First of all we'd like to thank you for considering BITalino as a candidate platform. For a 5x EMG + 1x ECG configuration, we believe that the best options would be either the BITalino Core (+ battery, sensors and cables) or the BITalino Plugged Kit (+ additional sensors and cables).
It is important to highlight that the reference / ground electrode is common to all of the sensors, reason for which you only need 3 electrode leads on one of the sensors and the others can use only 2 electrode leads. Please see the following options:[BITalino Core]
The hardware base would require these components:
1x https://store.plux.info/bitalino-compon ... 21705.html
1x https://store.plux.info/batteries/203-5 ... 23102.html
To keep the costs lower you may want to consider soldering the cables (electrode and connection to the core) directly to the sensor boards, for which you would need these parts:
5x https://store.plux.info/bitalino-sensor ... ctors-none
1x https://store.plux.info/bitalino-sensor ... ctors-none
6x https://store.plux.info/cables/229-open ... cable.html
3x (for the ECG) https://store.plux.info/cables/228-1-le ... ctors-none
10x (for the EMG) https://store.plux.info/cables/228-1-le ... ngth-10_cm[BITalino Plugged]
The base hardware already includes a few sensors, cables and accessories as seen here:
1x https://store.plux.info/kits/35-bitalin ... 21003.html
In addition you would need:
4x https://store.plux.info/bitalino-sensor ... tors-uc_e6
4x https://store.plux.info/cables/227-2-le ... cable.html
The setup that we've tested and is known to work with the Raspberry Pi is the Bluetooth version. The BLE should work as well (not tested) but currently we don't have ready-made APIs for that, which means you would have to implement the low-level communication protocol and BLE service layer yourself.
Regarding the cable length, an overall 2.5 feet length is not a problem. Nevertheless, for optimal performance (in terms of noise) you're advised to keep the electrode cables as short as possible and vary the cable length on the connection between the sensor and the MCU.
The BITalino Team