General LinuxCNC to servo motor Q
- RethaKoch
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16 Oct 2025 11:55 #336537
by RethaKoch
General LinuxCNC to servo motor Q was created by RethaKoch
Hi guys,
About to build a 1.5*1m cnc router. I have experience running all manner of other machines, I've built machines, etc, but new to the CNC side of things. Dabbled in programming, robotics, etc
What should I be searching for if I want to use LinuxCNC to run servo motors? I presume I need a way to connect the laptop to the servo motor drivers to handle g-code conversion for the drivers. Powering seems straightforward, 1 supply per driver. Ball screws and linear rails for motion control, etc etc
Also if anyone thinks I shouldn't use LinuxCNC, feel free to tell me why/why not. Servo motors because it is a learning experience before I attempt to fix a ~6m*3m milling/router table with a similar but beefier construction.(Y gantry, cast iron bed etc)
Tl;dr: PC -> ???? -> servo driver -> servo motor. What is the ????
About to build a 1.5*1m cnc router. I have experience running all manner of other machines, I've built machines, etc, but new to the CNC side of things. Dabbled in programming, robotics, etc
What should I be searching for if I want to use LinuxCNC to run servo motors? I presume I need a way to connect the laptop to the servo motor drivers to handle g-code conversion for the drivers. Powering seems straightforward, 1 supply per driver. Ball screws and linear rails for motion control, etc etc
Also if anyone thinks I shouldn't use LinuxCNC, feel free to tell me why/why not. Servo motors because it is a learning experience before I attempt to fix a ~6m*3m milling/router table with a similar but beefier construction.(Y gantry, cast iron bed etc)
Tl;dr: PC -> ???? -> servo driver -> servo motor. What is the ????
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- andypugh
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16 Oct 2025 13:26 #336548
by andypugh
Replied by andypugh on topic General LinuxCNC to servo motor Q
The main thing you need is servo drives. These can be controlled by analogue voltage speed command (traditional), step-dir (a bit of a kludge but suits parallel port control, amongst other options), EtherCAT (relatively modern), Modbus (probably not quick enough for axis control). Some drives even want individual PWM signals for each element in the H-bridge.
Do you have any servo hardware yet?
Do you have any servo hardware yet?
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