when we want to pc connect to 3D printing with Pronterface, but Pronterface could not connect to 3D printing and show " could not open port" error. How to solve ?
1、Don't power on 3D printing .
2、USB cable connect to 3D printing .
3、Set port and Push the Connect button in Pronterface
4、when PC connect 3D printing with Pronterface ,then power on 3D printing.
you can connect to 3D printing with Pronterface!
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