# Ground Control message continually toggles from "Connected" to "Not Connected" **URL:** \ **Category:** Software\ **Created:** [November 19, 2017, 9:04am UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129 "2017-11-19T09:04:00Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![jberd](https://avatars.discourse-cdn.com/v4/letter/j/bc8723/32.png) [@jberd](https://forums.maslowcnc.com/u/jberd)\ **Post date:** [November 19, 2017, 9:04am UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/1 "2017-11-19T09:04:00Z")
I am relatively new to this. I cannot test the motors, I believe, due to this. Anybody have the same issue? ---
**Author:** ![Gero](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/gero/32/17487_2.png) [@Gero](https://forums.maslowcnc.com/u/Gero)\ **Post date:** [November 19, 2017, 2:16pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/2 "2017-11-19T14:16:51Z")
Welcome. Yes, I had this but on Linux with an outdated pyserial module long time back. It would help if you could post your operating system and the versions of GroundControl and Firmware you are using. Did you close the Arduino IDE before starting GroudControl? Did the Firmware upload go well? Edit1: One more test please. In the Aduino IDE, after the upload, kindly click on the ‘Magnifying Glas’ (top Right) to open the serial monitor. With a baud rate set to 57600, do you see something like: \ [PE:0.00,0.00,127] \ [PE:0.00,0.00,127] \ [PE:0.00,0.00,127] \ ? Ignore my numbers here, they might be different, the question is, if that output runs continuously through without loss of connection. ---
**Author:** ![MeticulousMaynard](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/meticulousmaynard/32/2744_2.png) [@MeticulousMaynard](https://forums.maslowcnc.com/u/MeticulousMaynard)\ **Post date:** [November 19, 2017, 3:41pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/3 "2017-11-19T15:41:20Z")
I also experienced this when I was first getting my Maslow set up. I was able to fix it by re-uploading the firmware to the Arduino. Not sure if the code didn’t compile right the first time, or if it was something else. ---
**Author:** ![Tim\_Thompson](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/tim_thompson/32/20780_2.png) [@Tim\_Thompson](https://forums.maslowcnc.com/u/Tim_Thompson)\ **Post date:** [November 19, 2017, 7:02pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/4 "2017-11-19T19:02:53Z")
what are you using to interface to the Arduino? Raspberry Pi, laptop, or what? If it is the Raspberry Pi - type this in on the command line: `sudo pip install --upgrade pyserial` ---
**Author:** ![EricK](https://avatars.discourse-cdn.com/v4/letter/e/bbce88/32.png) [@EricK](https://forums.maslowcnc.com/u/EricK)\ **Post date:** [November 20, 2017, 3:43am UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/5 "2017-11-20T03:43:40Z")
As “jberd” I am also new to this and also having the same issue. I am running Windows 10 off a laptop. I have re-installed both Arduino IDE and the latest Maslow Firmware a couple of times and still continue to get “Connection Lost” "Connection Timed Out. Any help would be greatly appreciated. Thanks. ---
**Author:** ![blurfl](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/blurfl/32/9_2.png) [@blurfl](https://forums.maslowcnc.com/u/blurfl)\ **Post date:** [November 20, 2017, 3:55am UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/6 "2017-11-20T03:55:18Z")
Those messages indicate that although the serial port selected in GroundControl is alive, the data coming from that port is not the expected data. You can troubleshoot this in the Arduino program after you’ve uploaded the program to the Mega2560. After you see ‘done uploading’, open athe Serial Monitor from the Tools menu. Make sure the baud rate is 57600. You should see something like: ready ok Grbl v1.00 \ [PE:0.00,0.00,127] \ [PE:0.00,0.00,127] \ [PE:0.00,0.00,127] \ [PE:0.00,0.00,127] \ That’s what GroundControl expects to see. ---
**Author:** ![jberd](https://avatars.discourse-cdn.com/v4/letter/j/bc8723/32.png) [@jberd](https://forums.maslowcnc.com/u/jberd)\ **Post date:** [January 2, 2018, 11:00pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/7 "2018-01-02T23:00:48Z")
Hi, I changed the baud rate to 57600 in Tools-Serial Monitor. GroundControl still gives me Connected on port COM11…Connection Timed Out… I am running GroundControl V 1.0 on Windows 7 Home Premium on a HP pavilion g6 Notebook PC…64-bit Operating System. Has anybody else experienced this and passed this point? ---
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [January 2, 2018, 11:12pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/8 "2018-01-02T23:12:45Z")
Usually this issue means that the firmware either did not upload to the Arduino successfully or that COM11 is actually some other device. Did it seem like the firmware uploaded OK and that the Arduino was COM11 when uploading the firmware? ---
**Author:** ![Bee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bee/32/2160_2.png) [@Bee](https://forums.maslowcnc.com/u/Bee)\ **Post date:** [January 2, 2018, 11:57pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/9 "2018-01-02T23:57:38Z")
OK let’s try this. When you have a failure. Do not change anything. Close Ground Control open the Arduino IDE and attempt to upload the blink sketch under file-\> examples. Tell me if this works or fails. If it works re-load the Maslow firmware. Please report back. Thank you ---
**Author:** ![jberd](https://avatars.discourse-cdn.com/v4/letter/j/bc8723/32.png) [@jberd](https://forums.maslowcnc.com/u/jberd)\ **Post date:** [January 3, 2018, 12:26am UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/10 "2018-01-03T00:26:12Z")
I am good now. I uploaded the new firmware…opened GroundControl…testing of the motors went well. Thank you so much. I will continue with the posted instructions. ---
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [January 3, 2018, 12:53am UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/11 "2018-01-03T00:53:28Z")
Thanks for the update! It always feels good to help 😀 ---
**Author:** ![mcmiley](https://avatars.discourse-cdn.com/v4/letter/m/91b2a8/32.png) [@mcmiley](https://forums.maslowcnc.com/u/mcmiley)\ **Post date:** [February 22, 2018, 8:54pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/12 "2018-02-22T20:54:45Z")
Okay, my Maslow has under gone a rebuild, and I’m firing her up again, but have the problem detailed in the thread title. All the connections are the same as before, when she worked, except I have z-axis plugged in. It’s repeating the ‘Connected’ / ‘Connection timeout’ about every five seconds. (All latest versions). Any suggestions? Cheers. ---
**Author:** ![blurfl](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/blurfl/32/9_2.png) [@blurfl](https://forums.maslowcnc.com/u/blurfl)\ **Post date:** [February 22, 2018, 9:03pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/13 "2018-02-22T21:03:11Z")
If the USB plug is in a different socket, the port name might be different. Do you see the Arduino in the port list of GroundControl? ---
**Author:** ![mcmiley](https://avatars.discourse-cdn.com/v4/letter/m/91b2a8/32.png) [@mcmiley](https://forums.maslowcnc.com/u/mcmiley)\ **Post date:** [February 22, 2018, 9:58pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/14 "2018-02-22T21:58:56Z")
Dunno, weirded me out! I’ve been around in circles. Third install from firmware up and, it’s working. I blame my lappie! ---
**Author:** ![garru2](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/garru2/32/22819_2.png) [@garru2](https://forums.maslowcnc.com/u/garru2)\ **Post date:** [March 29, 2018, 8:20pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/15 "2018-03-29T20:20:22Z")
I’m also having the same problem where ground control continually toggles from connected to not connected I’m running win 10 (up graded from a win 7) gateway desktop dx4822 I also re-installed a couple of times. with newest firmware… I tried running it on a RCA win 10 tablet and still same problem very frustrating!! an FYI the board came with 3 or 4 pins bent which I fixed and the board that I received was a mega 2560 R3 don’t know if that matters or not… someone please help thanks ---
**Author:** ![Bee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bee/32/2160_2.png) [@Bee](https://forums.maslowcnc.com/u/Bee)\ **Post date:** [March 29, 2018, 8:30pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/16 "2018-03-29T20:30:23Z")
Make sure anything that could access the port is closed - like the Arduino IDE. Also if you ave another USB cable to try. If you close Ground control and Open the Arduino IDE - Load a program from examples that outputs to the terminal and open the terminal. I’m looking for an example and will up date this in a few minutes See if it disconnects Thank you ---
**Author:** ![garru2](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/garru2/32/22819_2.png) [@garru2](https://forums.maslowcnc.com/u/garru2)\ **Post date:** [March 29, 2018, 8:34pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/17 "2018-03-29T20:34:56Z")
> [@Bee](#): > > Load a program from examples that outputs to the terminal and open the terminal. thanks @Bee, but I don’t know what that means, I’m totally new to this. ---
**Author:** ![Bee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bee/32/2160_2.png) [@Bee](https://forums.maslowcnc.com/u/Bee)\ **Post date:** [March 29, 2018, 8:52pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/18 "2018-03-29T20:52:52Z")
No problem - I will explain but need a little time to set it up. Thank you ---
**Author:** ![blurfl](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/blurfl/32/9_2.png) [@blurfl](https://forums.maslowcnc.com/u/blurfl)\ **Post date:** [March 29, 2018, 8:55pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/19 "2018-03-29T20:55:55Z")
The ‘connected…not connected’ symptom is a showstopper for sure. The 'mega 2560 R3 ’ is the right version/model of Arduino board, it’s the one we all got with our kits. The first thing to ask is - have you been through [these steps](https://github.com/MaslowCNC/Firmware/wiki/Firmware-Setup)? If you have, and got the happy ‘Done uploading.’ message, then there might be an issue with the USB connection from the computer. Do you have a different USB port, or a USB hub you could use to connect to the Arduino? Keep asking the questions, we want to get you cutting! ---
**Author:** ![garru2](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/garru2/32/22819_2.png) [@garru2](https://forums.maslowcnc.com/u/garru2)\ **Post date:** [March 29, 2018, 9:10pm UTC](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129/20 "2018-03-29T21:10:42Z")
> [@blurfl](#): > > The first thing to ask is - have you been through these steps? If you have, and got the happy ‘Done uploading. I opened the firmware by selecting cnc\_ctrl\_v1., there was no “ino” extension only cnc\_ctrl\_v1 and clicked that and received the done loading. [Next page](https://forums.maslowcnc.com/t/ground-control-message-continually-toggles-from-connected-to-not-connected/1129.md?page=2)