The data coming from the FMG sensor and the EMG sensors are used to estimate the pose of the arm. When the elbow is flexed this causes a resistance change of the FMG sensor. When the wrist is flexed this results in an emg signal. Both are measured and transmitted to the PC which displays the estimated pose.
A paper has been published about the 3D printed EMG electrodes:
Wolterink, G.; Dias, P.; Sanders, R.G.P.; Muijzer, F.; Beijnum, B.-J.v.; Veltink, P.; Krijnen, G. Development of Soft sEMG Sensing Structures Using 3D-Printing Technologies. Sensors 2020, 20, 4292. https://doi.org/10.3390/s20154292
The CAD files of the band can be found on Thingiverse: https://www.thingiverse.com/thing:2699263
To refer to the source code for raspberry pi zero, the amplifier design and matlab code to plot the result please use:
M., Schouten, G. Wolterink, E. Pérez, R. Sanders and G. Krijnen, (2021). raspberry-bioamplifier https://doi.org/10.5281/zenodo.5750012
The project is created by: Eric Perez, Martijn Schouten, Gerjan Wolterink and has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 688857 (SoftPro)