188 replies to this topic

[karlmarxxx]

Darrin Can you post your updated code, thanks.

[John Cutburth]

Darrin, Did you ever look into storing the gcode to the SD card?

[Darrin]

Darrin Can you post your updated code, thanks.

Sure thing. I was going to try and post to the git-hub repository, but I'm not familiar enough with it to do that so I will just attach a ZIP of the 2 source code solutions to this message.

If you have any questions on how to use them in your own project, please don't hesitate to ask.

Attached Files

•  DazCamUI.zip   176.19KB   251 downloads

[Darrin]

Darrin, Did you ever look into storing the gcode to the SD card?

Hey John,

I am currently storing pre-parsed g-code on the SD card in the form of motion commands. I buffer them onto the SD when the program is executed from the UI application. However the Netduino application does not directly parse the g-code, this is done on the Windows PC.

Does that answer your question?

[Darrin]

Here's a new project video: Using my Netduino powered CNC machine to build an iPad stand from Walnut and Cherry. Enjoy!

[Chris Walker]

It's impressive that what starts out as a rough process...drilling into wood...turns into such a nice product in the end. Thanks for sharing this! Dang, I wonder what else we could make with Netduino-powered CNCs? Chris

[John Cutburth]

Does that answer your question?

Yes, thanks

[baz926]

Hi, This project is awesome , Darrin you have done a great job. I am planning on building a similar setup for a school project. However I have a few questions; from reading through the posts I gather that you are using Netduino Plus (with the Ethernet IP communication) is this a necessity? Or can I just use a standard Netduino and adapt the code to communicate via USB? Also if I was to purchase a Netduino Plus instead of the standard one do you think it’s worthwhile? (Do I really need SD cards, and Ethernet? I have an arduino and have never needed them) Many Thanks in advance Regards Baz

[Darrin]

Hi Baz, Thanks for the comments. Yes I believe you could adapt the code to a standard netduino without too much effort. The SD card does help with the performance though, so you would lose some of the benefits of buffering the motion commands. I don't think that the "plus" is a must, but I enjoy having the ethernet and SD and have found them both to be very useful. I hope that helps. Don't hesitate to ask if you need help with your machine.

[johnblagg]

Here's a new project video: Using my Netduino powered CNC machine to build an iPad stand from Walnut and Cherry. Enjoy!

Hey Darrin I have read this entire post and really appreciate the work you have done here and would like to use it ... my only problem is I have a different set of driver boards and the pin outs are confusing me.

The bords I have have step , direction , and enable and I have not figured out which pins to use they are TB6560aho boards could you possibly help me with how to connect this to the netduino plus pins so I can run your code?


I have already built a rough 2 axis machine and plan on adding a 3rd axis if I can get some code running

[terb]

great project ! love it !

[babinda01]

Hi Darrin I have just found your project - great work, and thanks for sharing. I have a couple of questions if I may. 1. Can you pause the machine, if it is running a gcode file, at any stage? If so is the pause immediate or does it take a second or so to pause? 2. Have you worked out the maximum steps per second you can get? I am wanting to be able to get up to approx 100K steps per second. Best regards Andrew

[Darrin]

I have just found your project - great work, and thanks for sharing.

Hi, thanks for your comments and apologies for my slow response. I don't come onto the site much lately and haven't had as much time to spend enjoying my machine as I would like. As winter gets close, I hope I get more time to use it.

1. Can you pause the machine, if it is running a gcode file, at any stage? If so is the pause immediate or does it take a second or so to pause?

The current version of the software doesn't support a pause. I've intended to add one for some time, but in my use of the machine, really haven't had a time where a pause would be wanted.

I suppose there have been a few times where it started to do something I didn't want, and then I just hit the E-Stop (my Easy button) and abort the job. If I need to resume, I remove the g-code from the beginning of the program up until the point where it left off, and resume.

That being said, it wouldn't be difficult to add it to the code.

2. Have you worked out the maximum steps per second you can get? I am wanting to be able to get up to approx 100K steps per second.

I did find that there were 2 practical limits to the number of steps per second that I was able to attain. The first was how fast the Netduino could output steps, and the second was how fast the stepper could take them.

I found that the Netduino could output them faster than what the stepper could handle based on my low voltage drivers. Once I exceeded that limit, the motors stalled and missed steps and lost their position.

With a higher voltage driver, I'm sure I could output more torque at a faster step rate and at that point the Netduino would fall behind in what it could deliver. My code isn't very efficient in that regard, and is limited by the Netduino, but it's good enough for my application.

Hope that helps!

[Darrin]

Hey Darrin I have read this entire post and really appreciate the work you have done here and would like to use it ... my only problem is I have a different set of driver boards and the pin outs are confusing me.

The bords I have have step , direction , and enable and I have not figured out which pins to use they are TB6560aho boards could you possibly help me with how to connect this to the netduino plus pins so I can run your code?

Hi John,

Sorry for the late response, I haven't been around much. I'm not familiar with those boards, but if you can point me at a spec sheet, I'd be glad to have a look.

I have already built a rough 2 axis machine and plan on adding a 3rd axis if I can get some code running

If you get a chance, post some details on your machine, I'd love to see it!

[paulgb]

Fabulous project and great work Darrin Paul

[matheo1010]

Hello This project interests me very much, nice work. I wanted to know if it would be possible for me to adapt the program on the board Cerbuino Bee because I just made a CNC and I would drive it with this board. Thank you.

[matheo1010]

Nobody can help me?

I have just received the board and I'm a bit lost: s

thanks.

[twinnaz]

how can I deploy on a n+2 im having deployment issues vs2012 says I cannot find my netduino and if I change he target to 4.3 then your pwm class throws and error

[John Cutburth]

Hey all I have been away for some time I was going to be working on some changes on this project so I thought I would give this thread a poke

 

Darrin did you ever get a repo setup for this?

[John Cutburth]

Hey all I know Phil created a repo for this a while back but I needed to update the code to with with .NET MF 4.2 so I created a new public repo under a MIT License. I will try to keep it up to date and maybe toss in some new features. 

 

repo location: https://github.com/jcphlux/DazCam