Let's talk Octoprint

Check here for instructions and tips on how to operate your printer.

Re: Let's talk Octoprint

Postby jmckeone » Tue Aug 30, 2016 9:10 am

Not yet, I was using the supplied USB cable that came with the Gmax. I researched and read that a lot of people were having similar problems until the upgraded to a powered USB hub to supply the RPi and printer power. Sometimes the power supply's that you get for the RPi arent enough and will drop the connection. I just purchased a Belkin USB powered hub which is on the compatibility list, ill try that along with a new USB cable and report back. Hopefully its just something that simple.
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Re: Let's talk Octoprint

Postby nopick » Tue Aug 30, 2016 10:50 pm

Good luck. For what it's worth, I have not had to use a powered hub on any of the 5 octoprint servers I have running on raspberry pi hardware. One pi is a B+, three are Pi2 Bs and one is a Pi3 B.
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Re: Let's talk Octoprint

Postby mosaicman » Fri Sep 01, 2017 3:42 pm

jmckeone, I am experiencing similar issues with my octopi and gMax 1.5+ losing connection a few hours into the print. Did you ever resolve this? If so, what was the fix?

Thanks!
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Re: Let's talk Octoprint

Postby mosaicman » Tue Sep 05, 2017 8:43 am

Digging more into this, I think it may be a power issue. I do not think the usb power cable that I was using to power the pi could handle 2A. Will be changing this out and retesting. Will re-post if this was the fix.
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Re: Let's talk Octoprint

Postby mosaicman » Tue Sep 12, 2017 4:07 pm

So my Octopi is now working 100% with no connectivity issues. I re-flashed my SD card, changed the power supply cable ensuring it was 2A capable, and changed the usb port that connected the gMax to the Octopi to the printer. One of these three seemed to be the fix.
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Re: Let's talk Octoprint

Postby mosaicman » Wed Oct 18, 2017 6:34 pm

One last note, for best stability, I lowered the baud to 115200. This change was made in Octoprint and the firmware configuration.h file. Since this change I have never had any issue on either of my gMax printers. 115200 is plenty of speed for gcode commands.
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