Additional hardware-button for coolant
- TripleM
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22 Oct 2025 12:50 #336874
by TripleM
Additional hardware-button for coolant was created by TripleM
Hello,
I would like to add a hardware button for cooling, for example.
Currently, my *.hal entry looks like this:
This allows me to switch the coolant on and off via the GUI.
How can I add the hardware button (push button)?
I want to be able to continue switching it on and off in the GUI and see that the cooling is switched on.
Thanks
I would like to add a hardware button for cooling, for example.
Currently, my *.hal entry looks like this:
net coolant-flood <= iocontrol.0.coolant-flood => hm2_7i96s.0.7i84.0.0.output-11This allows me to switch the coolant on and off via the GUI.
How can I add the hardware button (push button)?
I want to be able to continue switching it on and off in the GUI and see that the cooling is switched on.
Thanks
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- zz912
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22 Oct 2025 13:01 #336875
by zz912
Replied by zz912 on topic Additional hardware-button for coolant
Mayby this could help
forum.linuxcnc.org/24-hal-components/53990-button-toggle
forum.linuxcnc.org/24-hal-components/53990-button-toggle
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- andypugh
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22 Oct 2025 13:20 - 22 Oct 2025 13:24 #336876
by andypugh
Replied by andypugh on topic Additional hardware-button for coolant
On my lathe I fitted a 3-position switch, labelled with "on - auto - off". This allows me to override the G-code if required, to either on or off.
The HAL to do this looks like this:
Possibly not the simplest way, I suppose that it could have been done with simple AND and NOT components
coolant-out = (coolant _flood OR coolant_on) AND (NOT coolant_off)
Or even LUT5.
Truth-table for LUT5
The HAL to do this looks like this:
net coolant-off hm2_7i84.008a.input-25
net coolant-on hm2_7i84.008a.input-26
loadrt mux_generic config="bb4"
addf mux-gen.00 servo-thread
net coolant-off mux-gen.00.sel-bit-00
net coolant-on mux-gen.00.sel-bit-01
net coolant-flood mux-gen.00.out-bit => hm2_7i84.008a.output-08
net coolant-auto iocontrol.0.coolant-flood mux-gen.00.in-bit-00
setp mux-gen.00.in-bit-01 0
setp mux-gen.00.in-bit-02 1
setp mux-gen.00.in-bit-03 0Possibly not the simplest way, I suppose that it could have been done with simple AND and NOT components
coolant-out = (coolant _flood OR coolant_on) AND (NOT coolant_off)
Or even LUT5.
Truth-table for LUT5
coolant_flood | 0 1 0 1 0 1 0 1
coolant_on | 0 0 1 1 0 0 1 1
coolant_off | 0 0 0 0 1 1 1 1
coolant_out | 0 1 1 1 0 0 0 0
LUT5 Mask = 14 (0x0E)
Last edit: 22 Oct 2025 13:24 by andypugh.
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- newbynobi
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22 Oct 2025 13:26 #336877
by newbynobi
Replied by newbynobi on topic Additional hardware-button for coolant
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