I can not use the grbl controller about grbl-servo HOT 17 OPEN

had the same problem, figured it out after hours of trying and almost giving up... made an account to show others what to do:
set the BAUD rate to 115200 in the software when connecting to the arduino with universal gcode sender or grbl-controller. mine was set to 9600 wich was the problem.

from grbl-servo.

Brilliant, Thank You - set baud rate to 115200 connected straight away.

from grbl-servo.

There are many sw for the connection between PC and Arduino. You can use the sw you prefer. The GRBL controller is only the sw I use, but it is not mandatory

from grbl-servo.

OK. But I want use the GRBL controller 3.5.1. When I select the COM 3 Port in the GRBL controller , it says me "No data from COM port after connection.Expecting Grbl version string." How I can fix that problem ? thank you...

from grbl-servo.

I do have the same problem. Tried so many things, still not working!

from grbl-servo.

Did do you use GRBL v0.9?

from grbl-servo.

OK. But I want use the GRBL controller 3.5.1. When I select the COM 3 Port in the GRBL controller , it says me "No data from COM port after connection.Expecting Grbl version string." How I can fix that problem?
I use GRBL v0.9

from grbl-servo.

I have the same problem, tried the At mega 2560 and an MKS Gen2-Z (2560 chip)
"No data from COM port after connection.Expecting Grbl version string."
So I loaded A Marlin printer sketch i use for my 3Dprinter and it works fine, obviously till the heater hardware reports an error.
Just to confirm/prove the hardware and wiring is correct, i can move and home all axis without problems
so it seems the devs need to do some soul searching there?

from grbl-servo.

Having the Correct Com# is essential/ Once set, for reiteration thanks, Boundlessmaking, the baud rate of 115200 work for me. Default was 9600. But 115200 works.

from grbl-servo.

(Ctrl X)
No data from COM port after connection.Expecting Grbl version string
... not run?

from grbl-servo.

Can I help me? No data from COM port after connection.Expecting Grbl version string
arduino 1.8.12; GRBL servo master,

from grbl-servo.

Can I help me? No data from COM port after connection.Expecting Grbl version string
arduino 1.8.12; GRBL servo master,

@phuong140587

have you set the correct com port?
did you change the baud rate ?

from grbl-servo.

upload complete,


I used arduino Portable 1.8.12 before to upload normally. then I switched to use arduino 1.8.12 installer version, this error occurred. baurd rate: 115200, com5. In the port monitor there is no GRBL response: 0.9 [i.
I loaded another code to re-test the x, y, and servomotor motors still ran normally
I do not speak English well,

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@phuong140587
I have the same problem, did you manage to solve this issue?
I do not get any respond from the serial monitor.
I have the following equipment:

• Arduino Mega 2560 R3
• CNC Shield with 2x A4988 Stepper Motor Driver
  May I need to change something in the config.h file?

Thank you so much in advanced.

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grbl controllar error message: no data from com port after connect,expecting grbl version string.am using controllar 3.6.1 and grbl version 1.1

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