Re: [CAD_CAM_EDM_DRO] Maybe OT, reprap build started

----- Original Message -----
From: "Danny Miller" <dannym@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, October 10, 2011 1:01 AM
Subject: Re: [CAD_CAM_EDM_DRO] Maybe OT, reprap build started


> High-performance microcontroller code must often be written in ASM.
> C is not very tight code, and can yield different results under
> different compile conditions when it tries to compile into assembly (no
> microcontroller runs C directly). And this looks like VERY demanding
> execution.
>
> So, it would not be too surprising to me that it would be provided in
> ASM, and I don't see it as indicative of secrecy.
>
> Danny
>
> On 10/10/2011 1:10 AM, Phil@Yahoo wrote:
>> Thank you. I'm not sure whether you refuted or proved my point. To be
>> fair,
>> after my last message I found an 84MB file and downloaded it, which seems
>> to
>> contain everything including the kitchen sink. Lots of stuff written in
>> Java, some in C, and some in probably Arduino lingo. There was one file
>> named thermoplast-direct-drive.asm that does not appear to be
>> human-readable
>> source. Maybe .asm means something else to some folks. I may or may not
>> be
>> able to find what I am looking for in this pile, to wit:
>>
>> 1. How tempreature and feed rate is regulated in RepRap.
>> 2. What sort of protocol is used to control temperature& feed (simple
>> on/off?)
>> 3. Minimum requirements for a 3-axis machine to be used for 3D printing
>> with
>> available CAM software& Mach3 or EMC2.
>> 4. How to minimize the odds of being bitten on the butt if I start
>> building
>> support hardware.
>>
>> I suspect this is sort of a snap-shot dump of available files on some
>> given
>> day, dependent more on who happened to be available to contribute to the
>> pile than on any sort of usability plan. But maybe that has always been
>> the
>> way of all flesh in the open source world.
>>
>> --Phil M.
>>
>> ----- Original Message -----
>> From: "Mike Payson"<mike@...>
>> To:<CAD_CAM_EDM_DRO@yahoogroups.com>
>> Sent: Sunday, October 09, 2011 9:56 PM
>> Subject: Re: [CAD_CAM_EDM_DRO] Maybe OT, reprap build started
>>
>>
>> On Sun, Oct 9, 2011 at 9:41 PM, Phil@Yahoo<yahoo@...>
>> wrote:
>>> Thanks, but those URLs serve only to illustrate my point. For example,
>>> the
>>> "schematic" on the extruder page is actually a picture of a schematic (a
>>> .png file) which shows only the pinouts of the major components of the
>>> board. It does not show how they are interconnected, nor is it complete.
>>> In
>>> short it is useless, a pretense. Same thing for "source code." You can
>>> find
>>> things like test programs to drive the extruder at a constant rate or to
>>> read the thermocouple, but nothing non-trivial. By far the most space is
>>> devoted to instructions on assembling the PCB. This "open source"
>>> project
>>> is
>>> nothing more than a thinly disguised marketing program. Nothing wrong
>>> with
>>> selling, but to do so under false premises is, in my opinion,
>>> despicable.
>>> Technical aptitude or not, a liar is still a liar. (NOTE: I'm not
>>> calling
>>> YOU a liar. I don't know who is behind the false claims. It's a matter
>>> of
>>> principle. It's unethical.) These web pages look at first glance like a
>>> trove of valuable information, but they are really little more than a
>>> sales
>>> pitch. I'll withdraw my assertion when somebody shows me something
>>> substantial that is useful without first buying something from the
>>> promoters.
>> Umm... did you see the section "The Ever-Controversial File Section
>> (These are our sources folks!)". They do provide sources, though as
>> they note they are for a proprietary ECAM program that only works with
>> a single PCB house. While it is not ideal, it is open source. That
>> board design is different, but it is based on the satndard Gen3 (hence
>> "Gen3 remix") so you can also look at the sources for the standard
>> Gen3 boards from Makerbot, which have Eagle files available.
>>
>> That said, virtually everyone in the community will tell you to avoid
>> Techzone, and by all means avoid Gen3 (whether Techzone or Makerbot)
>> at this point because it is horribly obsolete.
>>
>> The two sets of electronics that I recommend are RAMPS and
>> Sanguinololu, both of which provide Eagle files for the board sources.
>>
>> http://reprap.org/wiki/Ramps
>> http://reprap.org/wiki/Sanguinololu
>>
>>
>>> --Phil M.
>>>
>>> ----- Original Message -----
>>> From: "Kevin Martin"<kpmartin@...>
>>> To:<CAD_CAM_EDM_DRO@yahoogroups.com>
>>> Sent: Saturday, October 08, 2011 6:42 AM
>>> Subject: RE: [CAD_CAM_EDM_DRO] Maybe OT, reprap build started
>>>
>>>
>>>> Our extruder is described at
>>>> http://reprap.org/wiki/Wade%27s_Geared_Extruder which is actually one
>>>> of
>>>> the better-documented parts of the printer.
>>>> The electronics are described at
>>>> http://reprap.org/wiki/Generation_3_Electronics/Tech_Zone_Remix
>>>> The individual boards are described in pages linked to from
>>>> http://reprap.org/wiki/Generation_3_Electronics, for instance our
>>>> extruder
>>>> controller 2.2 is described at
>>>> http://reprap.org/wiki/Extruder_Controller_2.2
>>>> The firmware is described at
>>>> http://reprap.org/wiki/Generation3Firmware.
>>>>
>>>> That being said, all the stuff we have is at least a year old, and
>>>> verifying that the above documents (which may refer to more up-to-date
>>>> stuff) are still relevant to us is difficult. For example I thought we
>>>> has
>>>> the )optional) Thermocouple Sensor 1.0
>>>> (http://reprap.org/wiki/Thermocouple_Sensor_1.0) but it turns out that
>>>> our
>>>> thermocouple sensor uses a different chip, one designed for monitoring
>>>> NiMH battery charging. The board circuit is different but the board
>>>> interconnect is the same. A firmware change accounts for the difference
>>>> in
>>>> the data generated by the two thermocouple controllers.
>>>>
>>>> Calibration (or lack thereof) is one of my major complaints about the
>>>> whole field. There are calibration/tuning parameters wired into the
>>>> source
>>>> code, so to adjust them you have to load new firmware. Which requires
>>>> building new firmware. Which requires being absolutely sure you start
>>>> with
>>>> the correct source code for the firmware you already have.
>>>>
>>>> Has anyone make up some tables for ...? Probably yes. Can you find
>>>> their
>>>> results? Maybe. Can you be sure their results are applicable to your
>>>> own
>>>> setup? Thanks to the versioning mess, probably not.
>>>>
>>>> -Kevin Martin
>>>> the Papertrail Handmade Paper& Book Arts
>>>> New Dundee, Ontario
>>>> 518-884-7123
>>>> www.papertrail.ca
>>>>
>>>> -----Original Message-----
>>>> From: CAD_CAM_EDM_DRO@yahoogroups.com
>>>> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Phil@Yahoo
>>>>
>>>> Glad to hear that. So can you share some URLs? I'm not talking about
>>>> drawings for bits of plastic, but about PCB schematics and
>>>> microprocessor
>>>> source code for things like temperature controllers. Also I'm wondering
>>>> how
>>>> to calibrate the extrusion speed to the head motion speed. Has anyone
>>>> made
>>>> up some tables correlating filament size with temperature and extrusion
>>>> speed and nozzle size and head travel speed? That's where the important
>>>> knowledge is if you don't want to re-invent the wheel. Moving things in
>>>> X-Y-Z is the easy part.
>>>>
>>>>
>>>
>>> ------------------------------------
>>>
>>> Addresses:
>>> FAQ: http://www.ktmarketing.com/faq.html
>>> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>>> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>>>
>>> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>>> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>>> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
>>> timg@...
>>> Moderator: pentam@... indigo_red@... davemucha@...
>>> [Moderators]
>>> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>>>
>>> OFF Topic POSTS: General Machining
>>> If you wish to post on unlimited OT subjects goto:
>>> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it
>>> if you have trouble.
>>> http://www.metalworking.com/news_servers.html
>>>
>>> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
>>> sister site to the CCED group, as many of the same members are there,
>>> for
>>> OT subjects, that are not allowed on the CCED list.
>>>
>>> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
>>> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
>>> bill
>>> List Mom
>>> List Owner
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>
>> ------------------------------------
>>
>> Addresses:
>> FAQ: http://www.ktmarketing.com/faq.html
>> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>>
>> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
>> timg@...
>> Moderator: pentam@... indigo_red@... davemucha@...
>> [Moderators]
>> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>>
>> OFF Topic POSTS: General Machining
>> If you wish to post on unlimited OT subjects goto:
>> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it
>> if
>> you have trouble.
>> http://www.metalworking.com/news_servers.html
>>
>> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
>> sister site to the CCED group, as many of the same members are there, for
>> OT
>> subjects, that are not allowed on the CCED list.
>>
>> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
>> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
>> bill
>> List Mom
>> List Owner
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>>
>> ------------------------------------
>>
>> Addresses:
>> FAQ: http://www.ktmarketing.com/faq.html
>> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>>
>> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
>> timg@...
>> Moderator: pentam@... indigo_red@... davemucha@...
>> [Moderators]
>> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>>
>> OFF Topic POSTS: General Machining
>> If you wish to post on unlimited OT subjects goto:
>> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it
>> if you have trouble.
>> http://www.metalworking.com/news_servers.html
>>
>> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
>> sister site to the CCED group, as many of the same members are there, for
>> OT subjects, that are not allowed on the CCED list.
>>
>> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
>> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
>> bill
>> List Mom
>> List Owner
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>
>
>
> ------------------------------------
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@...
> Moderator: pentam@... indigo_red@... davemucha@...
> [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it
> if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
> Yahoo! Groups Links
>
>
>