Homebrew PCBs

hi,

first of all, i'd like to thank to moderator for approving me joining 
here :)

my name is hari, i live in indonesia, jakarta, i work for 
telecommunication company as system administrator engineer. my daily job 
are maintaining servers.

oneday my colleague showed propeller clock/text on youtube to me. I was 
amazed, i began researching on how to make it. last thing i remember, i 
put atmega module on cooling fan. LOL. succeed. but not fast enough to 
prevent text from flickered. i need to make lighter mikrocontroller 
module. i need to make custom pcb layout. that's why I ended up in this 
group :).

i know how to use eagle. make layout with it. pcb (or FeCl) are easy to 
find here. the problems, chemicals such as positive 20 or dry film are 
hard to find here (not mention it's also expensive for hobbyist) :(. I 
need enlightenment on how to make simple, good quality pcb, anyway, one 
of my components is is TQFP chip, this is the hardest part...i've read 
some pages, but still haven't got a clue.

need help/guide here :)

thanks in advance

regards


PT.CITRA SARI MAKMUR
SATELLITE & TERRESTRIAL NETWORK

Connecting the distance - anytime, anywhere, any content
http://www.csmcom.com

You can do a laser print and toner transfer way. Or, if you have acces to
positive sensitized boards and muriatic acid, print in transparencies and
develop with muriatic.
I do this last way and quality is enought to do tqfp chips.
In another hand, you can send your design to an online pcb manufacturer
like iteadstudio.


El viernes, 18 de enero de 2013, Hari Hendaryanto <hari.h@...>
escribi�:
>
>
> hi,
>
> first of all, i'd like to thank to moderator for approving me joining
> here :)
>
> my name is hari, i live in indonesia, jakarta, i work for
> telecommunication company as system administrator engineer. my daily job
> are maintaining servers.
>
> oneday my colleague showed propeller clock/text on youtube to me. I was
> amazed, i began researching on how to make it. last thing i remember, i
> put atmega module on cooling fan. LOL. succeed. but not fast enough to
> prevent text from flickered. i need to make lighter mikrocontroller
> module. i need to make custom pcb layout. that's why I ended up in this
> group :).
>
> i know how to use eagle. make layout with it. pcb (or FeCl) are easy to
> find here. the problems, chemicals such as positive 20 or dry film are
> hard to find here (not mention it's also expensive for hobbyist) :(. I
> need enlightenment on how to make simple, good quality pcb, anyway, one
> of my components is is TQFP chip, this is the hardest part...i've read
> some pages, but still haven't got a clue.
>
> need help/guide here :)
>
> thanks in advance
>
> regards
>
> PT.CITRA SARI MAKMUR
> SATELLITE & TERRESTRIAL NETWORK
>
> Connecting the distance - anytime, anywhere, any content
> http://www.csmcom.com
>
> 


[Non-text portions of this message have been removed]

hi vincentm thanks for reply

i think i'll give a try on toner transfer since the materials is not too 
hard to find. is it good for very tiny traces/pads?

thanks

On 1/18/2013 3:03 PM, Vicent Colomar Prats wrote:
> You can do a laser print and toner transfer way. Or, if you have acces to
> positive sensitized boards and muriatic acid, print in transparencies and
> develop with muriatic.
> I do this last way and quality is enought to do tqfp chips.
> In another hand, you can send your design to an online pcb manufacturer
> like iteadstudio.
>
>
> El viernes, 18 de enero de 2013, Hari Hendaryanto <hari.h@...>
> escribi\ufffd:
>>
>> hi,
>>
>> first of all, i'd like to thank to moderator for approving me joining
>> here :)
>>
>> my name is hari, i live in indonesia, jakarta, i work for
>> telecommunication company as system administrator engineer. my daily job
>> are maintaining servers.
>>
>> oneday my colleague showed propeller clock/text on youtube to me. I was
>> amazed, i began researching on how to make it. last thing i remember, i
>> put atmega module on cooling fan. LOL. succeed. but not fast enough to
>> prevent text from flickered. i need to make lighter mikrocontroller
>> module. i need to make custom pcb layout. that's why I ended up in this
>> group :).
>>
>> i know how to use eagle. make layout with it. pcb (or FeCl) are easy to
>> find here. the problems, chemicals such as positive 20 or dry film are
>> hard to find here (not mention it's also expensive for hobbyist) :(. I
>> need enlightenment on how to make simple, good quality pcb, anyway, one
>> of my components is is TQFP chip, this is the hardest part...i've read
>> some pages, but still haven't got a clue.
>>
>> need help/guide here :)
>>
>> thanks in advance
>>
>> regards
>>
>> PT.CITRA SARI MAKMUR
>> SATELLITE & TERRESTRIAL NETWORK
>>
>> Connecting the distance - anytime, anywhere, any content
>> http://www.csmcom.com
>>
>>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>

On 18/01/2013 03:46, Hari Hendaryanto wrote:
> hi,
>
> first of all, i'd like to thank to moderator for approving me joining
> here :)
>
> my name is hari, i live in indonesia, jakarta, i work for
> telecommunication company as system administrator engineer. my daily job
> are maintaining servers.
>
> oneday my colleague showed propeller clock/text on youtube to me. I was
> amazed, i began researching on how to make it. last thing i remember, i
> put atmega module on cooling fan. LOL. succeed. but not fast enough to
> prevent text from flickered. i need to make lighter mikrocontroller
> module. i need to make custom pcb layout. that's why I ended up in this
> group :).
>
> i know how to use eagle. make layout with it. pcb (or FeCl) are easy to
> find here. the problems, chemicals such as positive 20 or dry film are
> hard to find here (not mention it's also expensive for hobbyist) :(. I
> need enlightenment on how to make simple, good quality pcb, anyway, one
> of my components is is TQFP chip, this is the hardest part...i've read
> some pages, but still haven't got a clue.

http://forums.parallax.com/showthread.php/137896-Making-PCBs-at-home

Leon
-- 
Leon Heller
G1HSM

On Fri, Jan 18, 2013 at 11:46 AM, Hari Hendaryanto <hari.h@...> wrote:
>
> i need to make custom pcb layout.

Hello Hari, welcome to the group.

Here is the way I make PCBs at home.  It works well and I can make
PCBs in an hour:

  http://capnstech.blogspot.com/2011/05/playpause-making-pcbs-at-home.html

> chemicals such as positive 20 or dry film are
> hard to find here (not mention it's also expensive for hobbyist) :(. I
> need enlightenment on how to make simple, good quality pcb, anyway, one
> of my components is is TQFP chip, this is the hardest part...i've read
> some pages, but still haven't got a clue.

Regarding my method, the two special things you need are UV LEDs and
presensitised blank PCB.  Both are available on Ebay and don't cost
much.

Since this list allows the occasional commercial plug, I'd like to
mention that I'm a supplier of professional (not home-made) PCBs for
hobbyists.  I can do 10 boards for USD19, including shipping
worldwide.  My advantage is that you can come and live chat with me
and dozens of my customers 24 hours a day, about PCBs (including
getting a review of your latest design), electronics, open source
hardware, brewing beer, rocketry, high altitude ballooning, or
anything technical that takes your fancy.  Home-made boards is fine,
and you don't have to be a customer, just come:

  http://webchat.freenode.net/?channels=hackvana

My regards, and all the best with your project.

Mitch.

If you want to do very fine pitch with toner transfer, you will need good transfer media like Pulsar pro paper or Vinyl as was mentioned in some topics here recently.

You will also need a high resolution laser printer, in good working order.

Finally, you should apply the toner to the board with a laminator or such, if you try to use a clothes iron you will likely have a hard time getting it right, especially with very fine pitch parts.

With good quality materials and tools it will not be impossible, but with the photo-resist method it might be easier.

Then you need transparencies instead of transfer paper, some UV resist (if you can't get it locally, you can always go to eBay. Boards with UV resist pre-applied may actually work out cheaper\better), a UV light source (if nothing else, you may get away with strong sunlight! - but there are many cheap ways you can make a UV exposure box - I used UV LEDs), and some developer. 

I found that standard Washing Soda (Sodium Carbonate) worked great for developer. This was the crucial part for me, as any "proper" developer solution available locally (and on eBay) was very expensive. A box of Washing Soda is very cheap.

--- In Homebrew_PCBs@yahoogroups.com, Hari Hendaryanto  wrote:

>
> hi vincentm thanks for reply
> 
> i think i'll give a try on toner transfer since the materials is not too 
> hard to find. is it good for very tiny traces/pads?
> 
> thanks
> 
> On 1/18/2013 3:03 PM, Vicent Colomar Prats wrote:
> > You can do a laser print and toner transfer way. Or, if you have acces to
> > positive sensitized boards and muriatic acid, print in transparencies and
> > develop with muriatic.
> > I do this last way and quality is enought to do tqfp chips.
> > In another hand, you can send your design to an online pcb manufacturer
> > like iteadstudio.
> >
> >
> > El viernes, 18 de enero de 2013, Hari Hendaryanto 
> > escribió:
> >>
> >> hi,
> >>
> >> first of all, i'd like to thank to moderator for approving me joining
> >> here :)
> >>
> >> my name is hari, i live in indonesia, jakarta, i work for
> >> telecommunication company as system administrator engineer. my daily job
> >> are maintaining servers.
> >>
> >> oneday my colleague showed propeller clock/text on youtube to me. I was
> >> amazed, i began researching on how to make it. last thing i remember, i
> >> put atmega module on cooling fan. LOL. succeed. but not fast enough to
> >> prevent text from flickered. i need to make lighter mikrocontroller
> >> module. i need to make custom pcb layout. that's why I ended up in this
> >> group :).
> >>
> >> i know how to use eagle. make layout with it. pcb (or FeCl) are easy to
> >> find here. the problems, chemicals such as positive 20 or dry film are
> >> hard to find here (not mention it's also expensive for hobbyist) :(. I
> >> need enlightenment on how to make simple, good quality pcb, anyway, one
> >> of my components is is TQFP chip, this is the hardest part...i've read
> >> some pages, but still haven't got a clue.
> >>
> >> need help/guide here :)
> >>
> >> thanks in advance
> >>
> >> regards
> >>
> >> PT.CITRA SARI MAKMUR
> >> SATELLITE & TERRESTRIAL NETWORK
> >>
> >> Connecting the distance - anytime, anywhere, any content
> >> http://www.csmcom.com
> >>
> >>
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
> >
>

--- In Homebrew_PCBs@yahoogroups.com, Hari Hendaryanto  wrote:
>
:(. I 
> need enlightenment on how to make simple, good quality pcb, anyway, one 
> of my components is is TQFP chip, this is the hardest part...i've read 
> some pages, but still haven't got a clue.
> 
> need help/guide here :)
> 

You can try laser toner transfer.  I have not done anything as fine as TQFP but you can see my double sided board project last summer using toner transfer and HCl/H2O2 etch at http://wb8nbs.wordpress.com/.  I have a 12 year old Lexmark 4039 10+ laser printer.  The traces came out clean enough that I think TQFP is possible.

hi guys,

thanks for all reponses and links, it's very helpful to me.
i'll read all those links very carefully.

regards

hari

On 1/18/2013 10:14 PM, Mitch Davis wrote:
>
> On Fri, Jan 18, 2013 at 11:46 AM, Hari Hendaryanto hari.h@... 
> <mailto:hari.h%40csmcom.com>> wrote:
> >
> > i need to make custom pcb layout.
>
> Hello Hari, welcome to the group.
>
> Here is the way I make PCBs at home. It works well and I can make
> PCBs in an hour:
>
> http://capnstech.blogspot.com/2011/05/playpause-making-pcbs-at-home.html
>
> > chemicals such as positive 20 or dry film are
> > hard to find here (not mention it's also expensive for hobbyist) :(. I
> > need enlightenment on how to make simple, good quality pcb, anyway, one
> > of my components is is TQFP chip, this is the hardest part...i've read
> > some pages, but still haven't got a clue.
>
> Regarding my method, the two special things you need are UV LEDs and
> presensitised blank PCB. Both are available on Ebay and don't cost
> much.
>
> Since this list allows the occasional commercial plug, I'd like to
> mention that I'm a supplier of professional (not home-made) PCBs for
> hobbyists. I can do 10 boards for USD19, including shipping
> worldwide. My advantage is that you can come and live chat with me
> and dozens of my customers 24 hours a day, about PCBs (including
> getting a review of your latest design), electronics, open source
> hardware, brewing beer, rocketry, high altitude ballooning, or
> anything technical that takes your fancy. Home-made boards is fine,
> and you don't have to be a customer, just come:
>
> http://webchat.freenode.net/?channels=hackvana
>
> My regards, and all the best with your project.
>
> Mitch.
>
>



[Non-text portions of this message have been removed]