Has anyone added switches to a YooCNC 3040T control box?

[cimitoka]

then this may work??


Cimitoka

[cimitoka]

then this may work!! with my components??


Cimitoka

[john-100]

Hi Cimitoka



the simplest way is to use IDC d-type connectors
to make a Y cable

but I'd expect you will need a 5V supply and pull up resistors
( adding opto-isolators will help to protect your printerport)

some thing like this



more detail to follow

John

[cimitoka]

ok I ordered IDC d-type connectors ...


Cimitoka

[john-100]

hi Cimitoka

I've just found this -

http://www.matrixmultimedia.com/reso...EB035-30-1.pdf



it has LED indicators you may not need but is the closest ready made board so far
except we need the outputs to pull down the printerport input pins to ground

update

this is more like it

http://reprap.org/wiki/Opto_Isolator_1_0#Schematic

opto-isolator IC
http://www.fairchildsemi.com/ds/HC/HCPL2631.pdf




this is another ready made board worth looking at

http://www.futurlec.com/Mini_Opto_Isolator.shtml




I'll post various DIY versions as soon as I can



John

[john-100]

hi Cimitoka


have you made any more progress?

looking at the breakout board again it looks like you need to make a bracket to mount the board inside the box


will you make your own opto isolator board or are you looking for a ready made option


John

[cimitoka]

Hello John I did nothing because I'm still waiting for d-type!!!

but I do not think I will do the same because it seems a bit 'complicated maybe it's better if I buy a new breakout board!!!

What do you suggest since you've seen my control box?




Cimitoka

[john-100]

Hi Cimitoka

for breakout boards without optoisolators I'd use CNC4PC's C10 or C50
they have the advantage of having the IC's in sockets that makes them easy to replace
(a cheep board from china I looked at had a few design errors )

the CNC4PC breakout boards , like most other breakout boards they don't have
a 5V regulator to enable you to use the 24V stepper driver supply

this ready made board could be an option

http://www.ebay.co.uk/itm/LM2596HVS-.../www.sky.com/#



the downside of changing the breakout board is they will not have the onboard connectors that match the ones on your cables


John

[cimitoka]

Hi John
I think (Limit switch) they are very important for someone who does not know how to use it cnc Machine I have ruined NUT


Cimitoka

[john-100]

Hi Cimitoka

thats a setback you could of done without !
I would not of expected the steppermotors to have enough torque to break the nut
what happend , did you lose the ballbearings

John

[glenfraser]

Hi Chaps,,, Just got my machine and box....same box as the first post but slightly different inside and another one of the boards has display on the connector. It looks like it might be able to do the limit switches....has anyone had a go at doing that with this pcb ???

[cimitoka]

Hi John

I do not know what happened....
I just know that it is broken into two... Y axis is crashed on the other side (


Cimitoka

[cimitoka]

Cimitoka

[cimitoka]

this is the NUT broken!!


Cimitoka

[john-100]

Hi Cimitoka
its smaller and simpler than I expected

I was thinking of a larger size ball screw

what looks like an acme threaded nut should not be too expensive
have you contacted the company you bought the machine from ?


john

[cimitoka]

Hi John
No it is not expensive. Already bought ....
I have not contacted them because it is a company that sells on ebay..


Cimitoka

[john-100]

Hi Cimitoka

thats good news that spare parts are available for the cnc 4030 machines

John

[cimitoka]

what kind of Machine do you have?


Cimitoka

[john-100]

Hi Cimitoka


just at the moment I don't have a CNC machine of my own

but I've have helped others to repair their machines !
the last one was this I think -

Bridgeport Interact II failure
bridgeport 24V regulator repair

(due to a problem with my profile I can't find adev's post here when he had a problem with a servo )


I started building the stepper drivers and breakout board and collecting parts to convert a mini lathe
but then changed my mind and decided to use the parts for a miller / router to practice on

the stepper drivers proved to be too simple ( full step only !)
and will be replaced not sure what with yet

as for the day job
the nearest to CNC I get is with the likes of the sony BVC 10 betacart that can playout tv commercial from 40 tapes
it was made as an inexpensive replacement for the 1970's Ampex ACR25 that could playout from 24 cassettes (used 2 inch tape !)

[ATTACH=CONFIG]229824[/ATTACH
john

[cimitoka]

Hi John
This is my new CNC MDF...
took me almost a month to do!!!


Cimitoka