Photoresist
2011-12-26 by Robert
Hi, it s been years since I made my first circuit boards the old fashioned way, carefully tracing over the artwork with a sheet of carbon paper underneath onto
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Re: [Homebrew_PCBs] Re: PCB holder
2011-12-26 by Harvey White
On Mon, 26 Dec 2011 09:44:59 +0100, you wrote: ... I don t use solder mask because I have no good way to apply it. My laser cutting stencil machine
Re: PCB holder
2011-12-26 by clausundercover
I m using the more familiar eclipse-based code composer studio. There s an automated walkthrough when you open the software. One thing that was strange is that
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-26 by Donald H Locker
is the Panavise model 315 circuit board holder page. I loved this fixture with a
RE: [Homebrew_PCBs] Re: PCB holder
2011-12-26 by Boman33
The design is OK if the only goal is to hold a stationary PCB. On a practical side it is usually desirable to be able to quickly alternate between top and
Re ESD
2011-12-26 by Stephen Farthing
Hi Guys, Interesting debate. I don t really pay that much attention to ESD in the workshop but I am an amateur not a professional......I probably destroy more
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-26 by Kevin Impson
Hi Guys, Has anybody thought about maybe helping the original poster of this thread, by maybe suggestion to him to make the design he showed ESD safe? Or, I
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-26 by Stefan Trethan
What programming environment do you use to program the launchpad? I have a couple TI launchpads but the software that came from the download link does not want
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-26 by Donald H Locker
I was charged (so to speak) with finding the problem with automotive instrument clusters that were failing a test in a particular facility. As long as the
RE: [Homebrew_PCBs] Re: PCB holder
2011-12-25 by John Dammeyer
Interesting link. After reading it I think the comment thank Stefan for challenging the traditional view has me wondering whether traditional as used the
Re: PCB holder
2011-12-25 by clausundercover
In over 1 year of playing with microcontrollers and doing all kinds of bad things to them (not minding ESD, inadvertently shorting pins, sloppy soldering,
Re: PCB holder
2011-12-25 by within walking distance
... Some things are pretty much self evident. Using the automobile example, you might say that a car has to have brakes, end of discussion. Just as don t
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-25 by Stefan Trethan
People who say because that s just how it is or end of discussion as a rule are not worth my time talking to. I can t find any good statistics on ESD
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-25 by Benjamin Blumer
It is compelling to have someone with credentials stand on one side of the fence. But I think it would be much more compelling, and more satisfying, to have
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-25 by Pete B
I am a degreed electrical engineer who has done both analog and digitial design for over 30 years. There is nothing to be debated here, you must use ESD
Re: mac osx and laser jet 1102w for toner transfer - problems
2011-12-25 by Andrew
I had that problem, until I found a setting for the graphics output. Unfortunately I don t recall where that setting was, but it was under Linux, so maybe
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-25 by Steve
Hi all, Part of my motivation for seeking advice regarding ESD practices is the failure of a circuit I constructed a year or two ago. It had a handful of
Re: [Homebrew_PCBs] Re: PCB holder
2011-12-24 by Stefan Trethan
... The goal was to show how significant (or insignificant) this problem is in a typical hobby or laboratory situation. There is no doubt that ESD can
OT:RE: [Homebrew_PCBs] Re: PCB holder
2011-12-24 by MIKE DURKIN
Iv been shocked twice by lightning, second one I actually saw/seen it. Kinda like a broccoli head and shaft ... but upsidedown and white. It looked like 3
Re: PCB holder
2011-12-24 by AlienRelics
Amend that to unvarnished wood floors. ; ) Asphalt tiles or ceramic tiles are good insulators. I do agree with what you are saying. To paraphrase another
Re: PCB holder
2011-12-24 by AlienRelics
OK, so you ll only accept solid evidence from people who don t have the equipment nor money to really investigate failures. Got it. So, any hobbyists out there
RE: [Homebrew_PCBs] PCB holder
2011-12-24 by John Dammeyer
My last word on the subject. My examples were obviously fabricated to try and demonstrate that just because you don t see a problem immediately doesn t mean
Re: PCB holder
2011-12-24 by alex4459jopiklal44
, Now, any more examples of even suspected ESD damage anyone? Again, no ... hello Stefan I agree with you way of looking at the risc contra the cost and more.
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Stefan Trethan
Inland, 70% average humidity outdoors. My car shocks me too, I also only close the door by the glass. I think the whole car is charged up relative to the
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Dylan Smith
... Where do you live, though? Somewhere maritime or inland? As others have pointed out where you live has a great influence on how easily you can generate
Re: [Homebrew_PCBs] mac osx and laser jet 1102w for toner transfer - problems
2011-12-24 by Piers Goodhew
... It is cups, but rendering to postscript does not involve turning it into pixels ( rasterising ) - postscript is a vector language and your pcb would be
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Stefan Trethan
There are about a gazillion reasons why the milling machine controller might go haywire, such as a bad solder joint or because someone forgot a decoupling
RE: [Homebrew_PCBs] PCB holder
2011-12-24 by Dave
There used to be a local component retailer (those were the days) who sold to amateurs. He was often asked about the effects of ESD when folks observed the
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Sudipta Ghose
Hi all! I use wood instead. 73s, SG VU3TKG ... -- One of those ... ... [Non-text portions of this message have been removed]
RE: [Homebrew_PCBs] PCB holder
2011-12-24 by Boman33
I am running production lines and supervising two engineering labs and the ESD problems exist. What you and others fail to take into account is the
RE: [Homebrew_PCBs] PCB holder
2011-12-24 by John Dammeyer
Hi, I worked in the semi industry for a while. They are fastidious about keeping static down to a minimum. And rightly so. The reason is more subtle. Your
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Eldon Brown
I agree, for once someone has stated what I observed all along. But, if I had only one part, and it was going to the Moon, I would think twice about ESD. Eldon
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Stefan Trethan
What s wrong with staying realistic about risk? We could do all sorts of things safer - say reduce traffic deaths to almost zero by driving no faster than
Re: [Homebrew_PCBs] mac osx and laser jet 1102w for toner transfer - problems
2011-12-24 by Peter Harrison
The bitmap idea sounds like a good possibility. As far as I know, the mac print engine is CUPS and I would guess that everything gets fed through an
RE: [Homebrew_PCBs] PCB holder
2011-12-24 by Boman33
You might be lucky but do not spread bad info. Bertho From: Stefan Trethan Sent: Saturday, December 24, 2011 02:28 Come on people, stay realistic. Steve is
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Stefan Trethan
Come on people, stay realistic. Steve is most likely not going to make assemblies for an aircraft or anything like that. Nor is he going to run thousands of
Re: [Homebrew_PCBs] mac osx and laser jet 1102w for toner transfer - problems
2011-12-24 by DJ Delorie
Keep in mind, the average laser printer (including yours) is 600 DPI - that s 1.33 mils PER PIXEL. An 0.5mm pitch part has pads on the order of only six
Re: PCB holder
2011-12-24 by Ben L
... Think I would agree The vise above or one like it would make more sense. Myself I use a Panavise PCB holder Ben
Re: [Homebrew_PCBs] mac osx and laser jet 1102w for toner transfer - problems
2011-12-24 by Piers Goodhew
Is it pcl or postscript? What Res can it do? I find my elderly 5mp at 600 dpi cannot do qfp, though i can do fine at 10 mil traces. Ergo qfp is close to, or
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Dwayne Reid
... Yep. Our workbenches are covered with a static-dissipative surface which is extremely durable. We check the surface resistivity yearly and have found no
Re: [Homebrew_PCBs] PCB holder
2011-12-24 by Steve
Thanks everyone for the thoughts regarding the polyethylene/nylon PCB holder and the ramifications regarding damage to ESD sensitive devices. I think I m going
mac osx and laser jet 1102w for toner transfer - problems
2011-12-24 by Peter Harrison
Hi I have an HP 1102W laser printer. There are numerous references that indicate it is good for toner transfer. As far as I can see so far, it isn t going to
RE: [Homebrew_PCBs] Re: PCB holder
2011-12-23 by MIKE DURKIN
I wouldn t use it ... I would pintch a stop sign for a flat aluminum surface first!! Mike KC7NOA To: Homebrew_PCBs@yahoogroups.com From:
Re: PCB holder
2011-12-23 by alex4459jopiklal44
... I would not use it for components .ESD is not a religion its fact that components is destroyed with static electricity.. and acryllic and like is very good
Re: [Homebrew_PCBs] PCB holder
2011-12-23 by Dwayne Reid
... I personally would not build it from the plastic materials that you mention. However, unfinished wood is a reasonable choice so long as you keep your
Re: PCB holder
2011-12-23 by John
It looks interesting to me. I will try the concept with wood & acrylic sheet. I think it can be used to hold multiple boards as an assembly and perhaps a
Re: [Homebrew_PCBs] PCB holder
2011-12-22 by Malcolm Parker-Lisberg
Steve What a load of rubbish that design is. Any friction will build up a charge, bye bye ESD sensitive devices, even with a wrist strap! Malcolm I don t
Re: [Homebrew_PCBs] PCB holder
2011-12-22 by Stefan Trethan
The best thing against ESD damage is, in my personal opinion, not to worry about it. You could make the same holder from ESD dissipative plastic. Be warned
PCB holder
2011-12-22 by Steve
This homebrew PCB holder was referenced on another email reflector. It is constructed mostly
RE: [Homebrew_PCBs] Re: The case for crowd-sourced PCB materials
2011-12-20 by Boman33
Larry, Thanks for the info. Your brain dead Printer: I think the photo sensor has trouble seeing the transparent film. I have seen some transparences with a