Eyeblink not detected / Update rate

[mandresve]

Hello.

An apology in advance if this isn't the right place to seek help. I'm testing the code and can get it working but can't detect the blink (Mindwave Mobile 2). Is there any way to fix it?

The other question is if I can receive data from the EEG sensor above 1Hz, where can I change this setting if possible? Thank you.

[faturita]

Hello,

If you are referring to the blinking value that came directly from the headset, it had never worked for me. It is always zero. Regardless of that, you can try to detect the blinkings by analyzing the raw data.

Regarding the second question, the sampling frequency is 128 Hz effectively, and the counter value goes from 0 to 99. I do not think you can change it in any way.

[mandresve]

Thank you Rodrigo.
I'll try to make it work on my own. As for the second question, the values on my terminal are updated every 1 second, even though the sampling frequency of the EEG headset is higher. Where do I change the refresh rate for the data I see on my terminal?

[faturita]

What may be happening is that the application working on your terminal is slower than the sampling frequency and you are missing some values. You can check this by verifying if the values that you get from counter are consecutive. They go from 0 to 99 and start it over again.