[Emc-users] Off topic. Open CV and Newts

[Roland Jollivet]

Have a look at www.Roborealm.com. It's great software, extremely versatile,
low cost, and you get a trial period. Windows based.

Since he has images on hand, he could use one of the image match modules,
or reduce to monochrome blobs and use those.

Regards
Roland


On 22 September 2015 at 16:12, andy pugh  wrote:

> A friend is a professional newt-spotter. He is an ecologist who has a
> lot of dealings with the Great Crested Newt, a protected species.
> Part of his work involves identifying individual newts by their
> distinctive orange and black belly markings. He has several hundred
> photos to check to figure out which ones are of the same newt.
>
> It seems to me that this would be a good application for machine
> vision. Can anyone give pointers to a way to get up and running
> quickly with this?
>
> --
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> If you can't fix it, you don't own it.
> http://www.ifixit.com/Manifesto
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Re: [Emc-users] Emc-users Digest, Vol 113, Issue 79

[Tim March]

You might want to look at pymini works somewhat like hal2ardinio. But with GUI 
for setup. Google pymini it will be at http://www.ecklersoft.com range of price 
$60 to $80 depending if you want the case very compact unit. Works with all 
paraport cnc software Linuxcnc, Mach and others on Lunux , Windows, and Mac OS. 
It also gives the option to add a Arduino for more I/O.

Sent from my iPhone

> On Sep 23, 2015, at 12:01 PM, emc-users-requ...@lists.sourceforge.net wrote:
> 
> Re: [Emc-users] A lot of input/output. Cheap

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Re: [Emc-users] Need a computer (LinuxCNC & Mesa) Advice

[Gregg Eshelman]

On 9/22/2015 2:22 PM, Karlsson & Wang wrote:
>> If it is for professional use, I would not get a refurb unit. Why take
>> someone else's problem for a few bucks. For the mini(itx,atx) systems,
>> cooling is the biggest issue. They tend to often focus on home media apps,
>> and they want the lowest sound, which means poor thermal management. I's
>> the same reason you don't use a laptop in a server situation, no matter how
>> cheap it is. Depending on the mounting, either small towers or small 1U
>> rack mount chassis do the best, IMO.
>
> According to my experience old servers or other large computer often could be 
> bought cheap.

What you don't want is a cheap or free server that an IT department too 
lazy to remove the drives from their sleds has prepped for disposal. 
Replacement sleds tend to be expensive, hard to find or both.

There are closets all over this land with years old hard drives on 
shelves, still screwed into sleds the owner of the drives have no 
servers they'll fit. If they're that paranoid about security, remove the 
drives from the sleds, pop those back into the servers before selling or 
giving them away - then have a sledgehammer party with the drives.

Nobody is recovering any data from platters mashed and distorted and 
scraped up, or shattered into powder if they're glass.


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Re: [Emc-users] A lot of input/output. Cheap

[Sven Wesley]

2015-09-22 22:06 GMT+02:00 Dave Cole :
>
>
> I would avoid putting the machine vertical unless you have no choice.
> The machine likely is setup for ejectors that push the molded parts out
> so they can drop down.
>
> It will also mess with your mold heat control since you will have one
> above the other.   Heat rises and you will be surprised how much the
> heat will transfer from the bottom plate to the top plate.
>
> Last, how will you change molds with one on top of the other.   With it
> vertical, now you can't drop them in with a crane/lift.
>
> Also the granule feed system for the screw is usually gravity feed.
> That would need some rework.  You will be surprised how difficult doing
> that will be.
>
> There are some good reasons why they are made in a horizontal fashion.
> You will also likely need to alter the hydraulics so the machine doesn't
> fall open or closed if it loses power.
>
> Dave
>


Guys,

I've owned this machine quite a while, I know how it works. I'm not new in
the plastics arena as I started moulding in the early 90's.
This particular machine is made for vertical moulding, I can flip it as it
is. It takes me 15 minutes to re-arrange the setup for verticals and it
runs perfect that way too. On a vertical you simply slide the moulds into
place. I prefer that instead of craning any given day. We're not talking 60
ton or above. This is a 35 ton machine so the moulds aren't really that
heavy.

A slow PC with LinuxCNC and an Arduino board is way cheaper than any PLC
ECU. If I retrofit this lump _it_will_be_ LCNC. But at the moment I am more
into ripping it up and save some of the parts for a home brew.

/S
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Re: [Emc-users] A lot of input/output. Cheap

[Karlsson & Wang]

> I've owned this machine quite a while, I know how it works. I'm not new in
> the plastics arena as I started moulding in the early 90's.
> This particular machine is made for vertical moulding, I can flip it as it
> is. It takes me 15 minutes to re-arrange the setup for verticals and it
> runs perfect that way too. On a vertical you simply slide the moulds into
> place. I prefer that instead of craning any given day. We're not talking 60
> ton or above. This is a 35 ton machine so the moulds aren't really that
> heavy.
> 
> A slow PC with LinuxCNC and an Arduino board is way cheaper than any PLC
> ECU. If I retrofit this lump _it_will_be_ LCNC. But at the moment I am more
> into ripping it up and save some of the parts for a home brew.

I am new to linuxcnc and are just starting to get my first machine running. Are 
there any suitable user inteface for an injection molding machine? These kind 
of ordinary robot arms?

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Re: [Emc-users] Porting LinuxCNC(EMC) to Windows was CAD/CAM for LinuxCNC

[Karlsson & Wang]

> The machine hardware needs to be smart enough to monitor for 
> communication failures. There should be full duplex communication so 
> that every command either way is answered by an ACK. No response, it 
> shuts down.

Real time data is usually sent periodically and in such other solutions are 
possible. If the receiver know then data should arrive it may turn off if not 
received, this is simple solution that work almost like an ordinary cable 
although with a longer delay. Usually there is data sent back periodically the 
other way and this could be used instead of an ack.

If you send data then changed and use an ack instead of periodic data you 
almost certainly end up using less bandwidth except then needed the most!

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[Emc-users] multiple gcode streams in parallel

[Jerry Scharf]

Hi,

I have hacked up a simple program to allow a client to connect up to the
linuxcnc system and issue g code commands. It's fairly stupid, just enough
to get what we needed done.

I now need to extend it to run two separate robots off the same linuxcnc
controller and receiver program. This brought up a question about the
python interface.

Can I issue two separate motion commands for different axes at the same
time? One bot is a single axis on b and the other uses a,x,y,z. The motion
for each is serialized by the nature of the network buffers, but I am
trying to understand whether I need to serialize the commands between the
different streams. It seems right now like if I move the machine manually
from the GUI, the program then thinks the controller is not ready to accept
mdi commands.

I have an allocation command that is being extended to have you tell it
which axes this client wants to move. This prevents two programs from
fighting over a given stepper...

It's really minimal code but I will share it if people are interested.

jerry

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