Re: [Homebrew_PCBs] Re: Surface Mount
2009-02-23 by Stefan Trethan
Well you seem to be the only one able to make 1 to 3 mil lines with TT. Please describe what printer you use, what etchant, and what precedure. I m sure most
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Re: [Homebrew_PCBs] Re: Surface Mount
2009-02-23 by Derward Myrick
PHIL, I make my regular run up to the smd and then I go with a 1 to 3 mil line through the smd and then go back to the regular trace. This will eliminate nost
Re: Two followup newbie questions: making boxes, and aligning layers
2009-02-23 by pgdion1
I use the old reliable method. I place 3 fiducials on the board for alignment holes near the corners of the board. Two are for alignment and the third is a
Re: [Homebrew_PCBs] Re: Surface Mount
2009-02-23 by Myc Holmes
Hi Phil, I agree with you on all points. There is one gotcha with surface mount -- it is more difficult to layout the pcb since placing tracks between the
Re: Surface Mount
2009-02-23 by pgdion1
Hi Jerry, Once you get used to SMD, you ll never want to do through hole again! I try to minimize all holes just to save drilling (which for me is the biggest
Re: New member checking in
2009-02-23 by pgdion1
I think the trick here is to flux the whole board, I use just a little paste flux and smear it over the whole board with my finger, and then just a little
Re: [Homebrew_PCBs] Surface Mount
2009-02-23 by Dylan Smith
... Yes and yes. I used to do drag soldering but the problem I found was after carefully lining up the IC, it was very easy to knock it out of alignment with
Re: [Homebrew_PCBs] Surface Mount
2009-02-23 by Stefan Trethan
Well, obviously experiences and opinions will vary as always. Your method involving the two irons seems awfully complicated compared to paste.... ST
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2009-02-23 by ivyz@ymail.com
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Re: [Homebrew_PCBs] Re: New member checking in
2009-02-22 by Piers Goodhew
... Yup, Q-tip clone, so it s still plenty of work (but I know the mask coverage is pretty perfect). I then tin the pads fairly generously and *then* drill,
Re: [Homebrew_PCBs] Surface Mount
2009-02-22 by Adam Seychell
... Do you apply a continuous trail of solder paste along each row of pads of a quad plat pack IC ? If so you you use a syringe to apply the paste ?. I found
Re: [Homebrew_PCBs] Surface Mount
2009-02-22 by Dylan Smith
... 10/10 is not too difficult, one of my first toner transfer PCBs were 10/10. I ve since got down to 8/8 (for 0.4mm pitch LQFP). I find hot air and solder
Re: [Homebrew_PCBs] Two followup newbie questions: making boxes, and aligning layers
2009-02-22 by Harvey White
... I tend to use aluminum, and since I don t weld, resort to tapped holes and screws. The latest project has a case about 8 inches wide, 2 1/2 inches deep,
Two followup newbie questions: making boxes, and aligning layers
2009-02-22 by awakephd
As a followup to my recent introduction and questions, I ve got two more questions (well, two more for now ... !) 1) How many of you fabricate your own boxes
Re: New member checking in
2009-02-22 by awakephd
... Piers, how do you get the toner off selectively? Do you use a Q-tip (cotton swab) or something like that? I removed the toner with acetone on a paper towel
Re: [Homebrew_PCBs] Re: New member checking in
2009-02-22 by Piers Goodhew
... I ve taken to leaving the toner on the parts I m not going to solder - as a solder mask of sorts. Means I only have to tin the pads which are going to
Re: OT - prototype source
2009-02-21 by boons007
Sorry i ment - Advanced Circuits, www.4pcb.com Forrest Arndt Regional Sales Manager Advanced Circuits 800-979-4722 ext 1306 21101 E 32nd Parkway Aurora, CO
Re: OT - prototype source
2009-02-21 by boons007
Try advanced PCB, they have the $33 board , buy 4 get 1 free. BoonS ... outsourced ...
Re: New member checking in
2009-02-21 by awakephd
... a lot of time and some initiative... Very noticeable sums of money and effort is spared, but a lot of satisfaction gained! ( Depending ofcourse on, how
Re: [Homebrew_PCBs] Surface Mount
2009-02-21 by Erik Knise
Leon, Besides that when I learned this method they called it Zip Soldering ... plenty of excess on the soldering iron to solder the last few pins. ... -- Erik
Re: [Homebrew_PCBs] Surface Mount
2009-02-21 by leon Heller
... From: Stefan Trethan To: Sent: Saturday, February 21, 2009 3:06 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Surface Mount
2009-02-21 by Stefan Trethan
The mini hoof probably pulls the excess solder from the last two pins into the hoof where a normal iron will not. One tip for drag-soldering with a normal
Re: [Homebrew_PCBs] Surface Mount
2009-02-21 by leon Heller
... From: Derward Myrick To: Cc: Sent: Saturday, February 21, 2009 2:14 AM
Re: [Homebrew_PCBs] Surface Mount
2009-02-21 by leon Heller
... From: DJ Delorie To: Sent: Saturday, February 21, 2009 12:45 AM Subject: Re: [Homebrew_PCBs] Surface
Re: [Homebrew_PCBs] OT - prototype source
2009-02-21 by leon Heller
... From: Mark Lerman To: Sent: Friday, February 20, 2009 11:36 PM Subject: [Homebrew_PCBs] OT -
Re: [Homebrew_PCBs] New member checking in
2009-02-21 by KeepIt SimpleStupid
Many Many years ago, I think there was a product called Circuit stik or something which came with rolls of copper tape to make traces and adhesive pads etc.
Re: [Homebrew_PCBs] New member checking in
2009-02-21 by James Bishop
Yes I think its possible, although difficult for fine detailed work. I like the idea of Manhattan style construction. I ve never tried it, but it seems to be
Re: [Homebrew_PCBs] Surface Mount
2009-02-21 by Derward Myrick
Leon, I use the TT method and with care I can do 1 mil lines. I can do 3mill without problems. This is how I make the boards. The best solution I have ever
Re: [Homebrew_PCBs] OT - prototype source
2009-02-21 by mlerman@ix.netcom.com
Maybe - I m at 8/8 on this board, but I ll take a look at them. Thanks! Mark
Re: [Homebrew_PCBs] OT - prototype source
2009-02-21 by DJ Delorie
www.pcb-pool.com can do that tech, but they have a minimum order of 16 sq in. You can order 16 of your board, I suppose. Batchpcb s 4-layer service would be
Re: [Homebrew_PCBs] Surface Mount
2009-02-21 by DJ Delorie
... IIRC the only bridging I get is on the last two pins of a swipe because there s nothing after the last pin to suck the solder blob along. I guess with
Re: [Homebrew_PCBs] OT - prototype source
2009-02-21 by Adam Seychell
Mark Lerman wrote: Does anyone ... I was going to suggest http://www.futurlec.com/PCBTechnical.shtml but their minimum hole size is 0.6mm (0.015 ). will that
OT - prototype source
2009-02-20 by Mark Lerman
Yes, I know this is Homebrew_PCB, but I have a need for an outsourced board because of the 50 or so very small vias (13-14 mil holes) in a 25 mm square board
Re: [Homebrew_PCBs] Surface Mount
2009-02-20 by leon Heller
... From: DJ Delorie To: Sent: Friday, February 20, 2009 11:06 PM Subject: Re: [Homebrew_PCBs] Surface Mount
Re: [Homebrew_PCBs] Surface Mount
2009-02-20 by DJ Delorie
... I ve found that drag soldering is MUCH more reliable if I pen-flux the bottom of the pins on the part, as well as the board. It just sucks the solder
Re: [Homebrew_PCBs] New member checking in
2009-02-20 by aimo ruoho
I am a new member also. Hello folks! I got an idea. Can it be possible to make a PCB by cutting narrow strips from an aluminium ( or even better, copper)
Re: [Homebrew_PCBs] Surface Mount
2009-02-20 by leon Heller
... From: Harvey White To: Sent: Friday, February 20, 2009 9:01 PM Subject: Re: [Homebrew_PCBs]
Re: Surface Mount
2009-02-20 by jerrytr2.com
So I have been dragged kicking ... *** It sure has come a long way since the 6V6GT s and 5U4GB s of my youth... ... and ... *** I bought the $10 ebay tweezers.
Re: [Homebrew_PCBs] Surface Mount
2009-02-20 by leon Heller
... From: jerrytr2.com To: Sent: Friday, February 20, 2009 8:27 PM Subject: [Homebrew_PCBs] Surface Mount ...
Re: [Homebrew_PCBs] Surface Mount
2009-02-20 by Stefan Trethan
It will be just fine Jerry. I ve done 0.5mm spacing a number of times. The trick is to make slightly narrower pads than spaces. Something like 6.66mil or 8mil
Re: [Homebrew_PCBs] Surface Mount
2009-02-20 by Harvey White
... I m roughly at 10 mils, 12 is run of the mil..... ... Ain t Technology wonderful? ... Yeah, now try to measure them. Seems to be the 50 dollar solution
Surface Mount
2009-02-20 by jerrytr2.com
Hello, Since encountering this group a month or so ago, I have refined my toner transfer process to the point that I am able to reliably do 15- mil traces.
Re: PCB Antenna
2009-02-20 by Steve
I think we all saw that. Steve Greenfield ... and paste in the full URL below into the new search,for each file, it returns the PDFs. ... several that ...
Re: New member checking in
2009-02-20 by pgdion1
... Hi Andy, the boards look pretty good. I started using toner transfer about a year ago after stumbling on this group. I had tried it before over 10 years
Re: [Homebrew_PCBs] New member checking in
2009-02-20 by DJ Delorie
You can buy liquid tin or other chemical tinners where you just soak the board in the chemical and it tins any exposed copper.
Re: [Homebrew_PCBs] Re: PCB Antenna
2009-02-20 by Malcolm Parker-Lisberg
To repeat the message I sent on 9th Feb If you go to http://www.archive.org and click on the advanced search and paste in the full URL below into the new
Re: PCB Antenna
2009-02-20 by Steve
Look in Microchip s App Notes under rfPIC, they have several that cover PCB antenna design for that band.
New member checking in
2009-02-20 by awakephd
I found this group a few days ago and have been poking around -- thanks for the tremendous resource! The information here has already helped me to make my most
Re: Which PCB CAD for someone entering the job market?
2009-02-19 by phildimond
Not that this has anything to actually do with Homebrew PCBs, but this is the problem with outsourcing. Simple economics and risk management are lost in this
Re: Which PCB CAD for someone entering the job market?
2009-02-18 by boons007
True altium designer is the next generation sort of like Horse and Buggy transformeation to the Car... the Omish still do use the horse and buggy... Protel the