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So I upgrade OctopPrint to 1.3.5 and now when OctoPrint is trying to connect it hangs, also it seems that the printer is returning garbage. Has anyone seen this? I can control the printer just fine through the LED screen, so I am not really sure what is going on here. Thanks.

Connecting to: /dev/ttyACM0
Changing monitoring state from 'Offline' to 'Opening serial port'
Connected to: Serial<id=0x6d3b2270, open=True>(port='/dev/ttyACM0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=10.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Starting baud rate detection
Changing monitoring state from 'Opening serial port' to 'Detecting baudrate'
Trying baudrate: 115200
Send: N0 M110 N0*125
Recv: �n�\x16��\x7f;}\x03]�k�^�>6
6q
Recv: \x15�J�I�JHJ�
Recv: j�\x1f�?��\x1f�
Recv: j��\x1f��j��\x1f��j�\x1f����\x1f��:�M\x0f\x02��l\x7fa^!hHHJ�j\x08N��a�*��\x7f\x04�/�_]�:XI\x03Ha�{\x0e\x16\x7fV~�\x0eHgH\x0f�H6\x13�\x0c'Ho�HV\x13�\x0c'Ho�HV\x13�;�6J�
Recv: _S�;�V
Recv: �\x08_\x13�\x0c'Ho�hV\x13�,'H/�h\x16\x13HH'Ho�HV\x13hHgH\x0f�h6\x13�\x0cgH\x0f�H6\x13�\x0c'Ho�HV\x13��~\x16J�
Recv: _\x13�,\x07H/�h\x16S��^V
Recv: \x03\x0c_\x13�\x0c'Ho�HV\x13�,'H/�h\x16\x13��~\x16J\x03\x08_\x13�,\x07H/�h\x16SH�>V
Recv: \x03\x08_\x13\x08HgH\x0f�h6\x13h�~6jC
Recv: _\x13HH\x07H/�h\x16S��>\x16
Recv: \x03\x08_\x13�\x0c'H/�h\x16\x13\x08�^Vj\x03\x08\x1f\x13hH\x07H/�h6S��~\x16J\x03

The baud rate should be 250000.

g.

Thanks for posting the baud rate! Older version of octoprint would detect the baud rate on its own. Explicitly setting the 250000 value fixed my connections issue.

Thanks again.

You're welcome!

g.