A sEMG Brain-Machine Interface.

Hi everyone.

We are releasing files and instructions to build your own sEMG armband. Today we will build the scaffold for the armband. I have put a lot of thought into this last design to make sure the armband keeps electrodes equidistant, is easy to install and remove from your arm, can adapt to different morphologies (shape and size) and is comfortable. We are pretty happy with the result.

Material :

Print all the parts at https://www.thingiverse.com/thing:5466276

Print 8 electrode receptacles and 2 frame adaptors. All other STL need a single print.

You will need in addition : 

-thick nylon fishing line (I used 50 lbs)

-15 mm long springs 3mm OD x12

-5 mm long springs 3mm OD x8 (cut 10mm springs in half to get 5mm springs if you can't find any)

-10 to 20 mm long 10mm OD spring x1 

I made a tutorial video for the assembly :

In the next chapter, we will share the PCBs and electronics instruction.

Hello everyone !

First of all we would like to apologize for being away for quite some time now. Both Marius and I are quite busy with work, but we had a discussion a few days ago and we are resolved to release everything you need to build your own armband within a few weeks or months.

I believe we have been wasting some time trying to make the design more slick and compact, as there was still some plan to make a product out of it. However, now it is clear that what people want is something more DIY. We have been in contact with several research labs, which currently have very limited options for sEMG, as commercial system are either very expensive, or simply not available, and they would really benefit from a DIY sEMG armband. I'm sure the process of building the armband might be appealing in itself to many of you.

So we will make a few adjustments on the design so that it can be assembled by anyone with minimal engineering skills, without expensive equipment and over the span of a week end or so.

Files and instructions coming soon !

Renaud

After several iterations we arrived at this fully integrated design, based on the tiny FPGA BX.