[Bri4n]

Are the hobby cnc boards compatible with EMC?

[Snipes44]

Yes they are, that what I'm using with my Joe2006 right now. Hobbycnc pro boards are a great starter board.

[Bri4n]

Thanks

[NeilR]

I dont mean to hijack the thread but this is related....
Ive just completed the hobby cnc pro board and my joe 4x4 router. EMC2 knew about the board during the stepconf wizard which was great. However,
I cant get mine to work properly yet. Ive got 305oz steppers (bought from hcnc with the kit) but cant get the velocity/acceleration numbers right.
Any help available? Thanks.
Neil

[pminmo]

I dont mean to hijack the thread but this is related....
Ive just completed the hobby cnc pro board and my joe 4x4 router. EMC2 knew about the board during the stepconf wizard which was great. However,
I cant get mine to work properly yet. Ive got 305oz steppers (bought from hcnc with the kit) but cant get the velocity/acceleration numbers right.
Any help available? Thanks.
Neil

Velocity and acceleration numbers will depend on how efficent the mechanics are as you build them as well as the power supply voltage.

[NeilR]

Thanks Phil.
Im hoping someone can give me a starting point at least. The best I have managed is a single step every 3 or 4 seconds. P/s is 36vdc.
Im happy that all is working as I tested the trial of mach3 and all axis worked fine. I want to persevere with EMC2 though if I can.

[pminmo]

Are you using the stepconf wizzard?

[NeilR]

Yes Phil, I am.

[pminmo]

Start with low numbers for velocity and acceleration in stepconf wizzard and on each axis click on the button to test the axis. Up the velocity number till it become unreliable, then back it off by ten percent. The do the same with acceleration.

[NeilR]

Thats what ive been doing Phil. Can you give me an idea of what numbers I should be using? At least then I have a target.
I spent more time on it today and achieved the same result ie 1 step every few seconds. Im expecting that this is not how it should be. I should be hearing/seeing the motors spinning.
I appreciate you taking the time to advise me Phil..Thank you. Its quite frustrating when I try the mach3 trial version it just works. As far as the motors and jogging etc are concerned.

Actually, Ill give you a run down on what ive done. You already know what hardware I have.
In stepconf wizard I selected the hobbycnc pro driver which automatically inserts the correct timing signals so cant be adjusted (2000 for each item I think). Paraport is default except A step and direction pins are allocated to Y for dual motors on Y axis. X axis config is 200 (but have tried 257 for 1.3 deg motors), stepping is 1/4 or 4, Pully is 1:1 cause there arnt any, leadscrew pitch is set at 12.5 (2 turns per inch = 12.5mm per turn), then theres the elusive velocity and acceleration where I have tried low numbers right up to the hundreds.

Thanks.

Neil

[verdecnc]

Yes they are, that what I'm using with my Joe2006 right now. Hobbycnc pro boards are a great starter board.

*****Buyer beware*****


Interesting you like the hobbycnc pro board. Just had to make a comment because I have not had success with it. Other users on the yahoo forum have had tons of problems with the board. Everything from poor packaging, wrong assembly instructions, missing parts, you name it. Glad it seems to be working for you though.

I have found it is not a good board and the owner of this home based company is a pain to deal with. If I had to do it over again, I would buy a different board. Buyer beware!!!

[verdecnc]

Are the hobby cnc boards compatible with EMC?

If you can actually get the hobby cnc board to function. No luck here. Along with many other un-satisfied customers. Waste of money on my part.

[pminmo]

Attached is a picture of my Y axis config. While it's my Halo design http://pminmo.com/PMinMOwiki/index.php5?title=Halo not a HobbyCNC board, it also uses the same SLA parts. You say 1.3 degrees, I'm assuming you mean 1.8 degrees? I suspect your issue is metric unit numbers so you might want to try inch units just to make sure it's working. But for info to try 30 in/s squared is 762 mm/second squared, and 1 in/s is 25.4 milimmeter/second.

[NeilR]

Thanks Phil. Ill try it today and report back.

[NeilR]

verdecnc
My HCNC board went together without a hitch. Instructions were excellent and followed to the letter. Only deviation was I made my 36vdc p/s from 3 Dell server supplies wired in series. Didnt need or use the support so couldnt comment on that. My board worked perfect from day one using Mach3. For a starting point, im happy with it. Just hope to get it running with EMC2.

[sgman]

Hello

I want to try the hobbycnc board with Emc

Did you get your setup to work with Emc and Hobbypro board

Thanks

Steven G

[NeilR]

Hi Steven,
Yes, I did. It works a treat. Had a bit of drama getting it all to work though but with the help of the emc board guys I got there.
If you need help just let me know and if I know the answer its yours.

One more thing. The stepconf wizard pretty much does all the config work for you. However there is a hurdle. In the port/pin assignments of the stepconf wizard the HCNC step and direction signals are the REVERSE of the defaul setting in EMC. Watch that one as it had me stumped for quite a while....missing the obvious. I mistakenly thought the default settings would have worked....they dont. Other than that, its pretty straight forward. I have my motors on 1/8th stepping for all axis. If you run 2 motors on the Y axis like I do, there are no "slave axis" options like in Mach3 so you have to change the pin assignements back in the stepconf wizard to make pins 8 and 9 Y axis instead of A. Also, you will not be able to test the Y axis if you have slaved it this way. Only one motor will work. What I did was set X to the correct velocity and accel and once happy with it, I just put those same settings into Y. I then tested Y from within EMC proper.
Hope you follow this.


Neil