Cyton supports recording an external trigger channel. It has three 'Aux' channels in addition to the 8 ExG channels.

To measure velocities, you may need a precise trigger time. You might need different kit, as in the message above, for better accuracy.

All cables carrying electricity can 'interfere' with each other, by means of inductive or capacitive coupling. If your EEG cables are bundled with the trigger cable, or even near the trigger cable, su

In our recent experiment, we noticed that when Analog/Digital read is enabled, EEG channels were getting interfered by the external trigger signal. Any idea why is this happening and how to resolve th

I need two different sounds playing into each ear. That is why I am thinking of instead of using off-the-rack Bluetooth earphones, I will try and create Bluetooth earphones. Hence why I am talking abo

The reason I am skeptical about using Bluetooth earphones (obviously it will be most ideal) is that I need two different sounds playing into each ear. That is why I am thinking of instead of using off

I want the music to play wirelessly from my laptop to my earphones and that is why I want to make a subcircuit for the audio. If the EEG is in the desired frequency band then a 'trigger' will be sent

* We are also using external trigger for sync of two cytons, for which the logs seems to get recorded only in SD card logs.

No. The 'external trigger' approach will STILL not work. ALL CHANNELS need to sample at exactly the same moment in time. Otherwise many metrics such as phase, coherence, P300 sample averaging, etc., a

Thank you, William. Is there a computer scientist who wants to stream two OpenBCI boards into an InfluxDB, synchronize the boards by an external trigger, and write a paper about it? It could be to be

Very old thread, but I could not get any newer information. To have more than 16 channels would be great, the the “external trigger” idea is also great. What about streaming multiple OpenBCI boards in

The circuitry for triggering has been verified and no fault has been found. But still, the issue persists w.r.t the trigger logging.

Hi All,

Please read the actual link experiment setup and circuit diagram. TWO digital inputs trigger / timing inputs are used for the Cyton experiment. A photocell is recording the start time of each stimulus

Here's a link to a tutorial on how to add a trigger using the OpenBCI GUI. Let me know if that helps!

I am currently designing an EEG motor imagery experiment with real-time classification and need a trigger channel in my LSL stream. I need the trigger channel to know when to start collecting the data

.. you could possibly sacrifice one of your 4 channels as a trigger recording channel. Using the similar ideas from the above link.

As you state, doing the P300 signal averaging requires very accurate stimulus epoch alignment. The recommended approach on Cyton, is with the External Trigger method,

The different 'Board mode' trigger recording modes, replace the Accelerometer data normally stored in the three Aux channels.

I am using External trigger method to detect the button Press (D17, which is PROG Button).