Firmware Error 20

General
#1

first time here
can't connect octoprint to printer Longer LK4, tried updating firmware. can't find what this error 20 is. octoprint says the error is from the printer's firmware.

Send: N0 M110 N0125
Recv:
Recv: Grbl 1.1f ['$' for help]
No answer from the printer within the connection timeout, trying another hello
Send: N0 M110 N0125
Recv: error:20
There was a timeout while trying to connect to the printer
Changing monitoring state from "Connecting" to "Offline"
Connection closed, closing down monitor

first time it happened i ignored the warning and it connected but since then it just won't connect even when i change the settings.

some help appreciated

#2

Looks like maybe your printer is running on GRBL and not Marlin. GRBL will take GCode but I am pretty sure that Octoprint is expecting a Marlin based Firmware only at the printer end.

Does your printer work like it is meant to without using Octoprint? Did you mistakenly update your printers firmware with a GRBL firmware?

1 Like
#3

i downloaded the firmware from maker's website directly. followed their instructions shouldn't be grbl that i know, i'll recheck. seems to work without octoprint, already printed something, just wanted to have it work with octoprint.