everything to normal. But even with the external trigger firmware loaded, the GUI should still operate. Mysterious. Here's a thread all about uploading tips.

I am a little confused about the PC / BLE switch. Do you mean I can upload external_trigger firmware while openbci switching to BLE? I basically followed external trigger tutorial and It could be uplo

I mean, that button remains high as long as it is pressed and inserts a trigger in the data stream. So if we use it to turn on the board without any PC or dongle, will it remain long only when the but

If you want a separate software to send the trigger, then you will need to have that software control the serial port. Only one software can control the serial port at one time.

@qwer1304The serial port is a bi-directional UART. The software running on the PC can send a serial byte at any time. The way the radios work, the PC side can only send the serial byte after it receiv

@biomurph To send the trigger to OpenBCI you need to grab the serial. But the serial is used for sending EEG samples to host. How do you split the ownership of the serial at the host side? I.e., sendi

@qwer1304, that is great and might help others who want to correlate from external triggering sources. Please consider posting your firmware mods / code on Github or doing a short writeup on the Commu

For that, you need a source that outputs a trigger. I use WAV Trigger, connected PLO output to OpenBCI through an optoisolator and modified the FW to include readings thereof in an Aux channel.

It could be possible to connect via one of the ADC pins on the PIC. That way a trigger could 'send' a variety of voltage levels that would be decoded on the board. Integrating an external, isolated sy

It may be possible to use the eye blink artifact to trigger your 'off' signal.Is there enough of an EMG artifact from frontal lobe electrodes to do that?

Tutorial is fine, if you need just one trigger. In most cases in ERP studies you need at least two different markers (oddball paradigm) or even more. I´m just making ERP research, where I need four ma

a voluntary muscle contraction could be used to trigger each letter. The user would look at the key, then contract. Then the SSVEP would commence to recognize that letter. Pretty simple and similar t

The Diagram 3 – SPI interface1 takes slightly different approach. It removes UART to LVDS translator at the sensor head side (ATmega or PIC serves this function at the moment). Since FTDI as a standar

Hey folks , I would like to ask if  is there an arduino code with the external trigger implemented on the 8-bit board?. There exist a code for 32-bit board here https://github.com/OpenBCI/OpenBCI_Butt

OpenBCI and a set of electrodes looks to be the best bet, but I am struggling to pull the trigger on a new 8ch/32bit with the Ganglion so close and 1/5 the price. 8 channels is a luxury, 4 is enough f

On the other hand, if you just want a simple translation of bicep, tricep activity to move motors, that's totally doable. But again, it's best to start working with software like the OpenBCI GUI to de

Using VRPN or LSL on some other protocol to trigger external events, it's possible to use OpenViBE only for the data acquisition / signal processing / machine learning part. Actually, one of the P300

Joel @biomurph has reproduced this behavior in the lab, and I believe is investigating. But last I heard it was taking a long running data stream of between 3 to 4 hours to trigger the freeze under Ma

Currently, it is not a problem in my experimental paradigm, it is trial-based and I already need to pad some time at the beginning of each trial to give the subject time to trigger the required state

The command to start the stream in not "start" but... "/start". One slash that could change everything, because otherwise the "s-t-a-r-t" command is sent to the board (an