Cannot connect to the printer

QuestionsCategory: Printing and calibrationCannot connect to the printer
Greg asked 9 months ago

Hi, I’m trying to build m prime one on my own, but have some problems with connecting to the printer. While trying to connect, i’m getting the following error log Send:
Send: M105
Trying baudrate: 38400
Send: M105
Baudrate test retry: 4
Send: M105
Baudrate test retry: 3
Send: M105
Baudrate test retry: 2
Send: M105
Baudrate test retry: 1
Send: M105
Baudrate test retry: 0
Send: M105
Trying baudrate: 19200
Send: M105
Baudrate test retry: 4
Send: M105
Baudrate test retry: 3
Send: M105
Baudrate test retry: 2
Send: M105
Baudrate test retry: 1
Send: M105
Baudrate test retry: 0
Send: M105
Trying baudrate: 9600
Send: M105
Changing monitoring state from ‘Detecting baudrate’ to ‘Closed’
Changing monitoring state from ‘Closed’ to ‘Error: No more baudrates to test, and no s…’
Connection closed, closing down monitor
Searching for answer in google wasn’t very helpful in my case. Do you have any clue what can be wrong? I was trying to connect with mac os x 10.11 and ubuntu 15.10

1 Answers
diegotrap Staff answered 9 months ago

Greg,
The messages that you are getting aren’t from the printer, but from the program that you are using to connect to the printer. It is trying different baudrates (the connection “speed”) to establish a connection with the printer, until it finds the correct setting.
Disable the baudrate discovery mode (probably something called “Baudrate: AUTO” or similar) and set it to the correct setting for your printer. If you have uploaded the default firmware to your M Prime One, baudrate is 250000.
If you are uploading your own firmware version of Marlin, check the line that looks like this one:

#define BAUDRATE 250000

Check your BAUDRATE value and insert it in the program that you are trying to use to connect to your printer.