Re: [Homebrew_PCBs] basic basics of boards
2003-09-21 by Leon Heller
... Square pads generally indicate pin 1 on a component. I don t think it is used much these days, as it takes up too much area. ... For my home made PCBs I go
Messages
Browse messages
Page 655 of 707 · 35337 messages matched
Re: [Homebrew_PCBs] basic basics of boards
2003-09-21 by Stefan Trethan
On Sun, 21 Sep 2003 14:24:05 -0000, Dave Mucha ... you can design all these things like you want them. like it makes best sense for you.
basic basics of boards
2003-09-21 by Dave Mucha
Hi all, I was wondering it there is an introduction to basics of schematics and board design? Things like what polarity is the square pad on an LED ? Why 15
Re: [Homebrew_PCBs] Re: Toaster oven reflow for SMT devices
2003-09-21 by Stefan Trethan
On Sun, 21 Sep 2003 13:08:17 -0000, Dave Mucha ... yes but we definitely don t want to damage any parts by heat. if you wait until a
0.5mm pad spacing with a LaserJet IIIp
2003-09-21 by leon_heller
I didn t expect it to work, but I ve just managed a PCB for a TSOP packaged device with 0.5 mm pad spacing, printing the artwork on my LaserJet IIIp. The pads
Re: Toaster oven reflow for SMT devices
2003-09-21 by Dave Mucha
... so much ... Not having any experiance with this method, from what I have read, the surface tension of the solder and the chip will acutually pull the chip
Re: [Homebrew_PCBs] colophony resin in laquer thinner
2003-09-21 by Stefan Trethan
which tip has this pen? which color has the ink? maybe i really have to search this bottle of fe3cl... and then try different inks. The problem with using pens
Re: Toaster oven reflow for SMT devices
2003-09-21 by caveteursus
It was a $29 Black and Decker toaster oven -- the N&V article had several specific models they had tested, but none were available here in New Jersey. I find
Re: [Homebrew_PCBs] colophony resin in laquer thinner
2003-09-21 by Don Perry
Here s what works for me, I use a HP 7475 pen plotter with a slot cut in the case. I use a GC #22-222 Etch Resist Ink Pen. 1/64 tip. Its fitted into a
Re: Printing resist directly onto PCBs
2003-09-20 by wheedal99
There are other color ribbons. Only one can be used at a time though. I thought I was being ironic; .75 x 3 isn t a very usable size. I can try to do
Re: [Homebrew_PCBs] Re: Toaster oven reflow for SMT devices
2003-09-20 by Stefan Trethan
but how did you get the oil off after? i mean this sounds very messy... but a interesting idea to use another heating medium than air. may be much faster and
Re: [Homebrew_PCBs] Re: Printing resist directly onto PCBs
2003-09-20 by Stefan Trethan
On Sat, 20 Sep 2003 16:21:13 -0000, wheedal99 ... I think last issue of local pc magazine tested this cd printer.. is it black only?
Re: For those of you in Silicon Valley
2003-09-20 by wheedal99
... websites. Yeh, but the in this context I thought it was priceless -- Look schmart and mispell the rest... ... That was a mystery to me too. The site
Re: Printing resist directly onto PCBs
2003-09-20 by wheedal99
Well, My father actually got one when I showed him this (he has a home recording studio and doesn t like the CD s his epson inkjet based CD printer makes him
Re: [Homebrew_PCBs] Re: Toaster oven reflow for SMT devices
2003-09-20 by Don Perry
Reading your letter, I thought I might throw this out to you, years ago I used to reflow poor solder cards by heating peanut oil, yes peanut oil, in a flat
Re: [Homebrew_PCBs] Re: Toaster oven reflow for SMT devices
2003-09-20 by Stefan Trethan
... I once used a smd toaster in school. It was a small unit for pcb size maybe 150 x 200 maximum (yes these are metric mm). The trick is not to put the pcb
Re: [Homebrew_PCBs] Re: Toaster oven reflow for SMT devices
2003-09-20 by Markus Zingg
... Thanks for the link - looks good :) Do you also have a picture of the oven itself? I m asking cause the oven you use is likely not to be available where I
Re: Toaster oven reflow for SMT devices
2003-09-20 by Steve
... http://www.diyaudio.com/forums/showthread.php?s=&threadid=13023&perpage=15&highlight=toaster&pagenumber=2 Here s that link using TinyURL.com:
Re: Toaster oven reflow for SMT devices
2003-09-20 by caveteursus
you have to append the second line of the URL, or just search under TOASTER using the DIYAUDIO search engine. jack ... bit
Re: Toaster oven reflow for SMT devices
2003-09-20 by caveteursus
I hope this link takes -- it s a pic of the toaster oven PCB in progress -- as you can see one of the 2k resistors slid a little bit when I removed the board
Re: [Homebrew_PCBs] Re: For those of you in Silicon Valley
2003-09-19 by Markus Zingg
... Well, seems so, but let s wait some more cause maybe they re just out for a party :) Markus
[Homebrew_PCBs] colophony resin in laquer thinner
2003-09-19 by Stefan Trethan
@Dave thanks for the tip with laquer thinner for solving colophony resin. i tried it and it is much better than alcohol. The laquer is the same density /
Re: [Homebrew_PCBs] Re: Protecting copper surface(newbie)?
2003-09-19 by Stefan Trethan
On Fri, 19 Sep 2003 20:54:53 -0000, Dave Mucha ... I fear we get no more information on this. just like Markus and his patent number ;-)
Re: Protecting copper surface(newbie)?
2003-09-19 by Dave Mucha
... clear ... If I read your post correctly, 200 amps ? I don t think the COPPER will do the job. or, you got one heck of a trace there. As far as protecting
Re: Protecting copper surface(newbie)?
2003-09-19 by Dave Mucha
... clear ... If I read your post correctly, 200 amps ? I don t think the COPPER will do the job. or, you got one heck of a trace there. As far as protecting
Re: For those of you in Silicon Valley
2003-09-19 by Dave Mucha
... You may ask, but it seems like no one is home.
Re: [Homebrew_PCBs] Re: For those of you in Silicon Valley
2003-09-19 by Stefan Trethan
... i think these are simply breadboards. from what they show on the page and what the pdfs show it are breadboards with some pins connected . i don t think
Re: For those of you in Silicon Valley
2003-09-19 by Steve
... Ah, I see it now, on the Products page of their site. ... But what do you think of what they are selling? Steve
Re: For those of you in Silicon Valley
2003-09-19 by Steve
... I m not happy that it looks like an automated email. I hope that doesn t mean they ve signed the list address up to a newsletter. I don t see where it says
Re: [Homebrew_PCBs] Re: Picture of device for holding SMDs while soldering
2003-09-19 by Adam Seychell
... I m a SMD convert too :). Even with the small amount of practice so far, I m finding it a lot better overall to build home projects in SMD. Honestly, I
Re: [Homebrew_PCBs] Protecting copper surface(newbie)?
2003-09-19 by Adam Seychell
For the group to help, you might like to mention what it is you want the copper protected from.
Re: For those of you in Silicon Valley
2003-09-18 by wheedal99
... Look Schmart, Be The Envy Of Your Freinds --Spell checkers never hurt when you are trying to publicly sell something. Maybe a shorter ad email would
Re: Protecting copper surface(newbie)?
2003-09-18 by wheedal99
first PCB and 200A sounds a bit scary. What are you trying to protect the copper from? Probably need a little more info on what you are trying to do...
Re: [Homebrew_PCBs] For those of you in Silicon Valley
2003-09-18 by Markus Zingg
... May I ask you what the patent number is? Markus
For those of you in Silicon Valley
2003-09-18 by Neal Greenberg
We still have some openings If interested let me know Neal.greenberg@schmartboard.com Hello: We are ready to bring our SchmartBOARD prototyping tool to
Re: Toaster oven reflow for SMT devices
2003-09-18 by Steve
... What did ... FYI, I keep seeing people posting the email address for groups rather than the group site. You can get to the group site like this:
Re: [Homebrew_PCBs] Protecting copper surface(newbie)?
2003-09-18 by Stefan Trethan
i have no idea what you are talking of. what has the current to do with the protection? the protection is for corrosion prevention. or do you mean the etch
Protecting copper surface(newbie)?
2003-09-18 by sogilo
I am trying to bake my first PCB, the thing is I don t know how to protect copper surface. Some says Sprayed with a thin coat of clear lacquer but my
Re: [Homebrew_PCBs] Toaster oven reflow for SMT devices
2003-09-18 by Leon Heller
... In one of the web pages describing this toaster oven technique, PQFP devices simply have a narrow ribbon of paste applied across the pads. A few shorts
Re: [Homebrew_PCBs] Toaster oven reflow for SMT devices
2003-09-17 by JanRwl@AOL.COM
In a message dated 9/17/2003 2:05:09 AM Central Standard Time, ... John: This only results in an invitation to join any Yahoo group! What did you leave out?
Re: [Homebrew_PCBs] Online sources for clad and Ferric Chloride
2003-09-17 by GraySoul Dragon
... Board: Jan-Erik Soderholm ... That seems a very good deal to me; I m getting three of each. -Dan Barlow
Re: Picture of device for holding SMDs while soldering
2003-09-17 by Mike Cowlishaw
... You re welcome. Let us know how it works for you... I m now an SMD convert; it s so much faster to assemble a board like this than to use through-hole...
Re: Picture of device for holding SMDs while soldering
2003-09-17 by Mike Cowlishaw
... Yes, that s the idea. With the small devices, I place and solder one end of all of them, using the hold-down wire. Then I just use the hold-down to
Re: [Homebrew_PCBs] Toaster oven reflow for SMT devices
2003-09-17 by Markus Zingg
... I would have loved to take a look at this, but what a stupid forum! No chance to find a post efficiently! Do you have a way for me to identify your post?
RE: [Homebrew_PCBs] Toaster oven reflow for SMT devices
2003-09-17 by John Craddock
See the following group for more information mailto:E-Z_Bake@yahoogroups.com HTH JC ... From: caveteursus [mailto:j.walton@amlp.com] Sent: Wednesday, 17
Re: [Homebrew_PCBs] Picture of device for holding SMDs while soldering
2003-09-17 by Adam Seychell
... Looks simple to make. Thanks for the photo. I will make one of these tools when I start my next SMD project. I ve actualy got a bunch of 1.0 mm spring wire
Online sources for clad and Ferric Chloride
2003-09-17 by Moore
Can anybody point me in the direction of inexpensive board and etchant? Thanks, Phil
Toaster oven reflow for SMT devices
2003-09-17 by caveteursus
motivated by the Nuts and Volts article I went out and bought a $29 Black and Decker toaster oven, and then from Digikey some of the syringe solder paste ($40,
Re: [Homebrew_PCBs] Picture of device for holding SMDs while soldering
2003-09-15 by Stefan Trethan
i think with that wire and that tip it is quite difficult to hold down a 0805 case? or do you hold it on one end of the case while soldering the free one?
Picture of device for holding SMDs while soldering
2003-09-14 by Mike Cowlishaw
My ASCII art obviously wasn t adequate, judging by the number of people e-mailing me for more details :-), so I have put a picture on the web. It is at: