Buying the circuit board from somewhere, like open EEG?

[David Hofmann]

Hi Tim et al.,

is there the possibility to buy the compiled circuit board, i.e. the complete myoelectric controller?

I am no electrical engineer and even the engineer from our institute meant that it will take a lot of time with a rather low probability of success given its complexity and the many SMT soldered components.

We would like to use the myopen device for two purposes:
1) myoelectric signal analysis for prosthesis control
2) art performance augmentation with myoelectric signals (done in cooperation with the lab of Atau Tanaka from the Goldsmiths University London)

We could contribute by means of analysis software and will certainly feature it in our articles!

I am in contact with more groups working in the field of myoelectric signal processing from Padova (Italy) as well as Paris (France) who would be interested in working with this device and also contributing to its development.

However, currently I am stuck with the overwhelming complexity. I would need an exemplar to see what we can do with it before I can convince our colleagues to join efforts and work on it.

Any help and information is appreciated a lot!
  David

[Jonathan Kuniholm]

David
I'm traveling until July 15 and can't fully engage on this until I return.

Tim and I were just talking about this and would really like to get other users, and particularly EMG users involved.

Funding is of course a major issue, but I think if you have a prototyping budget among you that could cover third party fabrication (guessing $1000 - $1500 per board for fewer than 10?), that we could muster sufficient help to make it work (that means I'm hoping we could get spare cycles from Tim).

I'm speaking at LinuxCon in Aug, and would love to be able to advertise an effort like this to try and get others involved.

Let us know what you have to work with, and maybe we could have a call in a couple of weeks.

Thanks,
Jon

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[David Hofmann]

Hi Jon, this sounds great!

I guess it should be possible to find coverage for expenses in this regime but I have to inform myself at the respective offices.

Quickly, regarding the specific measurements:
We need to perform forearm sEMG measurements for both applications (prostheses and performances). Excellent would be to have dry electrodes and something between 8 and 16 channels will do the job. An important additional feature would be if we could use the device with battery and some kind of wireless connection to transmit the measured data because this is really what we cannot perform currently with our huge and very expensive EMG amplifiers...

However, this is just a wish list; if these points can be fulfilled would be wonderful (specifically the last point which could bring some important advancement to prosthetic control studies: long time series recorded during real life activities) but we will still be happy to  work with the open source device without those requirements fulfilled. (btw. we could also perform a study to compare performances between "standard" EMG amplifiers and your device)

A call sounds like a good idea to talk about details. And surely I would be happy if you can advertise your project with this effort at a linux conference!
I will be back at you in about mid July then.
Have a save journey,
David

[Joshua Wojnas]

small batch assembly I use and osh park.

I got some designs robot assembled here are pics.

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[David Hofmann]

Hi Joshua,

what exactly is your board to be used for? I see many LEDs. I am looking for a device to pick up myoelectric signals.

Thanks and all the best,
  David

[David Hofmann]

Hi Jon and Tim,

just wanted to quickly ask whether there are any news about the possibility for me to acquire an assembled board from you. We have two commercial devices available in our lab which can acquire EMGs and send them via wireless to the computer. One is a Delsys and another is from OT Bioelettronica. The latter is a very first model of a wireless acquisition system and is yet not that convincing in terms of performance. The price is quite high for both, therefore, especially for application in artistic performances those commercial devices are by no means feasible. We really hope that the open myocontroller can aid here and would be extremely happy to test and compare it and support its further development by any means!
Certainly we can contribute to the development of software, currently we lack expertise on the hardware side though. If we can help in any other way please let me know.

Best regards,
  David

[Jonathan Kuniholm]

David
Let me know when today or tomorrow you (Tim too) could have a call about this. Anyone else interested please also let me know off list. I'll post Conference call into on the list when we've arranged.

Jon

[David Hofmann]

Hi Jon,

I can be available on Friday only. Then preferably in the evening. Would that be okay?

Best,
David

[Joshua Wojnas]

That was a led board to test small batch assembly the eeg boards with capactive active electrodes with digitisation on them is next.