Camera For Touchoff
17 Sep 2020 05:46 - 23 Sep 2020 02:36 #182507
by phillc54
Camera For Touchoff was created by phillc54
I have been playing around with a Qtvcp camera view tab embedded in Axis and Gmoccapy and with the help of Chris Morley I mangaged to get it working pretty well for touching off X and Y and also setting the rotation of the coordinate system.
Camera View:
The camera needs to be attached firmly and it is wise to spend the time adjusting it so the crosshairs point to the same place when Z is at the top of travel and also at the bottom of travel. Make sure that the crosshairs are aligned properly with the X and Y axes.
Install any dependencies required for Qtvcp (it is supported by default in the new LinuxCNC Buster ISO).
The attached file needs to be copied to the machines config directory.
Edit the machines ini file by adding these lines to the end of the [DISPLAY] section:
The Mark Edge button and the Goto Origin button will have their names changed to Set Origin and Set 0o Rotate depending on what function they are able to perform.
To touch off a sheet at an angle:
To touch off at a zero degree angle with the torch as the origin point:
To touch off at a zero degree angle using the current origin point:
To zoom:
Camera View:
Warning: Spoiler!
The camera needs to be attached firmly and it is wise to spend the time adjusting it so the crosshairs point to the same place when Z is at the top of travel and also at the bottom of travel. Make sure that the crosshairs are aligned properly with the X and Y axes.
Install any dependencies required for Qtvcp (it is supported by default in the new LinuxCNC Buster ISO).
The attached file needs to be copied to the machines config directory.
Edit the machines ini file by adding these lines to the end of the [DISPLAY] section:
Warning: Spoiler!
The Mark Edge button and the Goto Origin button will have their names changed to Set Origin and Set 0o Rotate depending on what function they are able to perform.
To touch off a sheet at an angle:
Warning: Spoiler!
To touch off at a zero degree angle with the torch as the origin point:
Warning: Spoiler!
To touch off at a zero degree angle using the current origin point:
Warning: Spoiler!
To zoom:
Warning: Spoiler!
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17 Sep 2020 09:02 #182521
by phillc54
Replied by phillc54 on topic Camera For Touchoff
Yeah, that would be easy to implement.
Camera only.
Rotation is manual with a mouse, right button + scroll.
Another method is to find an edge down the back of the sheet, press a button, and then go to the origin corner and click touchoff and calculate the angle using some trig and adjust for the offset. That is much more accurate when a full sheet (say 2400mm x 1200mm or 3000mm x 1500mm) is used. I have done some work on that with my laser pointer extending some work by BigJohnT.
There's project for you, Qtvcp uses opencv so it's half done.But with the camera, you should be able to implement edge detection and corner detection using opencv features. Imagine that! Just click one button "Align sheet" and let the machine do it all automagically. Let the camera wander around looking for edges then finally move to the origin corner.
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17 Sep 2020 09:14 #182522
by rodw
It will be years before I have the time to play with stuff like that plus I much prefer directing software projects than coding them.
The story of mylife business right now. I don't know why I started ramping up a hobby business into a serious brand when I turned 60!
Replied by rodw on topic Camera For Touchoff
There's project for you, Qtvcp uses opencv so it's half done.
It will be years before I have the time to play with stuff like that plus I much prefer directing software projects than coding them.
The story of my
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