[Emc-users] sherline configurations
Can anyone tell me the right numbersto pput inn the step-config wizard in ubuntuu live emc2 for a sherline mill with wn a-axis? - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Which number are you looking for? I assume it has something to do with an A axis but that is as far as I can guess... A lot more detail on what you want would help someone figure out what to tell you. John On 24 Apr 2008 at 5:56, [EMAIL PROTECTED] wrote: Can anyone tell me the right numbersto pput inn the step-config wizard in ubuntuu live emc2 for a sherline mill with wn a-axis? -- --- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com /javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Which number are you looking for? I assume it has something to do with an A axis but that is as far as I can guess... A lot more detail on what you want would help someone figure out what to tell you. John On 24 Apr 2008 at 5:56, [EMAIL PROTECTED] wrote: Can anyone tell me the right numbersto pput inn the step-config wizard in ubuntuu live emc2 for a sherline mill with wn a-axis? -- --- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com /javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users I'm looking for the numbers to put in for all four axes so that it runs properly - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Everyone has to start somewhere. Give the guy a break. Why be part of a group when you dont want to help out? John Kasunich wrote: [EMAIL PROTECTED] wrote: I'm looking for the numbers to put in for all four axes so that it runs properly In other words, it sounds like you know absolutely nothing about your own machine, and you want someone else to do all the work for you. - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
There are hundreds of users out there with factory Sherline configurations running on the old BDI install and who may be interested in upgrading to EMC2. Sherline does not seem to be interested in helping them upgrade to EMC2 and I am not sure what special things were modified in the Sherline setup. Perhaps Ray Henry can offer information. Creating a canned setup for these users would be a nice gesture to one of EMC's largest user groups. As for non-factory Sherline setups, I agree with JMK that the user should figure out their setup and use Stepconf. Regards, Steve Stallings -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of John Kasunich Sent: Thursday, April 24, 2008 8:55 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] sherline configurations [EMAIL PROTECTED] wrote: I'm looking for the numbers to put in for all four axes so that it runs properly In other words, it sounds like you know absolutely nothing about your own machine, and you want someone else to do all the work for you. Stepconf is very simple to use - just answer the questions that it asks. I'm sure the answers to most of its questions are readily available either in the manual or from Sherline. If you run across a _specific_ question that you need help with, post that, as well as what you have already tried. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun .com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
In defense of John and many of the other long time EMC supporters, it is easy to get frustrated answering questions for people who seem to not be willing to try to help themselves. Newbies in many forums often fail, or seem to fail, to read any of the already available information. I do not have access to a factory Sherline setup, nor does JMK to the best of my knowledge. For that matter, the person who asked did not specify if he had a factory or a custom Sherline setup. I do know the threads and stepping for a Sherline factory rig, but have no knowledge of reasonable max velocity and accel settings. I seem to remember that there is at least one status input, but do not remember what it did. Perhaps definitive information can be found here: http://groups.yahoo.com/group/SherlineCNC Regards, Steve Stallings -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Thursday, April 24, 2008 9:28 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] sherline configurations Everyone has to start somewhere. Give the guy a break. Why be part of a group when you dont want to help out? John Kasunich wrote: [EMAIL PROTECTED] wrote: I'm looking for the numbers to put in for all four axes so that it runs properly In other words, it sounds like you know absolutely nothing about your own machine, and you want someone else to do all the work for you. - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun .com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
On Thursday 24 April 2008, John Kasunich wrote: [EMAIL PROTECTED] wrote: I'm looking for the numbers to put in for all four axes so that it runs properly In other words, it sounds like you know absolutely nothing about your own machine, and you want someone else to do all the work for you. Stepconf is very simple to use - just answer the questions that it asks. I'm sure the answers to most of its questions are readily available either in the manual or from Sherline. If you run across a _specific_ question that you need help with, post that, as well as what you have already tried. Regards, John Kasunich A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. I suspect we will have to explain the 'slanguage' of machining first, on a strange word by strange word footing. Or perhaps recommend a good tutorial. I'd say to get a copy of the machinery handbook, but for a newbie, that nearly 2000 pages would scare almost anyone off. So lets suggest some good reading material? That, I'll leave to the more widely read folks here since I'm also an amateur. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) All his life he has looked away... to the horizon, to the sky, to the future. Never his mind on where he was, on what he was doing. -- Yoda - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Gene Heskett wrote: A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. I'll admit I was a bit rough, and I apologize. But... He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. EXACTLY! He didn't say I've done steps 1, 2, and 3, but I'm stuck on step 4. He said give me the numbers. And when John Thornton asked him Which number, he said all of them. I am more than willing to try to help. But the person asking for help has to put in some effort too. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Gene Heskett wrote: A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. I'll admit I was a bit rough, and I apologize. But... He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. EXACTLY! He didn't say I've done steps 1, 2, and 3, but I'm stuck on step 4. He said give me the numbers. And when John Thornton asked him Which number, he said all of them. I am more than willing to try to help. But the person asking for help has to put in some effort too. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users I've tried putting numbers in like 400 steps per rev .5 micro stepping and the machine only travels half the distance that you tell it to. Also the Y and Z axes run backwords and I can't figure out where to go from here. any help would be greatly appreciated. - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
On Thursday 24 April 2008, John Kasunich wrote: Gene Heskett wrote: A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. I'll admit I was a bit rough, and I apologize. But... He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. EXACTLY! He didn't say I've done steps 1, 2, and 3, but I'm stuck on step 4. He said give me the numbers. And when John Thornton asked him Which number, he said all of them. I am more than willing to try to help. But the person asking for help has to put in some effort too. Regards, John Kasunich Yes, exactly John. Now if the OP is copying the mail... -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) momentum, n.: What you give a person when they are going away. - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
I agree that the integrator must put some effort into understanding the machine he/she is installing EMC into. I was the good cop this time and you were the bad cop...lol I have almost never failed to get an answer to a specific question either here or on the irc or on cnczone about EMC and related things. John On 24 Apr 2008 at 11:46, John Kasunich wrote: Gene Heskett wrote: A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. I'll admit I was a bit rough, and I apologize. But... He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. EXACTLY! He didn't say I've done steps 1, 2, and 3, but I'm stuck on step 4. He said give me the numbers. And when John Thornton asked him Which number, he said all of them. I am more than willing to try to help. But the person asking for help has to put in some effort too. Regards, John Kasunich -- --- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com /javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Oops - only answered half of your question: [EMAIL PROTECTED] wrote: Also the Y and Z axes run backwords In general, if it is going backwards, change the sign of the scale value. If you had 2 steps per inch and it is going the wrong way, use -2 steps per inch. Since I haven't used stepconf I'm not sure how it handles this. Is there a checkbox to tell it to reverse? If not, you can probably enter a negative value somewhere, either in the gear ratio, or the motor steps per rev. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Mike, Assuming you are using steppers... First you need to know how many threads per inch your lead screws are for each axis. The manufacturer should be able to get you this info, or perhaps Google. Each axis could be different. Next you need to know how many steps per revolution for each motor. Typically it is 200, but it could be something else. Then you can calculate the number of steps to move one inch for each axis. Next decide if you are using micro stepping or not for each axis. 1/2 microstepping = multiply steps per inch by 2. Once you have those figures we can tell you how to configure EMC2. My recommendation is to no bother wasting time guessing any of the numbers, but to find out for sure. I found the easiest way to reverse motor direction was to swap the 'A' and 'a' wires to the motor (8 wire bipolar). I'm not sure if this is an option available for every motor type, but it should be possible by swapping some of the wires. You might want to post with which kind of motors you have (number of wires, unipolar or bipolar). Andy [EMAIL PROTECTED] wrote: Gene Heskett wrote: A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. I'll admit I was a bit rough, and I apologize. But... He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. EXACTLY! He didn't say I've done steps 1, 2, and 3, but I'm stuck on step 4. He said give me the numbers. And when John Thornton asked him Which number, he said all of them. I am more than willing to try to help. But the person asking for help has to put in some effort too. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users I've tried putting numbers in like 400 steps per rev .5 micro stepping and the machine only travels half the distance that you tell it to. Also the Y and Z axes run backwords and I can't figure out where to go from here. any help would be greatly appreciated. - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Andy PGP Key ID: 0xDC1B5864 - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
[EMAIL PROTECTED] wrote: I've tried putting numbers in like 400 steps per rev .5 micro stepping and the machine only travels half the distance that you tell it to. Also the Y and Z axes run backwords and I can't figure out where to go from here. any help would be greatly appreciated. Now we're getting somewhere. If you get half the distance you expect, that means EMC is putting out half the steps that the machine needs. Steps per rev, microstepping, screw pitch, and all the rest are numbers that you are expected to know when you are building a machine. If you buy one that is pre-configured, the manufacturer might not tell you the numbers. But they should be in the manuals somewhere. (If not, shame on Sherline.) In your specific case, you told it 400 steps/rev with 0.5 microstepping, which comes to 800 steps per rev. You got half of what you expect, so the actual must be 1600 steps per rev. I bet the motors are actually 200 per rev (that is most common), and they are doing 8x microstepping to get 1600 total. So, try 200 and 8x microstepping and see what happens. Disclaimer: I don't have access to a Sherline and I haven't used stepconf, so some details might be fuzzy. For example, I don't know you tell stepconf to use 8x microstepping by entering 8, or 0.125. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
On 24 Apr 2008 at 10:49, [EMAIL PROTECTED] wrote: Mike, In each axis you can test your settings and adjust them after each test. To get you in the ball park use a ruler and move 1 if you only get 1/2 the you need twice as many steps. If you don't know the specifics about your machine you will have to do some testing and measuring. You can test the timings as well in step config to see what the limit is if you don't have that information as well. Ok, I'm back I had to go out to the shop and look at my EMC machine... I'd leave 200 steps/rev and 2 microsteps alone for now and adjust the leadscrew pitch to 10 and try that. Notice the numbers on the bottom change when you change an entry. The scale is how many steps per user unit. 200*2*10=4000 Btw, 200 steps/rev is what most steppers do... And you have it moving that is a good thing... John I've tried putting numbers in like 400 steps per rev .5 micro stepping and the machine only travels half the distance that you tell it to. Also the Y and Z axes run backwords and I can't figure out where to go from here. any help would be greatly appreciated. -- --- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com /javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] sherline configurations
Thank you all for all your wonderful help, I think now I'll be able to get my mill to run properly.---BeginMessage--- Thank you all for all your wonderful help, I think now I'll be able to get my mill to run properly. ---End Message--- - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Then, dont call this EMC-users Rather change this to EMC-Developers and have no users. or, if someone doesn't have something positive to say to a rudimentary question then don't participate. A user's list is for exactly that with questions from beginner to advanced. If folks want to complain about rudimentary questions then change the name else you mislead the public. The response to the post in that way was just dead uncouth. Steve Stallings wrote: In defense of John and many of the other long time EMC supporters, it is easy to get frustrated answering questions for people who seem to not be willing to try to help themselves. Newbies in many forums often fail, or seem to fail, to read any of the already available information. - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Mny times, the person asking the question is doing so because he is lost as to what could be the problem. Without someone to tell him what is important, how does he know what to say? Often the first cry for help is expected to be a opener so you can tell him what is important and what is not. Date: Thu, 24 Apr 2008 11:46:58 -0400 From: [EMAIL PROTECTED] To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] sherline configurations Gene Heskett wrote: A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. I'll admit I was a bit rough, and I apologize. But... He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. EXACTLY! He didn't say I've done steps 1, 2, and 3, but I'm stuck on step 4. He said give me the numbers. And when John Thornton asked him Which number, he said all of them. I am more than willing to try to help. But the person asking for help has to put in some effort too. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users _ Make i'm yours. Create a custom banner to support your cause. http://im.live.com/Messenger/IM/Contribute/Default.aspx?source=TXT_TAGHM_MSN_Make_IM_Yours - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
On Thursday 24 April 2008, [EMAIL PROTECTED] wrote: Gene Heskett wrote: A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. I'll admit I was a bit rough, and I apologize. But... He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. EXACTLY! He didn't say I've done steps 1, 2, and 3, but I'm stuck on step 4. He said give me the numbers. And when John Thornton asked him Which number, he said all of them. I am more than willing to try to help. But the person asking for help has to put in some effort too. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/jav aone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users I've tried putting numbers in like 400 steps per rev .5 micro stepping and the machine only travels half the distance that you tell it to. Also the Y and Z axes run backwords and I can't figure out where to go from here. any help would be greatly appreciated. If they are running backwards, you can use a minus sign in front of the scale value, or you can interchange the ends of one winding only either at the motor or at the terminals of the driver package. I don't recall now if you stated what driver package is used, and I'm not familiar enough with the Sherline to know that. If they were xylotex drives, they are setup to default to 8 microsteps, others may be more, or less. This all goes into figuring out the scale value to be used, and it sounds like the driver is set for twice as many microsteps as the software is. The more microsteps, the smoother the motor will move, particularly in its self resonant range, it can make a huge diff in the working torque at those speeds, in favor of the microstepped motor. Here are some 'rules of thumb' 1. 99% of the stepper motors used for this need 200 full steps for one revolution. 2. If the driver microsteps the motor by a factor of 8, then the motor will need to see 200*8=1600 steps for a full turn. Scale this according to the number of microsteps your driver is doing. 3. If the motors are directly driving the screws, and I'm reasonably sure Sherline is, then this 1600 needs to be multiplied by the number of threads per _your_ unit of measure. Eg, if you are running in inches, and the leadscrew in the mill is a 20 tpi screw, then 1200x20=32000 for the scale. 4. Then for MAXVEL, until you know what the machine can actually do, pick something safe like maybe 3, and set a somewhat lower limit for MAXACCEL, 2, 2.5 maybe. Exercise that using the stepconf test facility by giving it a range over which it is to move the motor, say 2 each way, and hit run. If it moves ok, but seems slow and you can hear the motors slowing down and winding up to speed at each end of the moves, increase MAXACCEL and MAXVEL by half a point retry. At some point the motor may freeze and buzz or sing, if the move is well under way when this occurs, reduce MAXVEL by a full point so you have a safety margin under load, but if it does this just as its reversing, then MAXACCEL is too high, reduce it a full point, and move on to do the same thing with the next axis. Practice may find that these will still need to be tweaked one way or the other, but that should get you at least playing in the ballpark. I hope this helps. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Somewhere, something incredible is waiting to be known. -- Carl Sagan - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
On Thursday 24 April 2008, Gene Heskett wrote: On Thursday 24 April 2008, [EMAIL PROTECTED] wrote: Gene Heskett wrote: A bit rough on an obvious newbie, John. In this case, and reading between the lines, I'm guessing that the terminology and format of the questions stepconf is asking are in effect, swahili to the OP, they are quite concise because of the gui's limits. When I ran it the first time, there were several items I didn't get right as the wording was somewhat ambiguous. I'll admit I was a bit rough, and I apologize. But... He will in time learn, if we are willing to help, but first we need to know which question the OP is attempting to derive the answer to. EXACTLY! He didn't say I've done steps 1, 2, and 3, but I'm stuck on step 4. He said give me the numbers. And when John Thornton asked him Which number, he said all of them. I am more than willing to try to help. But the person asking for help has to put in some effort too. Regards, John Kasunich - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/ja v aone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users I've tried putting numbers in like 400 steps per rev .5 micro stepping and the machine only travels half the distance that you tell it to. Also the Y and Z axes run backwords and I can't figure out where to go from here. any help would be greatly appreciated. If they are running backwards, you can use a minus sign in front of the scale value, or you can interchange the ends of one winding only either at the motor or at the terminals of the driver package. I don't recall now if you stated what driver package is used, and I'm not familiar enough with the Sherline to know that. If they were xylotex drives, they are setup to default to 8 microsteps, others may be more, or less. This all goes into figuring out the scale value to be used, and it sounds like the driver is set for twice as many microsteps as the software is. The more microsteps, the smoother the motor will move, particularly in its self resonant range, it can make a huge diff in the working torque at those speeds, in favor of the microstepped motor. Here are some 'rules of thumb' 1. 99% of the stepper motors used for this need 200 full steps for one revolution. 2. If the driver microsteps the motor by a factor of 8, then the motor will need to see 200*8=1600 steps for a full turn. Scale this according to the number of microsteps your driver is doing. 3. If the motors are directly driving the screws, and I'm reasonably sure Sherline is, then this 1600 needs to be multiplied by the number of threads per _your_ unit of measure. Eg, if you are running in inches, and the leadscrew in the mill is a 20 tpi screw, then 1200x20=32000 for the scale. Damn typu's! 1600*20=32000 obviously. 4. Then for MAXVEL, until you know what the machine can actually do, pick something safe like maybe 3, and set a somewhat lower limit for MAXACCEL, 2, 2.5 maybe. Exercise that using the stepconf test facility by giving it a range over which it is to move the motor, say 2 each way, and hit run. If it moves ok, but seems slow and you can hear the motors slowing down and winding up to speed at each end of the moves, increase MAXACCEL and MAXVEL by half a point retry. At some point the motor may freeze and buzz or sing, if the move is well under way when this occurs, reduce MAXVEL by a full point so you have a safety margin under load, but if it does this just as its reversing, then MAXACCEL is too high, reduce it a full point, and move on to do the same thing with the next axis. Practice may find that these will still need to be tweaked one way or the other, but that should get you at least playing in the ballpark. I hope this helps. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) Hedonist for hire... no job too easy! - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] sherline configurations
Message: 3 Date: Thu, 24 Apr 2008 16:13:11 -0400 From: [EMAIL PROTECTED] [EMAIL PROTECTED] Subject: Re: [Emc-users] sherline configurations To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=ISO-8859-1; format=flowed Then, dont call this EMC-users Rather change this to EMC-Developers and have no users. or, if someone doesn't have something positive to say to a rudimentary question then don't participate. A user's list is for exactly that with questions from beginner to advanced. If folks want to complain about rudimentary questions then change the name else you mislead the public. The response to the post in that way was just dead uncouth. Steve Stallings wrote: In defense of John and many of the other long time EMC supporters, it is easy to get frustrated answering questions for people who seem to not be willing to try to help themselves. Newbies in many forums often fail, or seem to fail, to read any of the already available information. Just who are you - [EMAIL PROTECTED] It seems as if Mike is happy. Why continue to beat this dead horse? John's response/retort was VERY effective. It was blunt but EFFECTIVE. The responses led Mike to ask relevant questions. thanks Stuart - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
