Adding a rotary axis to an xyzx router
02 Aug 2017 07:51 #96882
by aaron
Adding a rotary axis to an xyzx router was created by aaron
Hi
Thanks to the great people on the forum, I now a have my CNC router table working beautifully with two steppers on the x axis.
Now that all the axis on the machine have to be homed from the home all button, my question today is: How do I add a 4th rotary axis with a cheap Chinese breakout board that has connections for 5 stepper motors but only 4 connections for home switches?. Is it possible to share a connection, and as the machine homes in a sequence it only takes an input from the switch that it activates. Or is there another way to do it?
As ever, any help gratefully received.
Best regards
Aaron
Thanks to the great people on the forum, I now a have my CNC router table working beautifully with two steppers on the x axis.
Now that all the axis on the machine have to be homed from the home all button, my question today is: How do I add a 4th rotary axis with a cheap Chinese breakout board that has connections for 5 stepper motors but only 4 connections for home switches?. Is it possible to share a connection, and as the machine homes in a sequence it only takes an input from the switch that it activates. Or is there another way to do it?
As ever, any help gratefully received.
Best regards
Aaron
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02 Aug 2017 08:20 - 02 Aug 2017 08:20 #96883
by rodw
Replied by rodw on topic Adding a rotary axis to an xyzx router
Great news Aaron. I'm sure we talked you into using master branch (V 2.8) so immediate homing will do the trick. This is how I'll add my rotray axis to my gantry machine.
linuxcnc.org/docs/devel/html/config/ini-...ml#_immediate_homing
linuxcnc.org/docs/devel/html/config/ini-...ml#_immediate_homing
Last edit: 02 Aug 2017 08:20 by rodw.
The following user(s) said Thank You: aaron
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02 Aug 2017 20:37 #96940
by andypugh
Replied by andypugh on topic Adding a rotary axis to an xyzx router
Just set the rotary axis to home at zero speed (HOME_SEARCH_VELOCITY = 0) and it will home wherever it is. This is generally OK for rotary axes.
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03 Aug 2017 08:57 #96969
by aaron
Replied by aaron on topic Adding a rotary axis to an xyzx router
Thanks
Nice tip
Cheers
Nice tip
Cheers
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