DDCSV1.1 4 Axis controller

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John Stevenson:
One thing lacking on this controller and not available unless you spend 3x the price is support for lathes.

Not a lot of different between lathe and mill until you get to threading and then you need three additional physical inputs. A+, B+ and Z+ or index.
Just an indexing pulse like Mach 3 uses will not work.

Now I don't know if any inputs can be freed up by daisy chaining limits or such like but I have a feeling it's a bridge too far ?

Benedikt:

--- Quote from: chriscnc on March 16, 2017, 06:46:20 PM ---Wow Benendikt, that is a heck of a undertaking.... Im not familiar with pandora so i will be no help, is the goal just the front end and leaving the FPGA alone for motion? or is it a full new rewrite? Are you basing any of it off of LinuxCNC or UCcnc for motion path planning? I'm trying to just better understand how this controller works as it seems to mirror more expensive controllers functions i.e standards. Meaning if i can figure out how to write a M98 sub on this I should be able to do it on a Siemens etc as they should respond the same. Have you seen the feature set of the AU based HIND this would be a good reference for UI and features.. basically the same idea but the DDCSV is 1/4 the price and has better hardware. We could really do something with this if we can get this worked out. Thanks for all your work on this Benedikt... Im happy to help where i can and test as well

http://www.hindtechnology.com/

--- End quote ---
Hi Chris!
I have seen the Hind controller. Interesting project.
Back to the DDCSV, which is now called Pandora (the modded firmware). Initially I wanted to do a full rewrite and I started writing some software and it ran, but I ran out of spare time to reverse-engineer the driver (just yet, this will be done eventually!). So my current goal is to leave the application in place that the Chinese developed and build a layer in between the Linux file system and the firmware. This layer is dynamically rewriting the G-Code files as they are read by the application. I have created a block diagram which I will tidy up and share later. And yes, it works. I have tried it out and it works really nicely.
Essentially all it does is take the original G-Code file and parse it. Then it replaces G-Codes unknown to the chinese application with macros that consist of G-Codes that the chinese application understands. All on the fly. It can also do the different feed rate modes and other corrections, fix invalid comments, do scalings, offsets and just about any change to the code right on the controller, before it is loaded by the firmware. Crazy, isn't it :loco:
I am also able to intercept actions made in the file manager. E.g. pressing MODE on a file can now not only delete it, but can trigger some other action instead of the deletion (e.g. reboot the controller, rewrite the file with the builtin parser without running it directly, run a shell script...). Same goes for the copy action which could now also trigger additional features. I have also cleaned up the file manager in general and made the names more clear. There are now two folders in the top menu only: USB and a secondary folder which gives access to a new partition in the internal storage of the controller which allows you to store your code there permanently (you can delete it though) without the USB present and a temporary folder in RAM for storing files that will be deleted again when the controller reboots.

chriscnc:
@ John... Yep i don't like the HIND its basically a DDCSV but with external monitor and keyboard. Im just referring to its UI and options as its all based on a single ARM chip, The DDCSV is using a ARM for the front end and a FPGA for motion... I.E if we can get this to match the Hind UI we all will have a much better controller for the cheaps.

Benedikt:
Here is a quick screenshot of the new file manager:

chriscnc:
Got ya ok i see what your going for.... Where can i help. I can start making a list of what the controller cant do/has issues with. I'm trying to also identify options and what it can do as there seams to be some hidden features, so it may be helpful with integration with pandora i.e we may just need to reference an internal M command that is already there. Is there any latency or processing issues running this app in parallel.

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