Cyton connected but no data stream
Hi all,
The dongle and cyton are successfully connected -> session started successfully -> but when I click the start streaming button nothing changes. I have used the same dongle to stream data from another cyton board and it works. The batteries are new.
I have been plugging in the dongle, and then powering the board on as required. The blue led is on for both the dongle and the cyton.
When I check the gui to show packets, the expected packets is zero.
Pairing Success
Session started
Streaming started
No packets
Picture of board and dongle
Comments
Glo, hi.
This implies that both Cyton's and dongles are set to the same radio channel. Can cause confusion if you ever try using both Cyton's at the same time. May or may not be related to the issue you are seeing. When did you purchase these?
A first thing to try is the AUTOSCAN feature with the broken Cyton and dongle. Be sure the working Cyton and it's dongle are turned off / unplugged. Expand section 5 with the arrow.
https://docs.openbci.com/GettingStarted/Boards/CytonGS/#5-optional-settings
William
Hi William,
Thanks, yup so I make sure that the working cyton and dongle were both turned off, and I also did try Autoscan (see first image in original post) it says that the "cyton and dongle are paired" and "cyton successfully connected to COM6" and the session starts successfully, but I still see no signal.
The not working cyton/dongle was purchased in (2021).
Thanks,
Does the 'Change channel' button work? (Pick a different channel than your other Cyton. 'System Status' should show the current channel.) If channel changing works, it means the two RFduinos (dongle and mainboard) are functional. If that is the case, it's possible your mainboard PIC32 firmware glitched. You can try reloading here:
https://docs.openbci.com/Cyton/CytonProgram/
Use adhesive tape label to put the new channel numbers on each pair of dongle+Cyton, to avoid any future mixups.
Hi William,
The change channels does work. The gui froze the first time so I restarted the gui, but I saw from system status channel was changed. Just in case, I changed channels again and it didn't freeze this time and the channel changed successfully according to system status.
So then I reloaded the firmware just now. The first time I got the "program flash failed" and the main board LED kept flashing.
So I moved the board closer and the tried again. This time the flash said "done", but I got the "read page failed" error in the verify step. The main board LED did stop flashing though so as this is an expected error I tried the gui again. Still no data stream.
Will do with the tape label.
Thanks!
Um, wait, can you point to where the instructions say that " 'read page failed' in the verify step" is acceptable? Are you sure you have a valid upload?
In the link that you sent https://docs.openbci.com/Cyton/CytonProgram/
-> "Note: occasionally, you may see the error message in the screenshot below. You can ignore this. As long as Program flash: ...................................#################################### done appears, 99 out of 100 times your firmware uploaded correctly. If your board doesn't appear to be working in the GUI (or other software), simply try re-uploading the firmware."
I get the same screenshot as under that note^ and I'm hoping that this means I have a valid upload. Otherwise I've tried reuploading several times and I just get this same message. Is there something else I can try to see if I have a valid upload?
Hmm, it does say that this "read page failed" occurs only 'occasionally', not every time. But you are seeing it every time.
It does sound like something on the board has failed solidly and reflash is not helping. Have you tried emailing contact at openbci.com ? I'm unclear on the warranty period, when was this board purchased in 2021? How long did it function correctly before the failure? You might be aware that static discharges (if contacting board traces) can sometimes glitch components. The input pins are static protected, but not the exposed metal leads and traces on the board. Static discharge happens more typically in cold / dry environments. From the Cyton shop page:
William
okay thank you I will try that