Re: [Emc-users] rust inhibitor

On 24.08.25 11:33, fxkl47BF--- via Emc-users wrote: > On Sun, 24 Aug 2025, Andy Pugh wrote: > >> On 24 Aug 2025, at 01:43, andrew beck < andrewbeck0...@gmail.com > wrote: > >> There is the forum and Facebook group now too > > There is also the IRC and Discord (which are linked so messages to on

Re: [Emc-users] rust inhibitor

On 21.08.25 20:24, fxkl47BF--- via Emc-users wrote: > this product was recommended in an article i read > does anyone here have any experience with it > https://www.fluidfilm.de/fluid-film-nas-2/ Lanolin has been used for generations for rust prevention, not least on sawbench and planer tables

Re: [Emc-users] Any spare 8i20 drive?

On 09.07.25 22:09, Viesturs Lācis wrote: > pirmd., 2025. g. 7. jūl., plkst. 19:17 — lietotājs gene heskett > (< ghesk...@shentel.net >) rakstīja: > > Electrolytic caps should always be used at 90% of rated voltage or even > > higher., a 16 volt cap used in a 3.3 volt circuit has a failure time

Re: [Emc-users] OT- detection of drive belt slippage

On 07.06.25 19:51, Chris Albertson wrote: > Is the tension on a slipping belt higher than just before it slips?   It > might be less > After all, the slipping belt has stopped transmitting torque.    This is the > real question > I’ve never measured. There is: Static friction: Friction witho

[Emc-users] Modbus primer [Was: Re: Homann Designs ModIO

On 06.02.20 12:01, Kirk Wallace wrote: > I am currently building an off-grid solar generation and storage system > which have controllers using Modbus, so I may be active with Modbus again > soon. If so, I will try to address your issues below and add any new > information to the LinuxCNC wiki as I

Re: [Emc-users] Open source CNC architecture

On 04.02.20 10:09, Jon Elson wrote: > On 02/04/2020 09:17 AM, Stuart Stevenson wrote: > > Aside from the stress and consternation in the LinuxCNC world about the > > logo I like the new name a lot better. > Yes, unless you have to type the longer name 20+ times a day! Any good text editor will hav

Re: [Emc-users] sorting out how to run xz -z

On 26.01.20 02:44, Gene Heskett wrote: > Greetings all; > > trying to sort out how to do this with xz > > xz -c -k output-file.xz > > The manpage sucks, and is totally silent on i/o rediirection. This seems to work: $ xz -c /etc/issue > /tmp/fred.xz $ file !$ file /tmp/fred.xz /tmp/fred.xz: XZ

Re: [Emc-users] Real-time OS for machine controllers

On 25.01.20 14:41, Alan Condit wrote: > If you are running 6 axis on the $5 chip then you have all the wiring > complexities that we have now. The $5 chip is ideally suited to a distributed implementation with simplified wiring - power, high speed serial, and a synchronising clock to keep axes ali

Re: [Emc-users] Real-time OS for machine controllers

On 24.01.20 20:27, Alan Condit wrote: > Chris, > > If I send 1 steps to a smart X-axis controller, how does it stay in sync > with a smart > y-axis controller without someone controlling the synchronization between the > two? One way could be for the host to pulse the x and y step pins in s

Re: [Emc-users] Erik Chrstiansen, the Aussie?

On 18.01.20 00:08, Gene Heskett wrote: > With all the fires down under, he hasn't posted since 12 October. > > Wondering if he and his new place is ok? Many thanks, Gene, for the thoughts. (I only come back to town, and the internet two weekends per month, while trying to push the build along -

Re: [Emc-users] Spindle Speed Control.

On 05.10.19 15:20, John Dammeyer wrote: > > > > I�m using PWM with a direct signal and enable.My drive accepts 0-10V, > > so I > > created a little board that converts the PWN to a 0-10V analog signal and > > isolates all the signals. > > > > N. Christopher Perry > > That's basically what I

Re: [Emc-users] Real time data write to file, unexpected real time delay

On 22.07.19 18:48, Nicklas Karlsson wrote: > Algorithm data is filled in a round buffer and sending/saving process > should send/save the tail in not to small blocks. One counter for > filling and one for sending/saving should do the trick. Atomic > increment including overflow should solve the pro

Re: [Emc-users] Spindle experiences/recommendations?

On 26.06.19 08:14, Gregg Eshelman via Emc-users wrote: > I've read that centripetal force is "pushing inward" which sounds like > utter baloney to me. When anything is spinning, nothing is pushing > inward. It's easiest to analyse with a simple example, e.g. a nut tied on the end of a string, whic

Re: [Emc-users] Spindle experiences/recommendations?

On 25.06.19 09:54, Chris Albertson wrote: > On Tue, Jun 25, 2019 at 7:34 AM andy pugh wrote: > > > On Tue, 25 Jun 2019 at 14:27, Gene Heskett wrote: > > > > > Absolutely. And in the ER32's turning 3G's max in my G0704's abused > > > spindle, balance is not a prime concern, but in an ER20 where y

Re: [Emc-users] Spindle experiences/recommendations?

On 25.06.19 04:02, Gene Heskett wrote: > Perhaps you have forgotten that the ER style nut is a lng ways from > symmetrical internally? > > My guess is that the spindle is balanced w/o the nut, and that the nut is > separately balanced. Or should be... +1. The angular position of the tighten

Re: [Emc-users] LinuxCNC Processor

On 17.06.19 11:18, Chris Albertson wrote: > On Mon, Jun 17, 2019 at 2:08 AM Erik Christiansen > wrote: > > > > > Since my Udoo X86 went wobbly, I'm looking for a new youtube machine. > > (The video breaks up after ten minutes of running, without the > >

Re: [Emc-users] LinuxCNC Processor

On 16.06.19 13:56, Chris Albertson wrote: > The Pi3+ has considerable faster CPU performance vs. the BBB. Also twice > the RAM and good built-in WiFi. > Yes the Pi's Ethernet has limited bandwidth but how much is required?In > the old days people were using parallel ports on PCs and they have

Re: [Emc-users] Increasingly OT: [Was: Re: How come.... --> battery safety due to high current, DC relay

On 26.05.19 13:07, Dave Cole wrote: > There are some good reasons to use a 24 or 48 volt DC bus power system for > smaller systems. > The chance of electrocution is pretty low for a 48 volt DC system in a dry > environment. > Once you get above 50 volts or so things change. Here in Oz, a "suitably

Re: [Emc-users] Increasingly OT: [Was: Re: How come.... --> Low voltage system

On 27.05.19 20:44, Chris Albertson wrote: > The low volts significantly raise the cost. I remember buying wire (some > years ago) for a system on my sailboat and paying $5 per foot. > > OK, I just looked up the cost of wire that is suitable for a 4KW low volt > system. Home Depot sells a 12 foot

Re: [Emc-users] How come....

On 26.05.19 12:48, Dave Cole wrote: > > We still use BTU's for small Furnace and Air Conditioner sizing... > For larger units its BTUs for furnaces and Tons of cooling for Air > Conditioners. The BTU is almost metric (within 6%): $ units You have: 1 btu You want: kJ * 1.0550559 Polish a

Re: [Emc-users] Lead acid batteries --> Redox flow batteries

On 18.05.19 21:53, Nicklas Karlsson wrote: > It might be worth looking a redox flow batteries, if they are > available in suitable size somewhere. I think number of cycles and > service life is good but did only spent a minute or so looking. I > would expect they are a particularly good solution fo

Re: [Emc-users] How come....

On 21.05.19 16:17, grumpy--- via Emc-users wrote: > i have no knowledge to add to this subject but it is all very good > info for possible future projects i have been waiting for someone to > add saltwater batteries to the discussion The battery survey at one of the two links in my post on another

[Emc-users] Increasingly OT: [Was: Re: How come.... --> battery safety due to high current, DC relay

On 21.05.19 00:31, Chris Albertson wrote: > On Mon, May 20, 2019 at 7:55 PM Erik Christiansen > wrote: > > > > > Switching normal loads is back to less than 100 A for less than 5 kW, but > > still hard on contacts. (The contacts on the starter solenoid for an old >

Re: [Emc-users] How come.... --> battery safety due to high current, DC relay

On 20.05.19 12:11, Chris Albertson wrote: > How much DC current are we talking about?Let's say the house is running > an air conditioning load and you are doing laundry and the 'fridge is > cycling and you have a few computers on and every light build is turned on > and you own a 200-gallon sal

Re: [Emc-users] How come.... --> battery safety due to high current, DC relay

On 19.05.19 09:43, Nicklas Karlsson wrote: > For safety I learned relays fail open circuit while MOSFETs fail short > circuited, I also experienced MOSFET short circuit failure. Happen to > know anything more about this? I'd only use the MOSFETs to replace relay contacts, and wire a HRC fuse in se

Re: [Emc-users] How come....

On 20.05.19 02:02, Chris Albertson wrote: > Total KWH meant if you have a 10 KHW battery and you chrage and discharge > it 200 times then you have 2000 "lifetime" KHW > If you can charge the battery 400 times then you have 4000 "lifetime KWH. > The second battery as twice as much value. As a firs

Re: [Emc-users] How come....

On 16.05.19 21:18, Nicklas Karlsson wrote: > > ... > > I'd put the battery bank in an outbuilding.  If something shorts out and > > the battery bank melts down, the little building may burn but my house > > won't. > > There certainly is a lot of power from a byttery and it could be a > little bi

Re: [Emc-users] How come....

On 16.05.19 23:25, andy pugh wrote: > On Thu, 16 May 2019 at 23:07, Chris Albertson > wrote: > > > > ill never beat Tesla's price. Even if you build a factory and mass > > produce them > > > So, let's turn that on its head. How can I run my cordless tools from Tesla > cells... IIRC, the indi

Re: [Emc-users] How come....

On 09.05.19 09:16, Gene Heskett wrote: > Good thinking Erik. I suppose the next Q is how far down is it to the > water table? And thats a job for a wind mill tower... But you knew > that. What would be neat is a big remote switch rod running up the tower > to a clutch to disconnect the wheel f

Re: [Emc-users] How come....

On 09.05.19 10:24, Dave Cole wrote: > > Erik, > > Do you have a blog going on your build? Now that's an idea. All I've started is the seeds of an article for "Owner Builder" magazine - the editor was interested when we last spoke. > I'd be very interested in your solar and battery setup for yo

Re: [Emc-users] How come....

On 09.05.19 09:58, Peter Blodow wrote: > there has been no incoming mail since May 6th? > Peter I was about to facetiously venture "Perhaps because Gene's been busy over on debian-user?", but there was a whole thread on: >From emc-users-boun...@lists.sourceforge.net Tue May 7 13:03:40 2019

Re: [Emc-users] Posting order

On 08.04.19 00:37, John Dammeyer wrote: > I doubt anyone writing software would like to have only a black > proportional font in their program text editor. Yet we tolerate it > for emails. John, I've earned a fat living for 30 years writing software, and still do a little for recreation. There, a

Re: [Emc-users] Posting order

On 08.04.19 05:04, Gene Heskett wrote: > On Monday 08 April 2019 02:36:49 Erik Christiansen wrote: > > Granted, excessive quoting is too common on most lists. A good MUA > > does much to ameliorate the issue, though. In mutt, 'S' skips quoted > > text to the next bl

Re: [Emc-users] Posting order

On 08.04.19 07:55, Roland Jollivet wrote: > I've thought about this, and don't agree. If people are following this > conversation, then it is fresh in their mind, and it's very easy to read > this post. Err, Roland, if "it is fresh in their mind", why fullquote my entire post in your reply? Does t

Re: [Emc-users] Posting order

On 31.03.19 11:17, John Dammeyer wrote: > > > A: No. > > Q: Should I include quotations after my reply? > > > > A: Because it messes up the order in which people normally read text. > > Q: Why is top-posting such a bad thing? > > A: Top-posting. > > Q: What is the most annoying thing on usenet an

Re: [Emc-users] Rock64 pre-orders on Banggood.

On 26.03.19 07:10, Alan Condit wrote: > Erik, > > Banggood is only one of the places selling the rock64. Look at Pine64’s > website and google “rock64 stretch” > There is an Armbian Stretch image available for download. > > Ala Many thanks, Alan. That price is unbelievable. I guess the "4K60P HD

Re: [Emc-users] switch debounce experiment

On 26.03.19 10:38, Chris Albertson wrote: > A very basic question, unlike the hards ones being discussed here but, > important I think. > > How are people handling switch debouncing on home and limit switches? > > Always in the past, I have treated the microswitch is a SPST device that is > eithe

Re: [Emc-users] Rock64 pre-orders on Banggood.

On 26.03.19 02:08, andy pugh wrote: > Most of them seem to need a kernel specifically patched for the > hardware, though. So you need (for example) the Udoo-patched kernel > then need to apply Xenomia / RTAI / Preempt-RT on top of that. > And often the fit is not exact. Thought I'd order one, unti

Re: [Emc-users] EDA Software (Was: ConFusion 360)

On 23.03.19 21:37, andy pugh wrote: > On Sat, 23 Mar 2019 at 21:32, Jon Elson wrote: > > > I inherited the CRAMPS board from Charles Steinkuehler, > > which he designed in Kicad. While Kicad is not quite up to > > the level of Protel99, it definitely is getting close. > > The STMBL project uses

Re: [Emc-users] Cheap vs expensive solar Re: OT: Where's them fires. [Was: Re Conversational mode.

On 11.03.19 10:48, Chris Albertson wrote: > Another option. Here in So Calif on the "west side" home prices start > at about $1M. So the math works differently from say Rural Oklahoma. > A $25,000 electrical system only adds 2.5% to the price of the home > and less percent to the more expensive h

Re: [Emc-users] Cheap vs expensive solar Re: OT: Where's them fires. [Was: Re Conversational mode.

On 11.03.19 18:34, Nicklas Karlsson wrote: > On Mon, 11 Mar 2019 09:19:48 + (UTC) > Gregg Eshelman via Emc-users wrote: > > > This guy in Australia tested a cheap $90 100 watt panel and one that > > cost a lot more. The $90 panel significantly out performed the > > expensive panel.https://www

Re: [Emc-users] Cheap vs expensive solar Re: OT: Where's them fires. [Was: Re Conversational mode.

On 11.03.19 15:02, Peter Rosenblom wrote: > Den mån 11 mars 2019 12:10Erik Christiansen skrev: [full quote of my post, but nothing else.] Peter, I expected that the second post, a minute after the first, would correct the omission of any text from you, but there's still nothing. I hope you manag

Re: [Emc-users] Cheap vs expensive solar Re: OT: Where's them fires. [Was: Re Conversational mode.

On 11.03.19 09:19, Gregg Eshelman via Emc-users wrote: > This guy in Australia tested a cheap $90 100 watt panel and one that > cost a lot more. The $90 panel significantly out performed the > expensive panel.https://www.youtube.com/watch?v=3-sc4rlV93g Commenters > noted that the cheap panel is usi

Re: [Emc-users] OT: Where's them fires. [Was: Re Conversational mode.

On 10.03.19 21:24, Rafael Skodlar wrote: > Only profiteers that pay off soviet style politicians. You want a "solar > company" to use your roof rent free and claim you have a profit? What about > roof leaks, Here in Australia factory painted galvanised steel sheet roofing is popular in rural area

[Emc-users] OT: Re: Fixing the deserts.

On 10.03.19 20:02, Marshland Engineering wrote: > Hi Erik > > I know you are up to eyeballs at the moment, but here is a really interesting > TED talk. > > https://www.ted.com/talks/allan_savory_how_to_green_the_world_s_deserts_and_reverse_climate_change#t-1320745 Either my one HDMI monitor has

Re: [Emc-users] OT: Where's them fires. [Was: Re Converational mode.

On 10.03.19 02:40, andy pugh wrote: > On Sat, 9 Mar 2019 at 17:55, Gene Heskett wrote: > > > Electricity could with the right push, be solar. It is increasingly so in Australia, Gene. The nascent multi-billion push to build pumped hydro storage, a decade earlier than thought likely, is because t

Re: [Emc-users] OT: Where's them fires. [Was: Re Converational mode.

On 09.03.19 11:54, Nicklas Karlsson wrote: > You are mining coal in Australia maybe you would be better of turn > some of the combustible material to bio fuel? Spot on. The Black Saturday fires released the energy of 1500 Hiroshima bombs. As an individual, I can do at least three things: Continue

[Emc-users] OT: Where's them fires. [Was: Re Converational mode.

On 09.03.19 22:06, Marshland Engineering wrote: > Hi Erik > > Where do you live? Excuse me for being so ignorant on current news but I just > don't watch it any more. Too much baloney !!! I can only assume California or > Aus. Victoria, Australia. (Dandenong Ranges, on eastern fringe of Melbour

Re: [Emc-users] Re Converational mode.

On 07.03.19 14:52, Marshland Engineering wrote: > Some of the parts I make > > http://www.marshland.co.nz/ftp/Misc/Parts.JPG > http://www.marshland.co.nz/ftp/Misc/Machining.JPG > http://www.marshland.co.nz/ftp/Misc/Pendant.JPG Thanks for the parts porn - it's encouraging when the slab for my new

Re: [Emc-users] Can bus query

On 02.03.19 13:18, Roland Jollivet wrote: > I have come across a number of 24VAC traction motors from BT pallet > lifters. About 4kW > > They use a controller that runs off a canBus. There is no encoder on the > motor. > These are not Servo drives as such, but can drive the motor in voltage or > t

Re: [Emc-users] Easy use of a 2 line URL [Was: Re: DIY CNC builder dilemma, open request for comments

On 19.02.19 07:32, Gene Heskett wrote: > On Monday 18 February 2019 23:57:28 Erik Christiansen wrote: > > > On 18.02.19 22:47, Gene Heskett wrote: > > > Already set true here Erik. Next? ;-) > > > > And it didn't take the lumpy URL when pasted whack in the m

Re: [Emc-users] Easy use of a 2 line URL [Was: Re: DIY CNC builder dilemma, open request for comments

On 18.02.19 22:47, Gene Heskett wrote: > > > Already set true here Erik. Next? ;-) And it didn't take the lumpy URL when pasted whack in the middle of the screen? (Dunno that I have any other magic settings. That one works here.) Erik ___ Emc-users ma

[Emc-users] Easy use of a 2 line URL [Was: Re: DIY CNC builder dilemma, open request for comments

On 18.02.19 16:52, Gene Heskett wrote: > unforch, John, you did not surround this link with a pair of<> which > would have preserved its validity even if it had been 2k chars long, but > alibaba, rather than leaving half of it displayed so we can manually > copy/paste the rest of it, has to be c

Re: [Emc-users] Would this blower be usefull as a low pressure mister for this 6040

On 16.02.19 11:47, Andy Pugh wrote: > > > > On 16 Feb 2019, at 09:21, Erik Christiansen wrote: > > > > as lb/in^2 isn't right > > It can be, if you measure oil consumption in slugs. True ... but then a slug is lbf s^2 / ft, and I have enough trouble

Re: [Emc-users] Would this blower be usefull as a low pressure mister for this 6040

On 15.02.19 20:46, Gene Heskett wrote: > I found a 12 volt 1/4" version, but what the heck is > Operating pressure 0.15~0.8MPa supposed to tell me??? Need a translation > from chinglish please. I haven't a clue what the heck 0.8MPa means. OK, it's been answered for that number, but for catching t

Re: [Emc-users] OT note to Erik C - Solar batteries

On 13.02.19 12:04, Chris Albertson wrote: > On Tue, Feb 12, 2019 at 5:07 PM Greg Bentzinger via Emc-users < > emc-users@lists.sourceforge.net> wrote: > > > > > The shop will always have to be on the grid, the big CNC's have 26Kw or > > higher startup loads. If the house is off grid then my electri

Re: [Emc-users] OT note to Erik C - Solar batteries

On 13.02.19 01:05, Greg Bentzinger via Emc-users wrote: > A trend I have been noticing in the DIY solar crowd is to salvage the > batteries from wrecked Tesla or Mercedes Hybrids. The Batteries are > series wired for output in the 400VDC range but can be rewired in > parallel for a 50-60VDC output.

Re: [Emc-users] Would this blower be usefull as a low pressure mister for this 6040?

On 12.02.19 04:50, Gene Heskett wrote: > Looking at fleabay, I find, for about $12, what looks like a centrifigal > 12 volt blower, rated at 380L a minute for blowing up air mattresses > etc. Rated pressure is 3800pa, but that doesn't readily translate into > how much or how well it would blow,

Re: [Emc-users] Taming docx files. [Was: Re: 1.5 kw vfd in 6040 problems

On 30.01.19 05:17, Gene Heskett wrote: > Watch the heat down there Eric, I'm hearing reports of above 40C from > your neck of the woods. Thats killer heat. Do what we call swamp > (evaporative) coolers help? It was 45°C when I was out on the farm last Friday, fortunately a one off, and better t

[Emc-users] Taming docx files. [Was: Re: 1.5 kw vfd in 6040 problems

On 28.01.19 11:49, Gene Heskett wrote: > The guy is still dragging his feet on english docs in a pdf format for > this thing though. Docx is damned sure a looser IMNSHO. Even the latest > 6.1.4 version of LibreOffice can't render it in a usable format. Dunno how 'orrible a plain text rendition f

Re: [Emc-users] Nice manual lathe in WA (assume WA USA not WA AU)

On 26.01.19 14:22, andy pugh wrote: > On Sat, 26 Jan 2019 at 05:39, andy pugh wrote: > > > https://www.gumtree.com.au/ > >

Re: [Emc-users] Backup practice [Was: Re: color me pissed

On 15.01.19 10:22, Chris Albertson wrote: > On Mon, Jan 14, 2019 at 4:36 PM Erik Christiansen > wrote: ... > > > > In reality, there's always more than one way to eat an elephant, so > > there's no real need to complicate life by making backups a growing >

[Emc-users] Backup practice [Was: Re: color me pissed

On 14.01.19 10:16, Chris Albertson wrote: > Here are the classic failures: > > 1) You have a "backup drive" the mirrors all your data. SO after > spending a few hours edits files yu save the file but the software has > a bug and writes a corrupted file to disk. the yo "backup" the file > and

Re: [Emc-users] delete

On 12.01.19 16:31, a k wrote: > so > x@debian: rm home/x/desktop/linuxcnc/m304b > > file that need to delete m304b > also, some file in directory start linuxcnc -- open- file -- show with > extention .txt some does not show any extention. > is file name only that what show up? To see what is

[Emc-users] Pacemakers [Was: Re: G10 L2 R-90 isn't working?

On 10.01.19 12:53, Gene Heskett wrote: > Now its Thursday and, I'm back from the body shop, typeing a little > slower, and sorer and with a foreign object in my chest. A pacemaker. So > you haven't gotten rid of me yet. :) Mentally I think I'm OK, but I'm > under orders to not drive for about a

Re: [Emc-users] Cutting square holes: Tap Hats [Was: Re: More on er-20 stuffs

On 11.05.18 14:28, andy pugh wrote: ... > Though, actually, what I would do is cut a slot in the top and rely on > two flats only to do the work. That one appeals a lot from the manufacturing viewpoint. It is quicker and probably as strong as the 4 grubscrews I used in the original taphats. It too

Re: [Emc-users] question on progress of addf survey tool.

On 21.11.18 18:37, Nicklas Karlsson wrote: > > We need a utility that detects out of order addf's, each of which then > > causes a one thread execution delay in the data traveling that path. > > Data from a limit/home switch to use a real simple circuit, should be > > present at the motion input

Re: [Emc-users] question on progress of addf survey tool.

On 19.11.18 19:41, Gene Heskett wrote: > On Monday 19 November 2018 14:28:14 Nicklas Karlsson wrote: > > > We need a utility that detects out of order addf's, each of which > > > then causes a one thread execution delay in the data traveling that > > > path. Data from a limit/home switch to use a r

Re: [Emc-users] stepper driver

On 26.08.18 04:51, Gene Heskett wrote: > On Sunday 26 August 2018 03:14:42 Erik Christiansen wrote: > > For small steppers, I'd rather spend half the money on a BED: > > > > https://www.sparkfun.com/products/12859 > > > > which admittedly will only do 2

Re: [Emc-users] stepper driver

On 25.08.18 11:54, gru...@manlymail.net wrote: > has anyone tried this > > https://www.sparkfun.com/products/13752 Nope, and at that price, I'm really not likely to. OK, maybe there's a convenient way to talk SPI to the thing, but what worries me is that it will "autonomously execute movement com

Re: [Emc-users] frank hermann xatc extremely simple automatic tool changer

On 17.07.18 12:00, Gene Heskett wrote: > On Tuesday 17 July 2018 10:00:36 andy pugh wrote: > I'm much more familiar with something like lb/ft, how do I translate that > into what I am currently tightening the er20 nut to?, which I'd estimate > at 50+ lb/ft. So mentally I can't compare that to 80N

Re: [Emc-users] frank hermann xatc exteremely simple automatic tool changer

On 17.07.18 11:38, TJoseph Powderly wrote: > I have not seen this mentioned on the list. > Its interesting enough, esp after i tried opening and closing my collets > with quarter turn. > > "people is so clever" > > https://hackaday.com/2016/06/20/hackaday-prize-entry-diy-automatic-tool-changer/ >

Re: [Emc-users] Grounding

On 12.07.18 15:33, John Dammeyer wrote: > So what happens when the equipment with the 24V supply is 30m long in > multiple steel frames? There would be a bonding wire from frame to > frame since you wouldn't want to bond one end to one AC ground outlet > and the other end to a different AC ground

Re: [Emc-users] no news any more?

On 08.07.18 08:42, Gene Heskett wrote: > On Sunday 08 July 2018 08:33:17 Ken Strauss wrote: > > > Here in Canada (southern Ontario) I have received nothing for a week > > or more. > > > I sort developers and uses to the same folder. On scrolling back up the > list, it appears the last msg from us

Re: [Emc-users] Raspberry Pi PREEMPT-RT

On 23.06.18 06:53, Gene Heskett wrote: > On Saturday 23 June 2018 05:39:12 andy pugh wrote: > Did I mention that usb-2, pi version, is slow yet? 749 megs to write, its > making 367 bytes a second. I may as well send this and go back to bed. > More news next month maybe? ;( Yeah, July 17th at t

Re: [Emc-users] tap hats again

On 22.05.18 04:55, Gene Heskett wrote: > On Tuesday 22 May 2018 00:51:08 Erik Christiansen wrote: > > > On 21.05.18 22:19, Gene Heskett wrote: > Thanks Erik. Writing about this makes me think of better ways to do it. Yep, thoughts can stay in a groove if not nudged. All that I w

Re: [Emc-users] tap hats again

On 21.05.18 22:19, Gene Heskett wrote: > Greetings all; > > The first "tap hat" is done, and has a 5mmx.8 tap mounted in it. When the box of 10 different grubscrews arrived, it seemed like a good idea to write the size and _pitch_ over each compartment, on the transparent lid. That saves time lat

Re: [Emc-users] makeing tap hats, from brass rod

On 19.05.18 21:41, Gene Heskett wrote: > I have all these brass slugs fixed so they are keyed into a scallop in > the edge of a 7/8" R8 collet that fits the head of a 4mm capscrew in the > lower end of the slug. So the next operation is to set it into the > spindle, and position it so the rotati

[Emc-users] Very low backlash ballscrews [Was: Re: How does this work?

On 19.05.18 23:25, Chris Albertson wrote: > Ball screws have gotten cheap enough now that I'm putting one on a $500 > Harbor Freight mill. I paid abut $30 for a very good 16mm diameter by > 500mm long zero backlash ball screw and nut. Yes truly "zero" there seem > to be two ball nuts working in

Re: [Emc-users] Tap Hats [Was: Re: More on er-20 stuffs

On 11.05.18 07:42, Gene Heskett wrote: > On Friday 11 May 2018 03:32:39 Erik Christiansen wrote: > A box or three of grubscrews off fleabay won't add up > > to much cost. The last boxful I bought was M3 to M10, IIRC. You might > > do better buying plastic bags of

[Emc-users] Tap Hats [Was: Re: More on er-20 stuffs

On 11.05.18 01:25, Gene Heskett wrote: > On Thursday 10 May 2018 22:23:56 Erik Christiansen wrote: > > But, whoa. I'm also not fully across the need for bore adjustment. As > > taps are ground from a few stock sizes, only those few sizes of tap > > hat bore are needed. W

Re: [Emc-users] More on er-20 stuffs

On 10.05.18 19:02, Gene Heskett wrote: > Anyway, I've made a box that can corral 100 of the "tap hats", all of > which now have a 4mm cap screw in the side, whose head matches the slot > I cut in the lip of the 7/8" R8's. So that problem is partially > addressed. That's one R8 collet for each s

Re: [Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

On 25.04.18 10:20, Jon Elson wrote: > On 04/25/2018 04:48 AM, Erik Christiansen wrote: > > As mentioned upthread, a linear regulator wastes power. But cheap > > switchmode power supplies tend to radiate RF, and wipe out radio > > reception in my remote rural location. >

Re: [Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

On 25.04.18 09:28, Chris Albertson wrote: > My guess is that there are already close to 30 active switch mode power > supplies in your house. Chris, both your posts are pure assumption and baseless supposition, taking little or no heed of the information I presented. The only SMPS in the off-grid

Re: [Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

Late reply - just back from a week off-net. On 17.04.18 11:49, Lester Caine wrote: > But thinking about the 'off grid' situation, a 12V battery with a low > dropout regulator could provide lights efficiently. While bigger > appliances need 'mains', quite a number around here are also 12V > powered

Re: [Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

On 17.04.18 03:14, Chris Albertson wrote: > If you are thinking about LED lighting, don't try and replace incandescent > bulbs. That works and is what people do but if you are building from > scratch yu design the LEDS into the architecture.The most obvious > example is to place them under the

Re: [Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

> Thanks Erik. Some of the above I've not heard about till now, like the > salt water battery. And its sounding like costs are coming down, just > not fast enough to do me a lot of good. The brand is Aquion, and there's a blurb here: https://www.youtube.com/watch?v=1EhnmWo2CZ8 I kept the URL, b

Re: [Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

On 16.04.18 09:53, Chris Albertson wrote: > > > > I'm also looking at a camping fridge with phase-change material inside > > the insulation. That only needs power for a couple of hours in the > > morning, and again in the afternoon, so does not load the batteries if > > there's sun. > > > > Not a

[Emc-users] Going off-grid [Was: Thinking about going off-line eventually.

On 15.04.18 19:40, Gene Heskett wrote: > Greetings all; > > I see Banggood has a 500 watt wind thingy for under $200 that net folks > are calling professional grade stuff. I am looking to put up an > anerometer to record the wind speeds, one of those 3 cups designs that > isn't direction sensit

Re: [Emc-users] Mastering mixed units [Was: Re: Large servo selection

On 12.04.18 04:02, jeremy youngs wrote: > You just invoke $ units in terminal and punch the conversion you want ? > That's awesome Yup, it is awfully convenient, e.g.: # For stepper motors: You have: 280 oz force in # There's no "ozf". You want: N m

[Emc-users] Mastering mixed units [Was: Re: Large servo selection

On 11.04.18 15:08, John Kasunich wrote: > On Wed, Apr 11, 2018, at 10:30 AM, David Berndt wrote: > > I'm looking to output about 1000lbf in a linear direction via a > > crank/slider or ballscrew with peak speed of about 1m/s. So that's a real > > 5hp of energy. > > Mixed units are making my h

Re: [Emc-users] Link to SeeedStudio's rar file [Was: Re: SeeedStudio .dru file won't extract from archive

On 10.04.18 07:59, Mark wrote: > On 04/09/2018 11:37 PM, Erik Christiansen wrote: > > I'll attach the files which Heinz sent, so none of us have to struggle with > > the M$ .rar archive. > > Huh.  Just downloaded the .rar fil from seeed and ran 'unrar e' on

[Emc-users] PCB CAD interface learning curves [Was: Re: SeeedStudio .dru file won't extract from archive

On 09.04.18 13:29, andy pugh wrote: > On 9 April 2018 at 04:37, Erik Christiansen wrote: > > > Having invested much effort in warping my brain to work with Eagle, I'm > > reluctant to endure similar pain with Kicad. > > There may be more pain with KiCAD. It

[Emc-users] Link to SeeedStudio's rar file [Was: Re: SeeedStudio .dru file won't extract from archive

On 09.04.18 08:19, Mark wrote: > Erik, > > Got a linky to that rar file? Yup, it's in the FAQ off Lawrence's original link, i.e.: http://support.seeedstudio.com/knowledgebase/articles/422482-fusion-pcb-pcba-order-submission-guidelines "DRU for 2-layer board" under "3. Design rules" / "Eagle" do

[Emc-users] SeeedStudio .dru file won't extract from archive [Was: Re: (no subject)

On 07.04.18 23:00, Lawrence Glaister wrote: > I now use kicad for the schematic and pcb design and an open source program > called pcb2gcode to convert gerbers to gcode files for linuxcnc. I just > completed a board I sent off to https://www.seeedstudio.com/fusion.html for > production. Smooth as s

[Emc-users] Diagnosing apparent write failure [Was: Re: head scratcher

On 08.04.18 17:40, Gene Heskett wrote: > Putting the final touches on a routine to tap a 4mm.70 hole, and geany > says it is saving the changes, by removing the red text for normal text > in its header bar, but I'm leaving the file open in geany, and going > back to lcnc, which also goes thru th

Re: [Emc-users] Tap Hat photo

On 07.03.18 05:45, Gene Heskett wrote: > On Wednesday 07 March 2018 02:00:46 Erik Christiansen wrote: > > To go in a collet, you wouldn't need the fat splined adapter to take > > the die holder. I can take this one off as it's only held on with > > grubscrew

Re: [Emc-users] Where are you getting R8 square collets for driving taps?

On 07.03.18 00:58, Gene Heskett wrote: > And the grub screws stayed tight? Yup, but that was only hand tapping. A bit of Loctite would be good insurance when rigid tapping. > The die holder I'd have to make as all mine are handled for 2 handed > use. The die holder was only needed because I made

Re: [Emc-users] Where are you getting R8 square collets for driving taps?

On 06.03.18 23:05, Gene Heskett wrote: > It appears that its well nigh impossible to get a firm enough grip on a > tap shank, and on the smooth, unkeyed TTS ER-32 holder, to reliably lock > a tap for rigid tapping. I've considered buying ER-32's with square > sockets, but for >8mm taps, the TTS

Re: [Emc-users] email failures.

On 03.03.18 12:43, Chris Albertson wrote: > I'm I the only one having problems sending email to the list server at > Source Forge?There seem to be all kinds of assorted issues at the > Source Forge end. missing DNS entries, server going off line. The > EMC username being "unknown" and some ot

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