Author Topic: Another 4" CNC rotary table  (Read 57343 times)

Offline kwackers

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Re: Another 4" CNC rotary table
« Reply #25 on: October 17, 2010, 11:21:08 AM »
Transistors look fine, all you want is a general purpose NPN transistor.

Seems a shame to waste the PCB... A bit of fudgery is all that's required to fix the mounting hole (or mount by a different method).

If I had a £1 for every time someone asked me if I made PCB's for the divider...  :ddb:

Offline cidrontmg

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Re: Another 4" CNC rotary table
« Reply #26 on: October 17, 2010, 12:49:34 PM »
If I had a £1 for every time someone asked me if I made PCB's for the divider...  :ddb:
Heh, I guess you still would be way behind J.K.Rowlings. But even if one in 5 of the interested would actually also buy a board, it just might be somewhat of a business. You surely wouldn“t be giving them away for free...
I“m trying to use a stripboard, there“s not that many in the way of components really.
 :wave:
Olli
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Offline slowcoach

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Re: Another 4" CNC rotary table
« Reply #27 on: October 18, 2010, 06:06:22 AM »
Nice job on the PCB  :clap:. I was going to go down the stripeboard route myself, but I'm tempted to have a go at that etching malarkey  :D

Rob

Offline j45on

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Re: Another 4" CNC rotary table
« Reply #28 on: October 18, 2010, 07:34:57 AM »
The excellent link tumutbound posted above has a much more detailed walkthrough of the etching process
http://ultrakeet.com.au/index.php?id=article&name=makepcbs

I have decided to use this board now rather than etch another and will have some more pictures soon
And the postman should be bringing me the rest of the missing parts

EDit started stuffing the board with what I have
I use a solder flux pen on the solder pads


I need more parts now  :hammer:


Notice the resistor legs left over these will be handy to connect the lcd later
« Last Edit: October 18, 2010, 08:41:33 AM by j45on »
Jason

Offline j45on

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Re: Another 4" CNC rotary table
« Reply #29 on: October 19, 2010, 11:43:22 AM »
Some more bits arrived today



I'm still waiting for the PIC and some caps from ebay

I ordered these from farnell http://uk.farnell.com/jsp/search/productdetail.jsp?CMP=i-ddd7-00001003&sku=1469371
But they look nothing like the picture  :scratch:
Are they suitable ? if so which way round do they go ?


Jason

Offline kwackers

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Re: Another 4" CNC rotary table
« Reply #30 on: October 19, 2010, 12:05:27 PM »
Looking good!

Diodes are fine, dark band is the cathode as per normal so just place it them the same way round as shown on the component placement diagram.


Offline j45on

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Re: Another 4" CNC rotary table
« Reply #31 on: October 19, 2010, 02:17:23 PM »
Cheers Kwackers  :thumbup: I was worried I bought the wrong thing

I'm going to have to think about programming the pic soon
Just noticed the ebay seller for my pic is away until the 25th  :doh:

There seams to be a confusing amount of programers out there and I don't know what to get  :scratch:
I have programed a AVR micro-controller before but only with specific instructions to follow (I didn't know what I was doing)
What programer would you recomend ?
And what software would I need ?
« Last Edit: October 19, 2010, 02:19:35 PM by j45on »
Jason

Offline kwackers

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Re: Another 4" CNC rotary table
« Reply #32 on: October 20, 2010, 05:36:42 AM »
I'm possibly not the best person to ask for PIC programming - I use either a Microchip Picstart2, or the Mikroelectronica programmers, neither of which are priced for one off projects...

However I have in the past used a freeware JDM programmer - there are lots of clones available on eBay (for example)
eBay JDM Programmer
Indeed a quick whizz around eBay will throw up a multitude of clones and cheap programmers of all denominations.

Most of the hardware comes with software (usually one of the freeware programmers floating around) but there's a whole shed full of software available (Here for example).

The good news is that 18F's are simple devices to program, so there are lots of cheap programmers around and I'd imagine most will work fine, certainly I know lots of people who've built this have also bought cheap programmers and haven't heard anyone complain yet...


(I should add the best way is to usually find someone near you who has such a device....)

Offline slowcoach

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Re: Another 4" CNC rotary table
« Reply #33 on: October 20, 2010, 06:27:19 AM »
Hi, I have used these in the past, PIC-PG2 Programmer from cool components http://www.coolcomponents.co.uk/catalog/product_info.php?cPath=32&products_id=42 also listed on the page is a few links to free compatible software to use with it.

Enjoying the thread  :thumbup:

Rob

Offline j45on

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Re: Another 4" CNC rotary table
« Reply #34 on: October 20, 2010, 09:04:57 AM »
Cheers guys I have one ordered  :beer:
So I now face a bit of a wait for parts so I thought I would crack on with the bit I was dreading most
Cutting a hole in the box  :dremel:

I didn't get any pics of the first bit but I covered the front with masking tape and carefully measured and marked out the hole for the lcd to poke through.
I will be using some standoff's to hold the lcd to the front panel and will machine them so that the lcd sits flush as shown



Having the lcd flush and counter sinking the screws will enable me to use this cover I have printed and laminated (someone else's idea but I don't know who's )
This will be stuck down with some very thin double sided tape and should keep out the swarf and grinding dust that seams to get into everything in my shed/shop



This is my third attempt as the laminating film seams to shrink in the cut out window if it gets to hot
In fact the whole thing tends to shrink just a little throwing out the dimensions so laminate as cool as you can get away with
I used inkscape to design the panel it's free http://inkscape.org/ and I would have made a coloured design but my colour printer never quite gets the size accurate for some reason.

Next to design some inserts for the keypad  :hammer:
Jason

Offline John Rudd

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Re: Another 4" CNC rotary table
« Reply #35 on: October 20, 2010, 10:20:27 AM »
If anyone needs a pic programming, give me a shout...

I have a JDM, a Velleman ( blows the dust off...... :zap:      ) and a (genuine) PicKit2.....
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Offline j45on

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Re: Another 4" CNC rotary table
« Reply #36 on: October 20, 2010, 11:20:01 AM »
Thanks for the offer John  :thumbup:
Hopefully I can do it myself  ::) if not I know who to call

While I was in the shop the postman called with my cap's


It works
Well what I have so far works  :ddb:
Jason

Offline raynerd

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Re: Another 4" CNC rotary table
« Reply #37 on: October 20, 2010, 12:21:15 PM »
Haha - fab  :ddb: your boxs looks great. I threw mine together in about 2 hours, to be fair it does the job but your looks excellent!

Chris

Offline John Rudd

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Re: Another 4" CNC rotary table
« Reply #38 on: October 20, 2010, 12:52:51 PM »
Very pro looking, better than some of my electronic 'efforts'.... :scratch:

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Offline Brass_Machine

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Re: Another 4" CNC rotary table
« Reply #39 on: October 20, 2010, 01:50:23 PM »
Nice looking so far!

Eric
Science is fun.

We're all mad here. I'm mad. You're mad.

Offline kwackers

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Re: Another 4" CNC rotary table
« Reply #40 on: October 20, 2010, 02:01:40 PM »
0.06v too low...

Just remember that means it'll be 0.06% out. So if you're going clockwise you'll need to add 0.06% to the values and anticlockwise take it off...
 :thumbup:


Offline j45on

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Re: Another 4" CNC rotary table
« Reply #41 on: October 20, 2010, 03:03:15 PM »
0.06v too low...

Just remember that means it'll be 0.06% out. So if you're going clockwise you'll need to add 0.06% to the values and anticlockwise take it off...
 :thumbup:



Are you fibbing ?  :scratch:

I have spent far to long on the keypad and used about five sheets of paper but I'm happy now


Will get in printed in colour tomorrow the speed text and arrows will be blue
S and C butons will be red and G will be green
Jason

Offline John Rudd

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Re: Another 4" CNC rotary table
« Reply #42 on: October 20, 2010, 03:20:22 PM »
He's taking the Michael..........

He read the 4.94v on your dvm....

A tutorial on how you made the panel inlays would be good... :bow:
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Offline j45on

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Re: Another 4" CNC rotary table
« Reply #43 on: October 20, 2010, 03:41:50 PM »
I thought he was  :lol: but my gullible side was creeping through  ::)
Hmm a tutorial for the panel sounds tricky but I will give it a go  :thumbup:
Jason

Offline j45on

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Re: Another 4" CNC rotary table
« Reply #44 on: October 22, 2010, 11:02:53 AM »
As requested by John I will try to show you how I made the front panel

First you will need to measure your panel hight and width
Then measure in from the sides to the edge of the lcd window Just the bit that lights up


This is how I did it and there are probably better ways to get to the same result I'm also cr*p at showing people what to do  :lol:

Inkscape is a free Open Source vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X

To download inkscape find the download link on the top left of this page http://inkscape.org/
and look for this bit arrowed if you run windows or above if you use a mac


Now we can move on to making the panel

(before you go to far I suggest you make a small rectangle using the tools shown below and size it to a known and easy to measure size eg: 1" square
then print it and measure it I have had trouble with some printers getting an accurate sized print  :scratch: )

Once you have it installed and open it will look like this
To make sure we have the right settings click on file in the top left
then hover your mouse over "new" and select A4 from the list then close the old window underneath.
The tool arrowed is the one we shall use the most today


Click the "box / rectangle tool" and in the white rectangle which represents your sheet of A4 paper
Click and drag to draw a rectangle
Size is unimportant but be aware that anything outside of the A4 area will not be printed

You should now have something like this before you go any further right click on the box you just drew and select "fill and stroke"



This will open up a box on the right of the window like this
Click on the stroke paint tab and make sure the box no paint is clicked(black arrow)
Then close it with the red arrow



Now we can size the box If your box is not selected use the select and transform tool and then click on your box
Now we need to change the measurements from pixels to mm or inches what ever you are using
click the green arrow



And select the mm option



You wil now probably have to select your box again then you can change the size by typing in your own dimensions in the arrowed boxes



This black box will be our guide so if it is the correct size save your work and continue
Next draw a rectangle using the box/rectangle tool roughly to the shape shown below
While it is still selected pick a colour from the bar at the bottom pick a colour you can find again
as we need to make four boxes the same colour



Then to size your new box click the select and transform tool and select your boxyou can now change the width to match the black one (your panel) and use the hight taken from your measurement
from the top of the panel to the lcd window
You will probably need to change the pixels to mm again
Then using the arrowed magnifying tool drag a small box around one corner of the two boxes



Zoom in a few times until you can line up the edges you may have to select the red box using the select and transform tool to move it
Once you think you have it correctly aligned use the scroll bars to check the other corners all line up
Then exit back to page view by clicking the button arrowed in green



If your happy with that save your work
Now using the same method as above draw a box over the bottom half and size it with your width and hight to lcd window measurements



Then zoom in as far as you can and align the new box with the bottom corners as you did with the top one




Once your happy save again and on to the sides
As before use the box/rectangle tool to drag out a tall rectangle you might find it useful to use another colour
until the box is aligned to help you see it



And size it as before to your panel hight and side to lcd measurement



Align the box as before and when your happy change the colour to match the others



Repeat for the other side and when happy save your work



Now we shall join all four boxes together
Click the select and transform button(black arrow)
Now while holding down the SHIFT key on your keyboard click all four red boxes but not the black one
If you have done it right you should see what the blue arrow is pointing at



Then without deselecting anything press the path button at the top and hover your mouse over UNION and click



You should now have one red panel  :ddb:
Deselect by clicking in blank space away from the panel and then click the black bit through the hole in the red bit
you can now move that to one side off of the page (remember if it's not on the page it wont get printed so you can save all sorts of bits off page and not delete them)
Now would be a good time to change to panel colour to a printer friendly grey(to save on ink) and print it out chop it up and see if it fits  :thumbup:



I don't think I have missed anything  :scratch: so I hope it makes sense and is easy to follow  :thumbup:

The next bit of the (if needed ) tutorial will cover adding text to your panel and laminating
 






« Last Edit: October 22, 2010, 11:07:49 AM by j45on »
Jason

Offline madjackghengis

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Re: Another 4" CNC rotary table
« Reply #45 on: October 22, 2010, 12:05:59 PM »
Hi Jason, that is one professional tutorial :headbang:  I think even I can follow it and not end up using felt tip markers for the buttons when I get to that point.  If I can follow it anyone can.  Thanks for the very carefully laid out tuturial, I will use it when I get past the making of the board, and get the parts I still need.  Great Job.  mad jack

Offline j45on

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Re: Another 4" CNC rotary table
« Reply #46 on: October 22, 2010, 03:56:09 PM »
I will do  keypad insert tutorial as well hopefully some time this weekend
I had my keypad printed by a friend with a colour laser printer it looked great
But came out under size  :scratch: I need to get to the bottom of this printing problem
Jason

Offline John Rudd

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Re: Another 4" CNC rotary table
« Reply #47 on: October 22, 2010, 04:05:15 PM »
Wow......I bet that took some tme to learn....... :bow:

My biggest problem is learning something completely new...

I'm very impatient but your tut should help me to make a more 'pro' looking panel for future electronic projects

Ta very much.. :clap:
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Offline raynerd

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Re: Another 4" CNC rotary table
« Reply #48 on: October 22, 2010, 04:19:27 PM »
.... I just did mine in word  :lol:  :jaw: I`m guessing there must have been a better approach
 

Offline j45on

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Re: Another 4" CNC rotary table
« Reply #49 on: October 22, 2010, 04:43:42 PM »
Your's looks great Craynerd nice and even that's what I'm trying to achieve  :bow:
I'm only using inkscape because I have used it a little before to make some vinyl stickers so I knew if I wanted a 5x5 inch square for example thats exactly what would cut
But I'm having trouble printing  :scratch: to the right size

Here is whats happening
The top greyscale one is perfect from an old B&W laser printer
the lowest one is colour laser printed and to short and a little to short in hight as well
the centre two are massively to big and from a inkjet printer
all printed from the same file  :bang:
Jason