Re: [Emc-users] webrtc as remote control
webrtc is spec's for about 1 second round trip time. This would be hugely annoying to use. Unacceptable lag.But one second is the worst case and you would be FAR better than that if you have a small network all contained one room with only two devices connected. I think yo might do better NOT using webrtc and going with just the underlaying protocol "RTP". I don't see what the webrtc layer buys you over RTP. Any brewers that supports webrtc must support RTP I've read and it is backed u with experience that you need latency LESS THAN 50 ms if you want it to be mostly undetectable by humans.RTP is a lite layer one just lain old UDP so it might have a fairly quick best case time. I'm guessing you want to use this so you can use a phone or tablet as a wireless pendent controller.RTP might work but your phone/tablet also has other radios on it that might offer lower latency. Blue Tooth comes to mind. BT works well enough to be used as a mouse and keyboard. My BT based devices have zero perceicable lag. I'd defiantly go with BT over WiFi for a controller. On Thu, Jan 25, 2018 at 3:27 PM, theman whosoldtheworld < bleachk...@gmail.com> wrote: > I not analize timing performances of webrtc app ... but someone think is > possible use webrtc tecnology as remote Lcnc control? I think at qt app > that send array data over rtc protocol ... not well think about mechanism > ... actually I'm only impressionate about video calling latency > performances sometime better than direct pc capture. At last an image > is only a bi-dimensional array, So a mask may be a simply way to decode the > signal. > > I remember a work of Sir. Kuminski about quik tecnology > > bkt > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] non-contact position sensors, surprisingly good performance.
Part numbers? > -Original Message- > From: theman whosoldtheworld [mailto:bleachk...@gmail.com] > Sent: January-25-18 3:17 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] non-contact position sensors, surprisingly good > performance. > > normally i use omron or panasonic micro photocell ... 0.05mm precision of > positioning, hight performances of repetitions, hight vibration resistance, > low cos, and possibility of shielded chain type cable, or connectors > automotive 4 pin type. Not 2USD, but 19USD for 3meters cable type, or 9USD > for connectors type. > > bkt > > 2018-01-25 21:20 GMT+01:00 Ken Strauss : > > > > > > > > -Original Message- > > > From: Nicklas Karlsson [mailto:nicklas.karlsso...@gmail.com] > > > Sent: Thursday, January 25, 2018 2:55 PM > > > To: Enhanced Machine Controller (EMC) > > > Subject: Re: [Emc-users] non-contact position sensors, surprisingly good > > > performance. > > > > > > > > > Sounds promising, I do not want to compete with low salary. > > > > > Unfortunately, when the competition has technology, economies of scale > and > > low salaries there are few options other than lower salaries. > > > > > > > > > > -- > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > ___ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] webrtc as remote control
I not analize timing performances of webrtc app ... but someone think is possible use webrtc tecnology as remote Lcnc control? I think at qt app that send array data over rtc protocol ... not well think about mechanism ... actually I'm only impressionate about video calling latency performances sometime better than direct pc capture. At last an image is only a bi-dimensional array, So a mask may be a simply way to decode the signal. I remember a work of Sir. Kuminski about quik tecnology bkt -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] non-contact position sensors, surprisingly good performance.
normally i use omron or panasonic micro photocell ... 0.05mm precision of positioning, hight performances of repetitions, hight vibration resistance, low cos, and possibility of shielded chain type cable, or connectors automotive 4 pin type. Not 2USD, but 19USD for 3meters cable type, or 9USD for connectors type. bkt 2018-01-25 21:20 GMT+01:00 Ken Strauss : > > > > -Original Message- > > From: Nicklas Karlsson [mailto:nicklas.karlsso...@gmail.com] > > Sent: Thursday, January 25, 2018 2:55 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] non-contact position sensors, surprisingly good > > performance. > > > > > > Sounds promising, I do not want to compete with low salary. > > > Unfortunately, when the competition has technology, economies of scale and > low salaries there are few options other than lower salaries. > > > > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] non-contact position sensors, surprisingly good performance.
> -Original Message- > From: Nicklas Karlsson [mailto:nicklas.karlsso...@gmail.com] > Sent: Thursday, January 25, 2018 2:55 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] non-contact position sensors, surprisingly good > performance. > > > Sounds promising, I do not want to compete with low salary. > Unfortunately, when the competition has technology, economies of scale and low salaries there are few options other than lower salaries. -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] non-contact position sensors, surprisingly good performance.
On Wed, 24 Jan 2018 23:18:05 -0500 Dave Cole wrote: > On 1/24/2018 7:38 PM, Chris Albertson wrote: > > On Wed, Jan 24, 2018 at 4:06 PM, Dave Cole wrote: > > > >> That is likely an unshielded prox switch. That means that the sensing > >> pattern is a blob that sits right at the base of the plastic tip, not > >> above it. > >> That means that they can also sense to the side of that plastic tip as > >> well. You need to be careful that you don't have any metal next to the > >> plastic tip. > >> > >> The prox switches which do not have a plasic tip, but where the plastic > >> tip is within the sides of the metal sensor tube are considered shielded > >> prox switches. They only sense above the tip and not to the side. Their > >> sense pattern looks like a short flame that comes out of the tube. > >> > >> I tend not to use unshielded proxes as they can trigger sometimes when you > >> don't expect it due to brackets nearby etc. > >> > >> Its amazing that they can sell those for just over $2 bucks.. Crazy cheap! > >> > > When these show up I will test there pattern my intentionally misaligning > > them. But if used for a machine end-stop the target can be pretty well > > controlled. > > > > That is $2 with FREE shipping from China. It is pretty much the standard > > price, not a special deal. > > > > Factory workers in China make about $3.50 per hour so $2 retail allows for > > maybe 5 minutes of labor per unit. Reasonable if the factory is automated. > > > > I was watching a video id Apple MacBook cases being milled from billet. > > The Mac has just one structural part, the unibody case itself. These are > > made literally by a millions from one foot diameter aluminum "logs" that > > are the size of utilty poles. VERY little human labor is required, the > > "logs" are pressed into plates, cut and milled by a special purpose > > machine.So even with labor at $3.50/hour they don't use much labor. > > > > A lot of people don't understand what is going on in China. They have a > lot of automated production plants there and they are building more. I > was there this last spring installing 1 of 3 robotic cells that were > being installed at about the same time. The plant is an automotive > supplier for a nearby car plant. The plant has numerous robots. Very > few people work at the plant, and it runs 24x7. What more could you > want as a manufacturer; cheap labor, a growing skilled labor force, > automation, and low electric rates. Sounds promising, I do not want to compete with low salary. -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] non-contact position sensors, surprisingly good performance.
On Wed, 24 Jan 2018 19:06:26 -0500 Dave Cole wrote: > That is likely an unshielded prox switch. That means that the sensing > pattern is a blob that sits right at the base of the plastic tip, not > above it. > That means that they can also sense to the side of that plastic tip as > well. You need to be careful that you don't have any metal next to the > plastic tip. > > The prox switches which do not have a plasic tip, but where the plastic > tip is within the sides of the metal sensor tube are considered shielded > prox switches. They only sense above the tip and not to the side. > Their sense pattern looks like a short flame that comes out of the tube. > > I tend not to use unshielded proxes as they can trigger sometimes when > you don't expect it due to brackets nearby etc. > > Its amazing that they can sell those for just over $2 bucks.. Crazy cheap! > > Dave As an electronic engineer it is really hard to find somewhere to earn money. -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] non-contact position sensors, surprisingly good performance.
On 25 January 2018 at 02:06, Dave Cole wrote: > > The prox switches which do not have a plasic tip, but where the plastic > tip is within the sides of the metal sensor tube are considered shielded > prox switches. I use these on all my machines. (typically combined with index homing for the best possible repeatability). They have the advantage that they can be buried inside the machine out of harm's way. My target is normally a drilled hole in an non-bearing part of the slide. Sometimes filled with a plastic plug. I thought I had a better picture than this, but you can see the hole that the X-axis one lives in to the left of the ball-nut block in this picture: https://photos.app.goo.gl/zZSFMootmB2rN8GB2 And this picture shows the target hole on the actual lathe slide (for the Z axis) https://photos.app.goo.gl/Bbxfx8WoIZiIjc8l2 In the pic the plug is aluminium. That didn't work It is now Delrin. Its amazing that they can sell those for just over $2 bucks.. Crazy cheap! They partly save the money on the cables. I have had many cable failures and no sensor failures. I would suggest replacing the wires as close as possible to the sensors with something like: https://www.rapidonline.com/lappkabel-1027752-lflex-chain-808-cp-grey-drag-chain-cable-3-x-0-5mm-63-4350 Note that you are then spending much more on the wire than the sensor :-) (There are cheaper 3 x 0.5mm cables in the same section of that web site) -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
