Elektronica Stynus
 

UV PCB Exposure box V3

If I had to expose a double sided pcb with my previous exposure box, I needed to turn it on twice. (1 time for the top, and 1 time for the bottom) To solve this problem it was time to build a new version. This new version will do the 2 side's at once.

 

This time I chose for LED's instead of fluorescent light, so I designed some pcb's to mount the leds on to. The pcb's will be connected per 6. This allows me to exposure pcb's off 20 * 30cm max. The top of the board has no solder mask. This works as a reflector.

http://image.elektronicastynus.be/81/1311520153.jpg

Soldered:

http://image.elektronicastynus.be/81/1311520176.jpg

Test:

http://image.elektronicastynus.be/81/1311520160.jpg

 

Then came the biggest work: The case make. To save space I didn't use the traditional flap open model but a kind of sliding model. Where the glass panels slide out.

http://image.elektronicastynus.be/81/1311520158.jpg

You can pull the upper plate up to insert the pcb between the glass sheets and to clamp it.

The base plate with spacers and two side plates::

http://image.elektronicastynus.be/81/1311520170.jpg

 

With the slider mounted:

http://image.elektronicastynus.be/81/1311520167.jpg

http://image.elektronicastynus.be/81/1311520161.jpg

 

Test with glass in it:

http://image.elektronicastynus.be/81/1311520182.jpg

 

I added some springs on the screws to make the hinges clamp the glass

http://image.elektronicastynus.be/81/1311522816.jpg

On the front I added some bulletsnaplocks.

http://image.elektronicastynus.be/81/1311627001.jpg

 

The top plate mounted with the buttons / lcd on the place where they should be mounted.

http://image.elektronicastynus.be/81/1311520164.jpg

 

For the power supply I used a 20V toroidal transformers. The voltage is a bit high, so I used some switching voltage regulators to power the led pcb's.

http://image.elektronicastynus.be/81/UV_PSU.png http://image.elektronicastynus.be/81/UV_PSU_PCB.png

http://image.elektronicastynus.be/81/1311626823.jpg

(One of the voltage regulators is still on order.)

 

I made a new timer to switch the light panels. This new timer remembers the last exposure time, so you don't have to remember it yourself anymore..

http://image.elektronicastynus.be/81/UV_Timer.png http://image.elektronicastynus.be/81/UV_Timer_PCB.png

http://image.elektronicastynus.be/81/1311626820.jpg

 

Build in the case:

http://image.elektronicastynus.be/81/1311626826.jpg

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Update 16/08/2011

The project is finished now.

 

Some pictures from during the build:

Spray painted the sides + bended a top cover plate.

http://image.elektronicastynus.be/81/1313516075.jpg

http://image.elektronicastynus.be/81/1313516087.jpg

Mounted the front plate:

http://image.elektronicastynus.be/81/1313516080.jpg

Inside:

http://image.elektronicastynus.be/81/1313516083.jpg

 

Finished:

http://image.elektronicastynus.be/81/1313409198.jpg

http://image.elektronicastynus.be/81/1313409216.jpg

 

Placed on the location of the old exposure box:

http://image.elektronicastynus.be/81/1313516073.jpg

http://image.elektronicastynus.be/81/1313516082.jpg

With the slide out:

http://image.elektronicastynus.be/81/1313516781.jpg

Open:

http://image.elektronicastynus.be/81/1313516787.jpg

Clamped PCB:

http://image.elektronicastynus.be/81/1313516784.jpg

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Available Products:

 

Timer bouwpakket
Timer PCB
UV belichtingsbak LED print bouwpakket
PIC16F628A UV belichtingsbak timer
Timer build kit
Timer PCB
UV PCB Exposure LED pcb build kit IC16F628A UV PCB Exposure timer
15V 25W voeding
15V 25W Power Supply

 

 

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Files

PCB files LED panels: Download

PCB files timer: Download

PCB files power supply: Download

Code timer: View / Download.

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Comments

Name: lebeno
Date: 27 Jul 2011, 18:52
Message:
Very nice build. I really like the way your projects make the hardware and elektronics come together.

Greetings from Gent, Belgium.
Name: Jon
Date: 17 Aug 2011, 14:19
Message:
Great work and design!
Name: Alex Henrique
Date: 17 Aug 2011, 14:26
Message:
I have similar project, and I want to make similar timer. Can you share code please? Thanks anyway, and congratulations for this interesting project. Alex, from Brazil.
Name: Christian Wilhelmsen
Date: 17 Aug 2011, 15:14
Message:
Holy, you stole my design and made it go from trash to perfection!
Have had a simple two-sided box for about a year, never had the tools or material to build what you got here.
I must say, great job, will definately try to replicate your work some time.

Christian/Norway
Name: Jon neal
Date: 17 Aug 2011, 17:52
Message:
Do you know how small you can go with the inkjet printer & transparency paper? Fantastic job!
Name: Stynus
Date: 17 Aug 2011, 18:15
Message:
@lebeno, Jon, Christian Wilhelmsen
Thanks

@Alex Henrique
The code will be released in a few days.

@Jon neal
I haven’t tested it to the limits, but I think 0.016" or even 0.010” is possible.

Stynus
Name: Fredrik
Date: 17 Aug 2011, 19:34
Message:
Care to release the files for the LED boards? I have a bag of a couple of hundred UV LEDs just waiting to be made into an exposure box just like yours.
Name: Rob
Date: 17 Aug 2011, 22:47
Message:
Great project.

Can you tell us the specs of the leds, the distance between them and the distance between the leds and the glass.
Name: Max
Date: 19 Aug 2011, 01:00
Message:
Great project.

Ive been looking at millions of exposer box plans and non of them fit my needs or are as good as the one that you have made. And I was wondering if you could share your code for the timer.

Thank you,
Max

To contact me just email me.
Name: Dino
Date: 20 Aug 2011, 15:13
Message:
Have you LED PCB's and Timer for sale ?
Name: Stynus
Date: 20 Aug 2011, 15:31
Message:
@Fredrik
In a couple of days it will be released.

@Rob
The distance is 5.5cm.
The specs of the leds are: 395nm wavelength, 1100mcd, 160°.

@Max
The code will be released next week. (Need to tidy it up, and add comments)

@Dino
At the moment not. But I have plans to make kit's of these things.

Regards,
Stynus
Name: Jsm
Date: 23 Aug 2011, 09:17
Message:
Hi any updates on when your releasing the code?

cheers!
Name: Alex Henrique
Date: 07 Sep 2011, 02:11
Message:
Please tell me what program you use to compile the basic code in hexadecimal? Thank you for sharing the code.
Name: Stynus
Date: 07 Sep 2011, 18:21
Message:
Proton Picbasic

Regards,
Stynus
Name: Aerendraca
Date: 15 Sep 2011, 23:27
Message:
Wow, this really is inspirational! I have just finished building a uv lightbox myself and was looking for ideas on installing some kind of timer circuit, this is exactly how I was planning on having it setup.

Thank you so so much!

Experts like you keep amateurs like me plodding along.
Name: Dino
Date: 03 Nov 2011, 09:46
Message:
Hi,
Can you check in Timer PCB if pin 9 of IC3 is not connected.
In PCB is a small trace which go nowhere .
Can you put in a .zip file the file package for ITead Studio pcb manufactor ? May be in this stage is more eazy for me ta order from a profesional.
Thank
Dino
Name: Aerendraca
Date: 03 Nov 2011, 13:05
Message:
Hi Dino,

Having built this circuit a few weeks back i can confirm that pin 9 of IC3 is not required. I think from studying the circuit diagram and researching on the web that Stynus may have had plans at some point to use this pin to switch on/off the backlight of the display. This doesn't seem like a greatly useful feature so I would imagine that the idea was dropped.

Hope that's useful to you.
Name: Stynus
Date: 03 Nov 2011, 17:57
Message:
Hi,

Pin 9 was used to switch the backlight in my prototype. But when I was writing the code, I decided not to use it, so I deleted it in the circuit diagram. But I forgot a small trace in the pcb file.

PS: I will be selling kits of this project in a few weeks (I applied for a VAT number, but I don't have it yet).

Regards,
Stynus
Name: Dave
Date: 23 Nov 2011, 12:59
Message:
Hallo, great work, but i need some info about the relays, the you are used. The type G6RW... What Manufacturer? I heve seen only G6RN.. Can i use the RN? I have not teh datasheet from the RW type... Thanks Dave
Name: Aerendraca
Date: 23 Nov 2011, 20:48
Message:
Just had a look at the datasheet for the G6RN, looks like the same part to me. Pinout matches the size of the part on the schematic.

Name: Dave
Date: 24 Nov 2011, 23:01
Message:
Thanks, i have today ordered the G6RN it have 12V coil, it will work :-))
Name: Yann
Date: 26 Nov 2011, 12:42
Message:
Hello,
This is a great job.

You clamp the pcb between the two glasses, right.

Is there any risk of breaking them?

And what is the thickness of those glasses!

Name: Stynus
Date: 26 Nov 2011, 20:34
Message:
That’s correct. There is not enough pressure on the glass to break it. There is a spring system to compensate the pcb thickness. The thickness is 3mm (Standard scanner glass).

Stynus
Name: Yann
Date: 27 Nov 2011, 10:20
Message:
Thank you.
Can you post more photos of the clamp system?
I actually try to improve my exposure box made with fluorescent tube and electronic ballast.
But failed with the clamp system,(using vaccum pump, glass sheet and plastic sheet.


Best regard
Name: Stynus
Date: 03 Dec 2011, 15:41
Message:
Yann,

I can't make better pictures because the springs are not visible. But the clamping happens in the back at the hinge with 4 springs (on the side of the nut) that press the top part towards the hinge.

The front is pressed by bullet snap locks that are mounted a bit too low.

Stynus
Name: Tibi
Date: 06 Dec 2011, 11:27
Message:
Hello,
This is a great job.
Can I use for microcontroler a PIC16F628A-I/P ?
Thanks,
Tibi.
Name: Stynus
Date: 06 Dec 2011, 18:17
Message:
Hello,

Thanks.

Yes you can use that microcontroler.

Stynus
Name: Dino
Date: 08 Dec 2011, 09:52
Message:
Hello Stynus,
News about price and availability for a set of PCBs ?
Name: Stynus
Date: 10 Dec 2011, 15:31
Message:
Hello,

The timer pcb's are now for sale.
http://www.e-stynus.com/

Stynus
Name: Fredrik
Date: 10 Dec 2011, 15:45
Message:
Great!

I would love to get my hands on the other boards too. Any info on availability of those?
Name: Stynus
Date: 10 Dec 2011, 17:11
Message:
Hello,

I'm going to add the led pcb's to. But I don't have them in stock yet. I think it will be in stock in January.

Stynus
Name: Zayance
Date: 21 Dec 2011, 22:00
Message:
Hi There, nice job...
I would also be interested in a set of LED boards if available.

Thanks
Name: Stynus
Date: 16 Jan 2012, 23:04
Message:
Hello,

I have ordered the leds boards and the leds. They will be available in the store in February.

Stynus
Name: Dino
Date: 02 Feb 2012, 09:49
Message:
Hello Stynus,
have you test your box ?
Which photo pcb brand and wich exposure time ?
What is the distance from leds to pcb ?

Thank
Name: Stynus
Date: 02 Feb 2012, 20:12
Message:
Hello,

Yes, I can expose tracks of 10mill with it. The brand of pcb is bungard.
The distance from the uv leds to the glass is 5.5cm.

Stynus
Name: axy
Date: 16 Feb 2012, 03:51
Message:
Hi , What is his value R2 ? thx.
Name: Stynus
Date: 16 Feb 2012, 18:42
Message:
It depends on the used lcd.

Stynus
Name: axy
Date: 24 Feb 2012, 00:04
Message:
hi good job, I have a small problem does not work the buzzer only 2 knock knock
Name: Stynus
Date: 24 Feb 2012, 08:57
Message:
Do you use a DC buzzer?

Stynus
Name: axy
Date: 25 Feb 2012, 09:47
Message:
I waited on it will start beeping itself :)
I had to purchase a special buzzer :(
not count my time correctly with value 107 ,that better setup?
Name: Stynus
Date: 25 Feb 2012, 10:37
Message:
Strange, can you check for short circuits? Even if it is an AC buzzer it should not start to beep by itself.

If the timing is not correct you can adjust the value in the hidden menu, a higher value will give a faster time, lower value will make it slower.

Stynus
Name: Dino
Date: 02 Mar 2012, 21:10
Message:
Hello Stynus,

Can I use 16F628 instead 16F268A ?
The HEX File will be same ?

News about PCBs ?

Dino
Name: Stynus
Date: 03 Mar 2012, 00:30
Message:
Hello,

I think it should work, however I haven't tested it.

The LED PCB's are added to the shop now.

Stynus
Name: Alex Henrique
Date: 03 Mar 2012, 01:51
Message:
There's no 16f628a...
http://search.microchip.com/searchapp/searchparts.aspx?q=16F268A&id=3
Name: Stynus
Date: 03 Mar 2012, 17:13
Message:
Alex, I think it is just a typo from Dino. He means the 16F628A that is used above.

Stynus
Name: Dino
Date: 05 Mar 2012, 08:20
Message:
Hi
I transferred the hex to 16F628 w/o any error. Hope it will work.

Stynus hawe you also the Power Source PCB to complete the KIT ?
Name: Stynus
Date: 05 Mar 2012, 22:12
Message:
Dino,

I can sell you a self etched pcb of the power supply. But I don't think it is generic enough to add to the shop. However I added some 15V power supply's to the shop. url.e-stynus.com/21/

Stynus
Name: Francisco Vallverdu
Date: 22 May 2012, 10:57
Message:
Dear friend:
Congratulations on your project. I would appreciate provide the file. Hex, and try to compile with PICBASIC herrores me.
Thank you very mu
Name: Stynus
Date: 22 May 2012, 16:50
Message:
Hello,

The hex file can be found in the zip file.

Regards,
Stynus
Name: Frank Mertens
Date: 04 Jul 2012, 13:43
Message:
Hello,

can you put the drawings or schematics of the housing on the site or can you make a kit for purchasing te housing?

Thank you
Name: Stynus
Date: 04 Jul 2012, 19:44
Message:
Hello,

At the moment I don't have drawings of the housing. But it's on the todo list. Also a kit is on the list.

Regards,
Stynus
Name: Alan
Date: 08 Sep 2012, 11:42
Message:
Hi, do you put any resistor to control the current for those LEDs? and how about the voltage output rated from power supply unit?
Name: Stynus
Date: 08 Sep 2012, 12:01
Message:
Hello,

There is a 150 Ohm SMD resistor connected in series with each string of 4 leds. The voltage from the power supply is 15V.

Stynus
Name: Alan
Date: 10 Sep 2012, 12:03
Message:
Hi Stynus, can i know how big is ur grid for the LEDs??
Name: Stynus
Date: 10 Sep 2012, 22:11
Message:
Hi,

The LED's are 1.7cm apart.

Stynus
Name: Alan
Date: 11 Sep 2012, 17:05
Message:
Thanks,

what is the Max forward voltage?? the spec of my UV LEDs was 3.4v Max, should i lover the voltage??
Name: Stynus
Date: 11 Sep 2012, 17:23
Message:
Hello,

No, voltage is ok, you can use 3.4V vmax led's.

Stynus
Name: Alan
Date: 12 Sep 2012, 16:15
Message:
I have planned to use the spacing of 2cm of my exposure area of 20x25cm, and i planned to have a space of 2cm between each LEDs, is the exposure lvl is sufficient?...

Alan
Name: Alan
Date: 12 Sep 2012, 17:43
Message:
i just tried to arrange the LEDs, but i could not figure out the design of the pcb for the LEDs, would u mind to send me the actual design??

Thanks alot!!

alan
Name: Stynus
Date: 12 Sep 2012, 18:36
Message:
Hello,

You have to experiment with different spacings. You can download the design files above.

The pcb's are also for sale in the store.

Stynus
Name: Gerson Silva
Date: 03 Oct 2012, 01:19
Message:
Hello,

I can use LEDs from other angles? The distance between the plate will be the same?

Thank you.
Name: Stynus
Date: 03 Oct 2012, 15:49
Message:
Hello,

Then you need to experiment.

Stynus
Name: Stynus
Date: 04 Apr 2013, 20:44
Message:
Student, I relocated your questions to the forum. http://forum.elektronicastynus.be/post/160/#p160 It was to much text to be in the comments.

Stijn
Name: steve parker
Date: 02 Jan 2014, 23:23
Message:
Hi. Really admire your work. I am in US so have to make minor changes on power and also would like to include more SMD components. Are there eagle cad files available to modify?

Thank you
Name: Stynus
Date: 03 Jan 2014, 17:39
Message:
Hello,

There are only the pdf files available from this project.

The voltage these pcb's need is 12V, so no need to alter them for us.

Stijn
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