EEG not detecting, Bitalino EEG with STM Nucleo

depprusselldepprussell USA
edited July 2018 in Other Platforms
Hi,

I am building a device to detect EEG signals using the Bitalino EEG 151015. I use a STMicroelectronics Nucleo L432KC as a microcontroller. Now I added the EEG Sensor and I get really strange values (see Graph attached to this topic).  When I provide a constant voltage of 3.3V to the same Input I get the Graph that I expected (continous signal at the maximal sample value) so I can exclude the ADC as a source of error. I am using reusable Electrodes (made by Bitalino) - new ones that were never used before.  I even exchanged the electrode lead cable to exclude that one. The sensor is powered with 3.3V (from the nucleo) and ground is connected to the nucleo ground as well.  I provided VCC/2 with a voltage divider (by using 2 100kOhm resistors between ground-vcc/2 and 3.3V-vcc/2). Can you please help me on this?

Please help. 

I didn't find the right solution from the Internet. 

References:- 

Thanks!
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