Electronic Lead Screw Project

[Roger ClarkParticipant @rogerclark]

I've set this up in liaison with Phil Grant who is preparing photos and notes to detail his conversion and for anyone else to add there builds and for any help we can give to each other. such as sourcing parts, resolving problems etc.

It'll be great to see all come together on this, everyone is welcome

Roger

[Roger ClarkParticipant @rogerclark]

The aim of this thread is to detail the build and give help where needed

[ZanParticipant @zan]

Magic. I’m on it

[NeophyteParticipant @neophyte18007]

I have my board running for a metric lead screw. My next task is working out a way to fit a stepper neatly to my Prazimat DLZ180. For me, that is going to be the hard part and may take a long time. I would prefer to fit it at the headstock end rather than behind the bed at the tailstock end. After watching Jon Bryan on You Tube I am concerned about the size of stepper to use. I do have a NEMA23 3NM which will have to run with an overall gear ratio of 4 to 1, if I can shoe horn it in at the headstock end.

I would like to hear if anyone else with a Prazimat DLZ intends to fit this or Jon Bryan's ELS.

Paul.

[Roy VaughnParticipant @royvaughn26060]

I'm trying to avoid the double whammy of exorbitant shipping from the USA and the import charges. Has anyone found a source for the TI board in the UK or elsewhere in EU?

[Micky TParticipant @mickyt]

Hi Roy they are available from Mouser.co.uk**LINK**

Mickyt

[NeophyteParticipant @neophyte18007]

I bought two boards from Mouser. Buying two pushed my purchase over the free shipping threshold and that made quite a difference to the price paid per board. It was the cheapest way I could find to buy them. They were posted to me from the USA, but arrived within a week as far as I remember. It was a few months ago.

Paul.

[ZanParticipant @zan]

Ordered mine from mouser.co.uk.

[Roger ClarkParticipant @rogerclark]

Bought mine through Mouser UK with some more bits for free shipping and then tracked it from ,I think, Texas but no import charges!

Came through in less than a week.

[Roy VaughnParticipant @royvaughn26060]

Thanks for your replies, saves a bit of money compared with doing it yourself direct with the States.

Is anyone else planning to fit ELS to a Myford S7?

[ZanParticipant @zan]

Me! But not really started yet

[Phil GrantParticipant @philgrant54580]

Posted by Roy Vaughn on 26/11/2019 11:53:38:

I'm trying to avoid the double whammy of exorbitant shipping from the USA and the import charges. Has anyone found a source for the TI board in the UK or elsewhere in EU?

I found the cheapest option was fro TI themselves, it came from Germany but the postage was cheaper than Mouser or Digikey.

[Phil GrantParticipant @philgrant54580]

Posted by Neophyte on 25/11/2019 15:24:08:

I have my board running for a metric lead screw.

I would like to hear if anyone else with a Prazimat DLZ intends to fit this or Jon Bryan's ELS.

Paul.

Hi,

I have the alias "Neophyte" down on my list for a PCB, do you already have one, I may have you down twice, once under your real name. I have sent a PM to Neophyte but it's been unread for a while.

Phil

[NeophyteParticipant @neophyte18007]

Hi Phil,

I am not at all used to using this site yet.

Yes please, I would like one of your boards.

I will search for your PM.

Sorry for any confusion.

Paul.

[ZanParticipant @zan]

Time to get the encoder, but a couple of important questions…..

1). Does it need to be incremental or absolute

2). pnp, npn,  or open collector *2 output., which I think is best as it gives A and B with not A and Not B which I think will give the 4 times count so that a nominal 1000 pulse can be increased close to the cough42 ( 4092(?). The exact pulse count is set within the setup of the software

I will be ordering from China which has a long lead time, or the cost is at least 4 times greater

 

edit.. syntax

Edited By Zan on 27/11/2019 13:40:59

[Roger ClarkParticipant @rogerclark]

Hi Zan, I've got a E6B2-CWZ6C from newworld-201 on Ebay, ordered on 11/11/19, arrived on 22/11/19 so good service from China. Haven't tested it yet .

[PekkaNFParticipant @pekkanf]

Zan,

You may want to have look on GitHub Wiki component list: – lathe spesic parts

https://github.com/clough42/electronic-leadscrew/wiki/Stuff-You'll-Need

And watch episode Lathe Electronic Leadscrew Part 15

" I used a 1024-pules (4096 count) encoder (Omron E6B2-CWZ6C).
Choose an encoder that runs on 5VDC with open-collector outputs. "

[Phil GrantParticipant @philgrant54580]

I bought one of these, UK delivery.

Search for this on Ebay

600P/R Photoelectric Incremental Rotary Encoder 5V-24V AB 2-Phases Shaft 6mm UK

Edited By Phil Grant on 28/11/2019 16:02:47

Edited By Phil Grant on 28/11/2019 16:03:32

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Phil Grant on 28/11/2019 16:01:16:

I bought one of these, UK delivery.

Search for this on Ebay

600P/R Photoelectric Incremental Rotary Encoder 5V-24V AB 2-Phases Shaft 6mm UK

.

Ahh … So 1024 isn’t obligatory

MichaelG.

[Roger ClarkParticipant @rogerclark]

Just affects the level of accuracy and maths in the Arduino routine.

Roger

[Phil GrantParticipant @philgrant54580]

I don't think so, you can configure the pulse count in the software configuration file.

[NeophyteParticipant @neophyte18007]

Phil,

UK delivery yes, but don't be surprised if it's shipped from China.

Generally, I find that if the sellers address, towards the bottom of the eBay page on the left hand side, is in China, that is where the item is likely to be posted from. I have been caught out many times like this. Sometimes the items arrive on time, but mostly they don't. I am waiting for bevel gears and a few other things at the moment that were supposedly posted from UK stock. Two weeks overdue so far.

Paul.

[Phil GrantParticipant @philgrant54580]

Neophyte,

Yes, I've had the same problem but this came pretty quick.

Sometimes they have stuff sent from China, keep it in stock and then put a UK postage label on it to send out but if they have non left they don't tell you but just wait for it to come from China.

Very frustrating!

[ZanParticipant @zan]

Pekkka, I had forgotten about that git hub list. Thanks!

Phil. That seems better than waiting from a China delivery for the encoder, but the one I have found on eBay is a bit light on specification

You can change the pulse count because clough42 gives the information in the video about getting the software he rings two important bits of data, the no of pulses and the tpi ( pitch in metric I seem to remember). Only viewed it once

Ah… there’s two postings unseen on this page!

just got got to get all the components before I really start

 

Edited By Zan on 28/11/2019 18:24:46

[Brian OldfordParticipant @brianoldford70365]

Posted by Roy Vaughn on 26/11/2019 19:57:16:

Thanks for your replies, saves a bit of money compared with doing it yourself direct with the States.

Is anyone else planning to fit ELS to a Myford S7?

Hi Roy

Between my other large list of other jobs I'm in the process of fitting one to my S7.

I'm trying very hard to squeeze the stepper motor into the change gear casing at the LH end of the machine.

Brian

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