ronanb96 / low-cost-eeg-based-bci Goto Github PK

Fascinating project. Trying to recreate your circuit. What chip are you using for the EEG?

Thank you,

Even after copying and pasting whats in the lib the LTspice gave "Can't find the model "BZX84C3V6L" "

As I understand it, the input value '/dev/ttyUSB0' pertaining to the USB-TTL device is specific for LINUX distributions, which would be the value in case for a WINDOWS distribution?

I'm having problems with eegScope.py. Running it with a test signal from a function generator, the correct frequency and waveform is shown. The scroll rate of the raw signal is however only half the speed of the expected. i.e. when 2 seconds have elapsed, the graph has only scrolled 1 second (going by the markings on the graph). This results in the data on the screen being delayed compared to the current signal, with this delay accumulating over time. The FFT plot follows the raw data, i.e. it's also delayed.

I've tried changing 'Fs' in the and other parameters in the Python program, but it either doesn't help or breaks the code. I've also tried with different sample rates on the microcontroller. I've verified that the microcontroller sends data at the correct rate and that the packets are up-to-date.

Thinking it could be a problem with precessing time, I also tried removing the FFT plot and all the FFT calculations, but the result was the same.