Brain Got Beats -- Not Yet

krupalmistry · December 2016

I have seen the excellent post of ASSR in EEGHacker from Chip (Brain Got Beats -- Not Yet). Excellent work from Chip. I want to know how can I transfer the data serially to the Arduino board? I wan to do this experiment in real time. Can anyone guide me on this?

Thank you

-Krupal

wjcroft · December 2016

Krupal, hi.

You would likely find replicating Chip's ideas easier on a laptop than a microcontroller. But there are usb host shields.

http://openbci.com/forum/index.php?p=/discussion/270/connect-dongle-to-uc-via-usb-host-mode

William

PS I think you're also aware that Chip didn't get the results he anticipated. You may want to do a literature search.

https://www.google.com/search?q=eeg+assr

krupalmistry · December 2016

Thank you wjcroft for the response. I want to do some experiment in real time like LED glow on Arduino board using ASSR. I am using using openBCI 32 bit board. I have used the python code which was given by Chip in ASSR blog (Brain got beats - Not yet). Could you please guide ?

Thank you

krupalmistry · December 2016

I have a weak peak for one of the beat frequency because I am using more electrodes.

Thank you

wjcroft · December 2016

You could try sending a private message to Chip @chipaudette by clicking on his name here. Then pressing the Message button. I still suggest using the laptop, will be much easier. You can do realtime feedback in Python or other languages. Another angle is to use a VPL such as neuromore.

krupalmistry · December 2016

Thank you William. I am trying to do real time feedback using hardware (openBCI 32 bit board and Arduino UNO board). I want to control something on Arduino board using ASSR paradigm like what Chip did in Hexbug blog. I am trying transfer data from openBCI 32 bit board to Arduino UNO board in Python. So could you please guide?

wjcroft · December 2016

You CAN control LEDs and such on an Arduino, WITHOUT having to run the EEG signal processing on the Arduino. Simply have a sketch loaded in the Arduino that accepts serial COM port 'commands' to adjust whatever you want. For example the command could be a letter followed by three digits of value.

L100
V200

Would set the LED intensity to '100'. And speaker volume to '200'. Use whatever scale you want. So your laptop would use two serial COM ports. One for the OpenBCI dongle, and one for your Arduino.

krupalmistry · December 2016

Thank you William for the response.

krupalmistry · December 2016

Hi William. But I want to implement the Brain Got beat in real time. For that I need to transfer data to Arduino board. Please guide on this.

Thank you.

krupalmistry · December 2016

I have a weak peak for the 38 Hz and 43 Hz in my spectrum and I want to make some task using this peak on Arduino board. Could you please guide on this.

Thank you

wjcroft · December 2016

"For that I need to transfer data to Arduino board."

No you don't. You can do your real time signal processing on the laptop, and then send "control commands" to the arduino on it's own COM port. That's what I explained above with the L100 V200 example. Your Arduino would just be used as a "feedback display controller". All the other work would happen on the laptop.

If you indeed want to do all the processing on the arduino, then you're probably multiplying your time and energy by several times. Not to mention that arduino has way less processing power than your laptop. If you want to do the arduino signal processing, then you need to purchase the usb host shield I mentioned several posts back. That is how you will be able to plug the dongle into the arduino. Good luck.

krupalmistry · December 2016

Thank you William. So how to interface between 32 bit OpenBCI board and Arduino board ? Sorry, I am novice so having many doubts.

Thank you

wjcroft · December 2016

This is the THIRD time I've mentioned this. If you want your Arduino to receive data from OpenBCI, get a usb host shield for the Arduino. Then you can plug in the dongle to the Arduino.

https://www.google.com/search?q=arduino+usb+host+shield

Better yet, get a Raspberry Pi, which already comes with USB host socket.

Are you aware that Python (running on the laptop) can do real time DSP processing from the OpenBCI data stream?

http://docs.openbci.com/OpenBCI Software/06-labstreaminglayer

krupalmistry · December 2016

Yes. I am aware of this. Thank you William. I got the concept. Sorry for making you repeat. I will try this and share my comments on this.

krupalmistry · December 2016

Does anyone try the similar kind of real time processing in Python so that I can follow and understand?

Thank you.

wjcroft · December 2016

These look promising,

https://www.google.com/search?q=realtime+dsp+in+python

https://github.com/sccn/labstreaminglayer/blob/master/LSL/liblsl-Python/examples/PerformanceTest.py

Still in beta,

https://www.neuropype.io

krupalmistry · December 2016

Thank you so much wjcroft.

wjcroft · December 2016

Also,

https://www.google.com/search?q=realtime+eeg+in+python

http://stackoverflow.com/questions/32303045/what-is-most-efficient-python-ipc-mechanism-for-plotting-real-time-serial-data

http://www.ouunpo.com/eegsynth/?page_id=514

krupalmistry · December 2016

I am definitely going to view above links. As a novice can you guide me how to start with real time EEG processing like is there any tutorials or videos?

Thank you

wjcroft · December 2016

I would take a close look at the EEGsynth Github, as they are using OpenBCI directly in Python.

https://github.com/eegsynth/eegsynth

krupalmistry · December 2016

Ok. So I am going to follow the links mentioned above and update the progress. Thank you so much for the guidance.

krupalmistry · January 2017

I am doing real time processing in the laptop and sending commands to Arduino as you said. I have gone through the above mentioned links which are really useful for real time processing in python. Thank you. Do you have any other suggestions for real time processing in the laptop ?

Thank you

wjcroft · January 2017

http://openbci.com/forum/index.php?p=/discussion/861/python-interface-wyrm-mushu-mne

krupalmistry · January 2017

Thank you wjcroft.

Brain Got Beats -- Not Yet

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