Electronic Lead Screw Project

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Electronic Lead Screw Project

This topic has 284 replies, 31 voices, and was last updated 29 August 2021 at 19:21 by John Hinkley.

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24 November 2019 at 20:20 #438659
Roger Clark
Participant
@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
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24 November 2019 at 20:20 #15252
Roger Clark
Participant
@rogerclark
The aim of this thread is to detail the build and give help where needed
24 November 2019 at 23:36 #438685
Zan
Participant
@zan
Magic. I’m on it
25 November 2019 at 15:24 #438741
Neophyte
Participant
@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.
26 November 2019 at 11:53 #438840
Roy Vaughn
Participant
@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?
26 November 2019 at 12:29 #438849
Micky T
Participant
@mickyt
Hi Roy they are available from Mouser.co.uk**LINK**

Mickyt
26 November 2019 at 15:34 #438876
Neophyte
Participant
@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.
26 November 2019 at 15:42 #438878
Zan
Participant
@zan
Ordered mine from mouser.co.uk.
26 November 2019 at 16:49 #438886
Roger Clark
Participant
@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.
26 November 2019 at 19:57 #438905
Roy Vaughn
Participant
@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?
26 November 2019 at 20:00 #438906
Zan
Participant
@zan
Me! But not really started yet
26 November 2019 at 20:25 #438911
Phil Grant
Participant
@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.
26 November 2019 at 20:39 #438914
Phil Grant
Participant
@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
26 November 2019 at 21:17 #438920
Neophyte
Participant
@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.
27 November 2019 at 13:39 #439029
Zan
Participant
@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
27 November 2019 at 15:11 #439051
Roger Clark
Participant
@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 .
27 November 2019 at 16:02 #439056
PekkaNF
Participant
@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. "
28 November 2019 at 16:01 #439251
Phil Grant
Participant
@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
28 November 2019 at 16:06 #439252
Michael Gilligan
Participant
@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.
28 November 2019 at 16:13 #439253
Roger Clark
Participant
@rogerclark
Just affects the level of accuracy and maths in the Arduino routine.

Roger
28 November 2019 at 16:14 #439254
Phil Grant
Participant
@philgrant54580
I don't think so, you can configure the pulse count in the software configuration file.
28 November 2019 at 16:29 #439258
Neophyte
Participant
@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.
28 November 2019 at 16:42 #439261
Phil Grant
Participant
@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!
28 November 2019 at 18:23 #439269
Zan
Participant
@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
28 November 2019 at 19:39 #439278
Brian Oldford
Participant
@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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