📎 AI Summary:
The user is experiencing difficulty connecting their Printrbot Metal Simple 3D printer to a computer via COM8, despite the device manager showing the connection as OK and previous functionality. Multiple users suggest verifying the correct serial port settings, especially the baud rate, and confirm that COM port assignments are logical and consistent; the original poster emphasizes that COM8 has remained unchanged for months. The overall tone indicates troubleshooting focused on serial communication settings, with the user seeking advice on why the connection isn't working despite hardware appearing correct.
The user is experiencing difficulty connecting their Printrbot Metal Simple 3D printer to a computer via COM8, despite the device manager showing the connection as OK and previous functionality. Multiple users suggest verifying the correct serial port settings, especially the baud rate, and confirm that COM port assignments are logical and consistent; the original poster emphasizes that COM8 has remained unchanged for months. The overall tone indicates troubleshooting focused on serial communication settings, with the user seeking advice on why the connection isn't working despite hardware appearing correct.
Solution
helpifIcan
Fantastic Member
- Joined
- Jun 20, 2009
- Messages
- 932
The most important part of a serial connection is the correct baud rate, unless some new fancy auto negotiation is at work in the printer.
Make sure you look at the printer manual and verify the baud rate needed is the same as the PC is set to for com8.
When you said it worked before did you mean the printer or the some other device on that port.
Make sure you look at the printer manual and verify the baud rate needed is the same as the PC is set to for com8.
When you said it worked before did you mean the printer or the some other device on that port.
- Joined
- Jul 4, 2015
- Messages
- 8,995
The com port designation is a logical port meaning it doesn't really matter which # you assign it as long as the printer device in shows the correct COM in 'Devices and Printers' which if the device is unplugged or the printer is powered off the com assignment can change. As helpifican stated check the printer manual to verify the serial settings.
It is com8. It never, never, never changes.
For months, it's been com8.
I just plugged and unplugged 6 times. It is always the same.
The program, Cura, only shows com8 and different baud rates. No other com ports.
As stated, changing baud rates makes no difference.
The laptop can not connect to the 3d printer.
For months, it's been com8.
I just plugged and unplugged 6 times. It is always the same.
The program, Cura, only shows com8 and different baud rates. No other com ports.
As stated, changing baud rates makes no difference.
The laptop can not connect to the 3d printer.
helpifIcan
Fantastic Member
- Joined
- Jun 20, 2009
- Messages
- 932
Check device manager and see if there are any issues there. If not could be a hardware error. Check you PC or board manual and see if you can change ports. Sometimes they can be changed by straps on the mother board.
If none of this works you could buy a card to add additional com ports, or look for a USB to serial converter.
Sorry missed the device mgr pic.
If none of this works you could buy a card to add additional com ports, or look for a USB to serial converter.
Sorry missed the device mgr pic.
