I am relatively new to this. I cannot test the motors, I believe, due to this. Anybody have the same issue?
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 Yes, I had this but on Linux with an outdated pyserial module long time back.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 āMagnifying Glasā (top Right) to open the serial monitor. With a baud rate set to 57600, do you see something like:
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
[PE:0.00,0.00,127]
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
[PE:0.00,0.00,127]
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
[PE:0.00,0.00,127]
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
?
Ignore my numbers here, they might be different, the question is, if that output runs continuously through without loss of connection.
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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 didnāt compile right the first time, or if it was something else.
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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
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As ājberdā 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 āConnection Lostā "Connection Timed Out.
Any help would be greatly appreciated.
Thanks.
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 youāve uploaded the program to the Mega2560. After you see ādone uploadingā, 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
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
[PE:0.00,0.00,127]
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
[PE:0.00,0.00,127]
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
[PE:0.00,0.00,127]
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
[PE:0.00,0.00,127]
<Idle,MPos:0.00,0.00,0.00,WPos:0.000,0.000,0.000>
Thatās what GroundControl expects to see.
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Hi, I changed the baud rate to 57600 in Tools-Serial Monitor. GroundControl
still gives me Connected on port COM11ā¦Connection Timed Outā¦
I am running GroundControl V 1.0 on Windows 7 Home Premium on a HP pavilion
g6 Notebook PCā¦64-bit Operating System.
Has anybody else experienced this and passed this point?
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?
OK letās 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
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I am good now. I uploaded the new firmwareā¦opened GroundControlā¦testing of the motors went well. Thank you so much. I will continue with the posted instructions.
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Thanks for the update! It always feels good to help 
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Okay, my Maslow has under gone a rebuild, and Iām 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. Itās repeating the āConnectedā / āConnection timeoutā about every five seconds. (All latest versions).
Any suggestions?
Cheers.
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?
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Dunno, weirded me out! Iāve been around in circles. Third install from firmware up and, itās working. I blame my lappie!
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Iām also having the same problem where ground control continually toggles from connected to not connected
Iām running win 10 (up graded from a win 7) gateway desktop dx4822 I also re-installed a couple of times.
with newest firmwareā¦ 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 donāt know if that matters or notā¦
someone please help
thanks
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.
Iām looking for an example and will up date this in a few minutes
See if it disconnects
Thank you
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thanks @Bee, but I donāt know what that means, Iām totally new to this.
No problem - I will explain but need a little time to set it up.
Thank you
The āconnectedā¦not connectedā symptom is a showstopper for sure. The 'mega 2560 R3 ā is the right version/model of Arduino board, itās the one we all got with our kits.
The first thing to ask is - have you been through these steps? If you have, and got the happy āDone uploading.ā 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!
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I opened the firmware by selecting cnc_ctrl_v1., there was no āinoā extension only cnc_ctrl_v1 and clicked that and received the done loading.