Hypersensing used as a router touch plate

More
19 Aug 2023 08:55 #278447 by Hendrixx
could ohmic.comp be modified to be used as a routers touch probe

Please Log in or Create an account to join the conversation.

More
19 Aug 2023 09:35 #278450 by rodw
I think it could  be. Use the included ohmic.comp component.You don't need a seperate power supply or any extra components
As you set the thresholds etc up, use halscope to see the voltages.
When you do your probing, probe towards the plate, then robe away slower until contact breaks and that will be your surface.

Please Log in or Create an account to join the conversation.

More
19 Aug 2023 09:37 #278451 by tommylight
Probably yes, but the only thing i can think of is :
Why?

Please Log in or Create an account to join the conversation.

More
19 Aug 2023 17:24 #278480 by Hendrixx
because I built a table that has a router plasma and scribe using 2 z axis I was thinking would be nice to reclaim that input pin if I can do it in software in qt dragon the same way as qtplasmac, and as long as im probing conductive materials it should be a very accurate probe sensor
The following user(s) said Thank You: tommylight

Please Log in or Create an account to join the conversation.

More
19 Aug 2023 17:27 #278481 by tommylight
OK, in that case i'll leave you in the competent hands of RodW, as i do not use ohmic probing, yet.

Please Log in or Create an account to join the conversation.

More
20 Aug 2023 01:52 #278514 by rodw
You do need an encoder input to use hypersensing. So it may not be helpful. With plasma there is no need for an encoder so with firmware the encoder is split into 3 x encoder A

Please Log in or Create an account to join the conversation.

More
20 Aug 2023 09:55 #278534 by Hendrixx
I got it working. I used 7i96.dpl for the second encoder, same as my qtplasmac sensing circuit, instead of the connection to the torch its a connection to a electrically isolated touch plate i made out of resin and and a guage block . I used ohmic.comp's arc-on signal as my source, unlinked probe-in created a new signal probe in and sent it to the gui led and motion.probe-input. works really reallywell. what would be a good way of testing its accuracy without buying a bunch of different tool height setters
The following user(s) said Thank You: rodw

Please Log in or Create an account to join the conversation.

More
20 Aug 2023 09:57 - 20 Aug 2023 10:00 #278535 by Hendrixx
the hal files I used
Attachments:
Last edit: 20 Aug 2023 10:00 by Hendrixx. Reason: attached files in wrong place

Please Log in or Create an account to join the conversation.

More
20 Aug 2023 10:52 #278538 by Hendrixx
could this thread be moved over to qtvcp please

Please Log in or Create an account to join the conversation.

More
21 Aug 2023 07:53 #278590 by rodw
Great work. 
To test accuracy, try lifting the z axis by the diameter of a milling cutter or some known diameter cylinder and roll under it. Adjust to find the hysteresis and adjust for it.

But as I said, use G38.3 then G38.5 before zeroing.

Please Log in or Create an account to join the conversation.

Moderators: snowgoer540
Time to create page: 0.091 seconds
Powered by Kunena Forum