Re: [Homebrew_PCBs] Re: Eagle software users - a must read.
2007-10-24 by Stefan Trethan
Hi Markus, nice to hear from you again. I agree, Eagle is definitely a bit backward, and having the option of user ULPs does not mean you don t have to offer a
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Re: Eagle software users - a must read.
2007-10-24 by markuszingg
I ve been absent to this group for a very long time, but now that I m a bit more back into the business of makeing PCBs I returned just to see that you guys
Re: [Homebrew_PCBs] Re: soldering question
2007-10-24 by Stefan Trethan
The problem with the hotplate is that it won t work on PCBs with SMDs on both sides, or will it? ST
Re: [Homebrew_PCBs] Re: soldering question
2007-10-24 by DJ Delorie
... So sparkfun says, and I agree. Get a cheap hotplate or electric frying pan, and a syringe of paste (I use SynTECH - no refridgeration needed). Apply
Re: [Homebrew_PCBs] Re: soldering question
2007-10-23 by DJ Delorie
... So they do! That s new since I last checked thm out. ... Hence my hotplate. But if you can do that, you can just use that to do the soldering too.
Re: [Homebrew_PCBs] Re: soldering question
2007-10-23 by Bryan Pope
... So I should solder PCBs with SMT on a warm frying pan? Cheers, Bryan
Re: soldering question
2007-10-23 by Steve
... Actually, that tutorial did specifically use an SMT IC with a thermal pad. Check out the videos on Page 7. I ve not done this yet, but I think I d feel
Re: TT Technique??
2007-10-23 by bagmik
Do you have an exact reference for the HammerMill paper you use ? I m living in belgium and I would like to give it a try by ordering it on the net. Mike
Re: TT Technique??
2007-10-23 by bagmik
I strongly recommend you to use a laminator, one you buy or you build from an old laser printer. It must be able to go to 200°C and you can always modify its
Re: [Homebrew_PCBs] Re: soldering question
2007-10-23 by DJ Delorie
... The one thing those tutorials don t cover is chips with thermal pads, which is what the OP is trying to solder. You need a way to get heat *under* the
Re: [Homebrew_PCBs] soldering question
2007-10-23 by Stefan Trethan
Oh well, so it s OKI, which owns Metcal, that is selling chep gear for big $$. People will notice it s not quite the same quality... ST
Re: [Homebrew_PCBs] soldering question
2007-10-23 by Leon
... From: Stefan Trethan To: Sent: Tuesday, October 23, 2007 2:17 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] soldering question
2007-10-23 by Stefan Trethan
The HCT-900-21 from Metcal, which aoyue matches it best i dunno (950 maybe), several are pretty much the same just with different options (displays etc.) and 2
Re: [Homebrew_PCBs] soldering question
2007-10-23 by Leon
... From: Stefan Trethan To: Sent: Tuesday, October 23, 2007 10:49 AM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] soldering question
2007-10-23 by Stefan Trethan
Regarding Metcal: I am sure the metcal hot air station comes from the same production line in china as the AOYUE units. It only has a different front panel,
Re: [Homebrew_PCBs] soldering question
2007-10-23 by Leon
... From: DJ Delorie To: Sent: Tuesday, October 23, 2007 6:22 AM Subject: Re: [Homebrew_PCBs] soldering
Re: [Homebrew_PCBs] soldering question
2007-10-23 by DJ Delorie
... Alternative if you can t do reflow - put a BIG via under the pad; big enough for you to solder the pad from the other side, through the hole. Only works
Re: soldering question
2007-10-22 by clayton.gilmore
I haven t yet soldered any SMD IC s myself, but this tutorial may be of help: http://www.sparkfun.com/commerce/present.php?p=SMD-HowTo-1 or
Re: [Homebrew_PCBs] soldering question
2007-10-22 by DJ Delorie
... Ah, a QFN with a thermal pad. I ve done those with the hotplate, but it s critical to get the right amount of paste down. ... Rightly so, the thermal pad
Re: [Homebrew_PCBs] soldering question
2007-10-22 by randeel wimalagunarathne
... ic is trf 7960 1. its (s-pqfp-n32) 2. no haven t made a board for it. because we are confused about soldering this tiny IC. 3. it s the normal soldering
Re: Eagle software users - a must read.
2007-10-21 by calvingrier
It seems to me that eagle has a good package but they are being overtaken by other, easier to learn tools. Eagle is trying to defend their turf. I personally
Web-Cam Viewer
2007-10-21 by joe price
I remember seeing a thread on using a Web-Cam as a viewer for PC construction but can t find the thread. Anyonr tried this or know thread number? Thanks Joe
Re: [Homebrew_PCBs] soldering question
2007-10-21 by DJ Delorie
... Two questions: 1. What chip is it? I mean, does it have leads or just pads, is it bga, qfp, qfn, csp, etc? A specific part number is best. 2. Have you
Re: [Homebrew_PCBs] soldering question
2007-10-21 by Leon
... From: randeel wimalagunarathne To: Sent: Sunday, October 21, 2007 3:17 PM Subject: [Homebrew_PCBs]
soldering question
2007-10-21 by randeel wimalagunarathne
hi, i have a ic that has a dimension of 5mm*5mm*1mm . it has 32 pins it is surface mount. what are the options available to solder this IC.(because this is so
Re: [Homebrew_PCBs] how dark must a photomask be?
2007-10-21 by Leon
... From: halfintegerspin To: Sent: Saturday, October 20, 2007 8:17 PM Subject: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Re: cutting SMALL! PCB's
2007-10-20 by Cristian
... Try to heat a little with a hair dryer that paper/resin to get better results. Cristian
how dark must a photomask be?
2007-10-20 by halfintegerspin
I tried photo resist. I sprayed the board myself using positiv 20 and left it to cure for a few days. I printed a few masks on transparency with a laserjet.
Re: cutting SMALL! PCB's
2007-10-20 by Chris Horne
I regularly cut 100 or so of a board 2 x 1/2 and I use exactly that kind of paper cutting Guillotine, but it s quite old, maybe 30 years or so, and the
Re: [Homebrew_PCBs] cutting SMALL! PCB's
2007-10-19 by Harvey White
... Those are quite small. ... My experience is that the cut can wander, which does not help you a bit. ... I have a mill and various pieces of machining
Re: cutting SMALL! PCB's
2007-10-19 by timbomcnuckle
alternatly, if you are on a tight budget like me just use some scissors- I do all the time to cut pcbs large and as small as ~1cm(2). The only problem with
Re: [Homebrew_PCBs] cutting SMALL! PCB's
2007-10-19 by DJ Delorie
Having done PCBs down to 0.2 wide, I pass on what I do... First, I use a scroll saw with a jeweler s blade (0/2) in it. This is only about 10 thou thick. I
Re: cutting SMALL! PCB's
2007-10-19 by noltstein
... that will work for this application. ... http://www.ares-server.com/Ares/Ares.asp?MerchantID=RET01229&Action=Catalog&Type=Product&ID=50304 ... Just make
Re: [Homebrew_PCBs] cutting SMALL! PCB's
2007-10-19 by Kim Vellore
Greg, If you are willing to invest in tools, here is a mini table saw that will work for this application.
cutting SMALL! PCB's
2007-10-19 by Greg Codori
I am going to get started on a new project that requires very small PCB s. As the subject states - what s the best method of cutting PCB s to the size listed
Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-19 by michael tenore
1- I use a Dry Iron! The bottom is FLAT with no holes or dimples! Price $10 2- I use Staples Photo basic inkjet paper. 3- I print the image on the paper! Then
Re: TT Technique??
2007-10-19 by eballiri
I had forgotten, I don t use ay sort of special TT paper, just the common 90 gr sheets that I use for printing anything at home....
Re: TT Technique??
2007-10-19 by eballiri
I ve made several PCBs with TT and must say that the last ones are getting really good. The most important tips I ve been following are this: DO s 1.- clean
Re: [SPAM] Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-19 by Bernie Fernandez
thanks for the information my friend. it sounds so interesting. Felipe Baldner wrote: Hi Bernie. Yes, it s exactly what you
Re: Mounting Liquid Crystal Displays
2007-10-18 by Steve
... But they are for more than that, since I m not limiting this to just the elastomer/zebra strip connectors. For now, I ve called the folder Connectors -
Re: [Homebrew_PCBs] Re: Mounting Liquid Crystal Displays
2007-10-18 by Myc Holmes
Another tradename for the elastomeric connectors is Zebra Strip . Myc ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: Mounting Liquid Crystal Displays
2007-10-18 by Leon
... From: Steve To: Sent: Wednesday, October 17, 2007 11:48 PM Subject: [Homebrew_PCBs] Re: Mounting
Re: RES: [SPAM] Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-18 by Bob Macklin
At first I was trying to hold the iron in place for 5 minutes. I would only get partial transfers. My PCB is 1X3 inches. The bottom of my iron has a large
RES: [SPAM] Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-18 by mark.mickelsen
Bob, Please tells how you get 100% results with your TT method. Inquiring minds want to know. Thanks, Mark
RES: RES: [SPAM] Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-18 by Felipe Baldner
Well... care to share the method? :) -- []´s Felipe Baldner fbaldner@gmail.com _____ De: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
RES: [SPAM] Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-17 by Felipe Baldner
You mean the acetone simply made the toner go from the paper to the copper? Hmm interesting... do you have a link to that webpage? I d like to see that... --
Re: RES: [SPAM] Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-17 by Bob Macklin
I have too many links to be able to find it easily. Just try it. It s the process to move a toner image to another object like a decal. But then you have to
Re: Mounting Liquid Crystal Displays
2007-10-17 by Steve
... Hm... I d like to start a folder in Links for elastomer connectors and the directionally conductive tape. Suggestions on what to name the folder? Steve
Re: [SPAM] Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-17 by DJ Delorie
... Maybe it needs heat to evaporate the solvent again? In that case, just baking or heat-gunning the pcb (no paper) would do.
Re: [SPAM] Re: [Homebrew_PCBs] Re: TT Technique??
2007-10-17 by Bob Macklin
I read something on a web page about transfering the image with a solvent pen. I tried it with acetone and the image transfered very nicely. But it was not