Nice video! Well done > On 20 Jan 2017, at 19:41, Klemen Zhivko <klemenzivko...@gmail.com> wrote: > > And another youtube video cutting whole part. > https://www.youtube.com/watch?v=DdLqBqbmIEE&t=101s > > Dne sreda, 04. januar 2017 10.53.57 UTC+1 je oseba Klemen Zhivko napisala: >> >> Just to follow up: machinekit with BBB and thc works on my setup - here is >> video of machine in action. >> https://youtu.be/2oMeL6kEZrk >> >> >> Dne sreda, 23. december 2015 12.58.00 UTC+1 je oseba Klemen Zhivko napisala: >>> >>> OK I understand. >>> My first goal is to finish machine, than I will try CRAMPS setup for 5 axis >>> with THC enabled. >>> I received CRAMPS board in the meantime. >>> If @Charles author of CRAMPS can assign analog pin that can be used for THC >>> it would be great. >>> If there is some shortcut to working INI and HAL files for CRAMPS that >>> support THC control it would be great - I would appreciate for any example >>> I can use so I don't need to begin from scratch.. >>> >>>> On Saturday, December 19, 2015 at 8:18:09 PM UTC+1, Viesturs Lācis wrote: >>>> Then I do not understand, what is not clear to you. Yes, rotating the tube >>>> will require the torch to go up or down, but there are other reasons as >>>> well that can require to adjust torch height (material surface being >>>> curved, material not laying totally horizontal etc), that is why the >>>> plasma tip voltage is measured and the torch position is adjusted >>>> according to that (if the torch is too close, the voltage is lower, if it >>>> is too high, the voltage increases; it might be ~140-160V for 3-4 mm >>>> distance, but that will vary for particular plasma torch and plasma >>>> source). In this case it is _not important_, what are the causes. You do >>>> not need to tackle kinematics, simply implement standard THC >>>> functionality. One way to do that is the task sequence I provided. >>>> >>>>> On Friday, December 18, 2015 at 9:27:26 PM UTC+2, Klemen Zhivko wrote: >>>>> Viestrus, >>>>> maybe I was misunderstood - yes option 1 is the right one. >>>>> >>>>> >>>>>> On Fri, Dec 18, 2015 at 6:08 PM, Viesturs Lācis <viestur...@gmail.com> >>>>>> wrote: >>>>>> >>>>>> >>>>>> On Friday, December 18, 2015 at 5:40:41 PM UTC+2, Klemen Zhivko wrote: >>>>>>> >>>>>>>> >>>>>>>> Second of all, I understand that you want basic THC functionality (not >>>>>>>> adding offset moves for X and Z to keep the torch tip at the same spot >>>>>>>> on tube's surface, when the rotary head is moved) and since you are >>>>>>>> using CRAMPS, I understand that you are using stepper motors. >>>>>>> Ugh, as I understand if - if THC is operating, rotating pipe (moving B >>>>>>> axis) should have effect on Z axis. Standoff of torch to pipe surface >>>>>>> (acording to my sketch) is measured in Z direction. >>>>>> >>>>>> THC description clearly says that it adjust torch height according to >>>>>> plasma tip voltage - either you did not read it or I do not understand, >>>>>> what exactly do you want. Which one of these 2 options? >>>>>> 1) adjust Z position, based on plasma tip voltage, aka standard THC; >>>>>> 2) adjust Z (and X as well) position to keep plasma torch tip on the >>>>>> same spot on the square (rectangle to be more precise) tube surface as >>>>>> rotary head is turning; >>>>>> >>>>>> -- >>>>>> website: http://www.machinekit.io blog: http://blog.machinekit.io >>>>>> github: https://github.com/machinekit >>>>>> --- >>>>>> You received this message because you are subscribed to a topic in the >>>>>> Google Groups "Machinekit" group. >>>>>> To unsubscribe from this topic, visit >>>>>> https://groups.google.com/d/topic/machinekit/jTE2p9Jc6Fo/unsubscribe. >>>>>> To unsubscribe from this group and all its topics, send an email to >>>>>> machinekit+...@googlegroups.com. >>>>>> Visit this group at https://groups.google.com/group/machinekit. >>>>>> For more options, visit https://groups.google.com/d/optout. > > -- > website: http://www.machinekit.io blog: http://blog.machinekit.io github: > https://github.com/machinekit > --- > You received this message because you are subscribed to the Google Groups > "Machinekit" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to machinekit+unsubscr...@googlegroups.com. > Visit this group at https://groups.google.com/group/machinekit. > For more options, visit https://groups.google.com/d/optout.
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