Voron 2.4 with 1LC, Z-Probe to optical switch

Wobi

Hello everyone, I would like to replace the tap on my Voron 2.4 R2 with ASA Tap and Duet Mini5+ with 1LC Toolhead with a CNC Tap. This one: https://meltbro.de/cnc-voron-tap-kit-chaoticlab-fuer-voron-2-4-oder-trident-metall-hiwin-omron-sensor.html here with 5 volt sensor.
My current tap has the two-pin Omron D2HW-C203MR microswitch connected to 'io0 in' and 'GND'.
The above CNC Tap has a three-pin optical switch. Do I now only have to supply 5 volts to the optical switch or do I have to change the terminals and if so, how?
What exactly do I have to change in config.g?
At the moment it says:
; Z-Probe
M558 P8 C"121.io0.in" A1 H10 F300 T10000
What do I need to change in this line?
Or should I use a completely different optical switch?
Oh, the firmware version of both boards is 3.5.0 Rc1 updated last week.
Many thanks for your help.
Greetings Wolfgang

droftarts

@Wobi Watch this video before changing from ASA Tap to CNC Tap. https://youtu.be/0wY5P8Y-w9k

Ian

Exerqtor

I went from a RC8 TAP i printed myself out of ABS to a Mellow Alu/cnc TAP with the same rail and optotap board as i used on the printed RC8.

And the Mellow TAP is SOOOO much stiffer and better behaving than the printed one was. Without doubt the thing i'm most happy with buying for the printer the last 2 years!

So i for sure don't share the opinion of the dude in the clip @droftarts linked to.

Must be mentioned that I have no idea how the rail it ships with from Mellow is though. I use a 440C stainless with Z1 preload atleast 🤷‍♂️

jay_s_uk

@Exerqtor I fitted the Mellow CNC tap but wasn't very impressed with the rail that came with it, even though its LDO and used the one I had from my ASA version. Other than that, I think its fine

Wobi

@jay_s_uk
Hello and thank you for your information.
I was also very surprised by the result and can't imagine that plastic, whatever it is, would be stiffer than solid aluminum.
I will definitely get a CNC Tap, at the moment I'm leaning towards Mellow, also because of the posts above. But I have to order it from China, which I don't like at all.

But my first question remains unanswered.
What do I have to change in terms of connection technology and G-Code technology when I switch from a mechanical to an optical switch?

Wolfgang

jay_s_uk

@Wobi IIRC, only types P8 and P9 can be used with M558 on a toolboard so you shouldn't need to change anything. you will however have to wire 5v, ground and the signal wire accordingly

Wobi

@jay_s_uk
Thanks
I just saw that the Mellow CNC Tap can also be ordered here. I'll do that now and report back after the conversion.
Wolfgang

Wobi

@Wobi Hello everyone,
I have now rebuilt.
The macro 'Self-levelling Gantry' and the commands 'G32' and 'G29' ran completely straight away and without repetitions, which was not possible before. The first print went as expected, without any problems, although I accidentally used a 0.6 profile with a 0.4 nozzle. Now I'm going to tackle a big part.
The optical sensor worked straight away as predicted by 'jay_s_uk' above, I only had to apply an additional 5 volt voltage.
This X-axis end stop:
https://www.printables.com/de/model/558512-mellow-cnc-tap-adapter-x-endstop-for-voron-24-and-
I had to print and screw it on.
For me, this conversion was worth it, the leveling is now done without repetitions and within a few minutes.
Externally there was only a slight change visible: when I move the print head up and down vigorously, it moves less than before, but it still moves.

Now two more questions:
Do the commands 'G32' and 'G29' have to be called before printing with a hot or cold printing plate and in exactly this order?
What do I have to enter as the start GCode and the end GCode in Prusa Slicer 2.7?

Thank you for your great help.
Wolfgang

jay_s_uk

@Wobi i tend to "soak" my 2.4 before levelling etc. the example of my config can be found here https://github.com/TeamGloomy/Troodon-V2/blob/improved/Config/sys/start_print.g
specifically, I use start_print.g as it allows me to pass parameters to it from the slicer rather than using the built in start.g

Wobi

@jay_s_uk Thanks, that solves this thread
Wolfgang