I can not use the grbl controller

[atakanzey]

I upload the codes correctly. But I can not send the G code because there is no connection the grbl controller (3.5.1) and arduino. How I can fix it. If I use another software to connect arduino for sending G code. Please help me Thank you.

[robottini]

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

[atakanzey]

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...

[robin-gdwl]

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.

[maneshian]

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

[LonghornHDTV]

Did do you use GRBL v0.9?

[Rafeeu]

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

[mrtwizta]

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?

[jtmunson]

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.

[Legeriana48]

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

[phuong140587]

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

[robin-gdwl]

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 ?

[phuong140587]

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,

[PABXStu]

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

[mrtwizta]

Pleasure

…

On Sat, 14 Nov 2020, 19:05 PABXStu, ***@***.***> wrote: Brilliant, Thank You - set baud rate to 115200 connected straight away. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#4 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AECHAJVOOI3FNRJD7NN4QRLSP22GXANCNFSM4CBUTLWQ> .

[ueline]

@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.

[shivmahesh]

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

[robottini]

I don't understand why you write here this problem. This Is the 0.9j version with the RC servo motor support. Il mar 12 ott 2021, 15:41 shivmahesh ***@***.***> ha scritto:

…

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 — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#4 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADENDUYQDIKFC7XKA5DDWE3UGQ3IVANCNFSM4CBUTLWQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.