're researching #BCI / #EMG, they come with videos and detailed documentation.

Currently working on integrating this into the graphical user interface. Will be tiny enough to run 100% offline on your own device (hopefully even phone!) in the time frame of minutes 🥰

PsyLinks electrode armbands assembled!

If you're interested in #neurotech, #EMG, #BCI, let me know and I can send you one :)

Find out more at https://psylink.me

#electronics #arduino #diy #psylink

I'm also working on an #Android app for displaying the #EMG signals of #PsyLink and for doing magical gesture control of the phone.

It's written in pure #Rust and works on #Linux already, but on android, #bluetooth doesn't work yet. I fear I will have to dabble in #Java to fix this. 😰

Oh the agony. But can't wait for it to work eventually =)

Thanks to @PrototypeFund for funding this!

#prototypefund #slint #madewithslint

Soldering time!

Enough parts for 9 #PsyLink devices 🦾

Thanks to #PCBWay for partial assembly and for covering some of the cost!

#DIY #electronics #bci #emg #ecg #eeg #arduino

The #PsyLink assembly time has gone down to 1.5h since I'm using partially pre-assembled PCBs 😍

Still too long. Should get even faster once I find out how to remove all through-hole components - adding these is the bulk of the work since I have to manually trim them to avoid skin scratches, and then electrically isolate the bottom side.

#electronics #arduino #ble #bluetooth #neuralinterface #emg #eeg #bci #neuralink #diy #pcb

Rewriting the #PsyLink GUI in #Rust+#Slint :)

And finally there's a graph with the biosignals! 🥳

Rust is slower to write than what I'm used to with #Python, but hopefully the result will be more useful. 🦾

#arduino #bci #neuroscience #emg #eeg

Working on a platform-independent #Rust port of the #PsyLink software! :)

Hopefully, soon you won't need a complicated Linux setup with obscure python bloat.

Just a slim binary for every OS. Including Android, if all goes as planned.

Can't wait to control my phone with my electrical biosignals! 🦾🧠

When you add #AI to your product in an actually useful way, then #ChatGPT comes along, overhypes it, and now some people disregard the product specifically because it uses AI :D

#PsyLink replaced most traditional signal processing with convolutional neural networks so that as much information as possible from the electromyography (#EMG) signal is still available for the neural network to extract.

#PsyLink works with the bluetooth backend "bleak" now (https://pypi.org/project/bleak), in case you had trouble setting up the previously only available backend BLE_GATT (https://pypi.org/project/BLE-GATT).

Should be more easily portable to windows/mac now too.

What should the perfect #electronics data sheet include?

I wrote extensive data sheets for the two #PsyLink modules. You can find them here:

Power Module: https://codeberg.org/psylink/psylink/src/branch/master/schematics/power_module4.2/README.md

Electrode Module: https://codeberg.org/psylink/psylink/src/branch/master/schematics/electrode_module3.3/README.md

If there's anything missing, let me know. Hope this helps :)

Trying out a new chip that may make #PsyLink much cheaper :)

https://psylink.me/blog/mcp6n11

More and more #PsyLink devices get into the hands of tinkerers and researchers around the world :)

https://psylink.me/blog/mass

Join us and request your own psylink here:

https://psylink.me/get

#electronics #neuralinterface #diy #arduino #ai #machinelearning #EMG #EEG #neuroscience #opensource #science #cyberpunk

A recent photo of #PsyLink prototype 9 :)

Today's HackChat on Electromyography and #PsyLink was truly 'stimulating'. Many fascinating questions and ideas. Here you can read the transcript:

https://hackaday.io/event/183577-electromyography-hack-chat/log/202475-hack-chat-transcript-part-1

#PsyLink now has a Matrix chatroom! Come join us, contribute your ideas, follow current developments, and collaborate in experiments :)

https://matrix.to/#/#psylink:matrix.org

#PsyLink Prototype 9 is out now!

Will send this out to a potential collaborator, let's see what improvements we come up with together :)

https://psylink.me/p9

#electronics #neuralinterface #diy #arduino #ai #machinelearning #EMG #EEG #neuroscience #opensource #science #cyberpunk

Let's create a future with neural interfaces that are open source, privacy-preserving, non-invasive, and out of reach from surveillance capitalism!

https://psylink.me

Watch this demo video in 1080p on PeerTube: https://peertube.linuxrocks.online/w/vELMqkNxjVWzxUj1f7eCeX

#electronics #neuralinterface #diy #arduino #ai #machinelearning #EMG #EEG #neuroscience #opensource #science #cyberpunk #psylink

#PsyLink is not on #GitHub and #YouTube, but after the recent #Hackaday post which created a lot of exposure, I'm wondering how much more people it would have reached if the project did use those platforms...

PsyLink 8 - Open Source Neural Interface

Watch this demo video in 1080p on PeerTube: https://peertube.linuxrocks.online/w/bf5124d7-4d94-46b6-96c9-06fb0de7ee98

#electronics #neuralinterface #diy #arduino #ai #machinelearning #EMG #EEG #neuroscience #opensource #science #cyberpunk #psylink

#PsyLink Prototype 8 is finally complete, and it feels like quite the nice little beast :)

https://psylink.me/blog/prototype8

This electromyography device allows you to control your computer via muscle movements (and you can pretend to shoot lasers with it.)

While this prototype doesn't improve the #EMG signal quality of older prototypes, it has been designed for quick+cheap manufacturing and solid robustness.

#electronics #neuralinterface #diy #arduino #EEG #neuroscience #opensource #science

I quit my job to be able to develop #PsyLink, and the research & development cost me over 1000€ in materials so far.

Invest in a future with privacy-preserving open source neural interfaces now and keep the project alive! :) Any amount helps!

Liberapay: https://liberapay.com/psylink

Dash: XocV8MudehfcoLvCj2xwaCDKx3EDCbeuCf

Ethereum: 0x880C89B745e82230a1CdAe33EfeCf09011C37c89

#electronics #neuralinterface #diy #arduino #EMG #EEG #neuroscience #opensource #science

Sweet. Using a different amplifier chip brings the material cost of #PsyLink down from ~60€ to ~30€ plus #Arduino (~38€) and shipment, without much (any?) impact on signal quality

https://psylink.me/blog/ina155/ #electronics #diy #EMG #neuroscience

The last piece of the puzzle for the newest #PsyLink prototype is finally designed: The new power module with rubber band attachment points and electrode mounting holes.

https://psylink.me/blog/power-module4/

The manufactured boards should arrive in a couple of days, can't wait to put it all together \o/

#electronics #neuralinterface #diy #arduino #EMG #EEG #neuroscience #opensource #science

#PsyLink has changed a lot in the last 4 months! Check out the summary:

https://psylink.me/blog/batch-update

#electronics #neuralinterface #diy #arduino #EMG #EEG #neuroscience #opensource #science