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Just compiled a custom firmware for my Prusa i3 MK2S - printer. The original firmware uses a baudrate of 115200 to communicate with Octoprint, which means large gcode-files take FRICKING FOREVER to transfer to the SD-card from Octoprint. I wanted to speed this up, so I went and set the baudrate to 921600 and compared the speed against the original one: original firmware takes 2 minutes 44 seconds with the gcode test-file and my custom firmware takes 2 minutes 11 seconds.
Not exactly a huge win or anything and 2 minutes is still a lot, but..well, it did shave half a minute off, so I guess it's still an improvement.
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@LeventI find it's more reliable to upload the gcode to the SD-card. I've had multiple times the print go bad with Octoprint crashing or disconnecting or otherwise bugging mid-print, but if I use Octoprint to upload the code to the SD-card and just use Octoprint to monitor the printer and init the print, the printer will handle the actual printing from the card all on its own.
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- Levent and The_Vaccine
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