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.

The CAD files of the band can be found on Thingiverse:

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

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)