This is the PCBA files for the band found in Deep learning and session-specific rapid recalibration for dynamic hand gesture recognition from EMG (full paper), it is a derivative of OpenBCI's Cyton design miniaturized to a smaller formfactor. Note that the performance of this device has not been characterized. A comb filter (50/60 Hz and its harmonics) is highly recommended.
The SWDIO and SWDCLK ports are exposed via a 4-pin FPC connector, which can be connected to a J-Link device using the included adapter.