Re: [Homebrew_PCBs] DLP Double Sided Update
2014-09-05 by Roger Blair
Mark, I mailed the MCU out earlier today... Many thanks, Roger On 9/4/2014 12:47 PM, Mark Lerman mlerman@ix.netcom.com [Homebrew_PCBs] ... -- Dell XPS8700
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Re: [Homebrew_PCBs] DLP Kit
2014-09-04 by jeffjorgo@...
Hi Austin, I m still in the process of trying to track down a printer. No luck so far. At this stage I haven t considered the materials but usually not a
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-09-04 by Mark Lerman
Roger, You can probably make do with the 12 . The advantage of the extra 2 inches is that the trailing end of the Carrier will still be in the rollers when the
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-09-04 by Roger Blair
Mark, Sorry for my slow response, too many things to do... I expect to get the board in the mail within a day or two. I have trimmed the board to .95 x 1.55 ;
[Homebrew_PCBs] DLP with MCU
2014-09-04 by Mark Lerman
The MCU version is now on Instructables: Mark
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-09-04 by Mark Lerman
Roger, Did you get my email re reprogramming the board? Mark At 04:40 PM 8/25/2014, you wrote: Mark, Thanks for that, very timely... I am holding all the
Re: [Homebrew_PCBs] Direct Laser Printing Video
2014-09-04 by Mark Lerman
d, dn are fine, don t know what an a version is. Mark At 05:42 PM 9/3/2014, you wrote: Went to ebay to buy the Lexmark but noticed there were several
Re: [Homebrew_PCBs] Lexmark E260 Question
2014-09-04 by Mark Lerman
The d is for duplex (prints on both sides of paper), n for network enabled, not sure what t is for. Both the d and dn work fine, as should the n (not
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-04 by DJ Delorie
Harvey White madyn@dragonworks.info [Homebrew_PCBs] ... Right. I have regular lighting for most things, and unscrew the bulb lighting for UV-sensitive
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-04 by Harvey White
... OK, slight misunderstanding here.... don t use them for the photoresist . Darkrooms, for instance, have a safelight lighting system and a regular lighting
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-03 by DJ Delorie
Harvey White madyn@dragonworks.info [Homebrew_PCBs] ... Thanks, but I ll keep using them. Most of the basement has another purpose that s best served by
Re: [Homebrew_PCBs] Direct Laser Printing Video
2014-09-03 by randee01@...
Went to ebay to buy the Lexmark but noticed there were several versions of the E260 such as an a, an d, dn etc. What is yours? Randy
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-03 by Harvey White
... Don t use them then, you want incandescent not fluorescent, or if you want fluorescent, then use yellow or red. A decent bug lamp (of the yellow type)
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-03 by DJ Delorie
... Yeah, all my basement lights are CF daylight bulbs. Dunno if they re full spectrum, but they re not the usual yellow-y lights.
Lexmark E260 Question
2014-09-03 by randee01@...
I was impressed by the file from mark_from_pomona regarding direct laser printing using a Lexmark E260 from Ebay. Several models of the E260 are available such
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-02 by Jean-Paul Louis
I used to have a yellow light (inactinic) in the basement for any photographic work. That was good for PCB work too. Jean-Paul AC9GH
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-02 by Randall Morgan
Most in-door lighting does not produce enough UV to cause an issue. However, if you have one of those full-spectrum or daylight lamps beware. I actually have
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-02 by DJ Delorie
I usually just unscrew the one bulb over the bench and the remaining light in the basement doesn t seem to affect it significantly.
Re: [Homebrew_PCBs] DLP Kit
2014-09-02 by austin.j.wilson@...
Hi Jorgo, I managed to score a secondhand one yesterday on ebay for $50. I have to drive to North Ryde (Sydney) to pick it up. I was wondering where you are
File - monthly.txt
2014-09-01 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change
Re: [Homebrew_PCBs] darkness requirements for UV PCB handling?
2014-09-01 by Leon Heller
... I ve never had any problems in ordinary room lighting. Leon -- Leon Heller G1HSM
darkness requirements for UV PCB handling?
2014-09-01 by mattmoose1969@...
Just wondering how dark the handling space should be, when preparing a fresh UV PCB after removing the protective film. I try to ensure that no light
RE: [Homebrew_PCBs] help request: disappointing etch resist development
2014-09-01 by mattmoose1969@...
Hi Bertho, Thanks for your suggestion, that makes total sense. I ll give it a go next. Regards Matt ... At the edge of your board outside the final area place
[Homebrew_PCBs] DLP latest version
2014-08-31 by Mark Lerman
To those who have been following this thread, I have just uploaded the revised pdf, ver 1.10, to the files section of the group and the revised photos to
New file uploaded to Homebrew_PCBs
2014-08-31 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File : /Direct
hand soldering
2014-08-30 by blue_eagle74@...
If anyone needs help in hand soldering let me know. I live in IL and work for a board house for 9 years now. I am the IPC 2014 hand soldering World champion.
RE: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by Boman33
At the edge of your board outside the final area place a small piece of aluminum foil. That way you have a spot without any exposure at all. Similarly cut a
Re: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by mattmoose1969@...
I ll order some LsaerStar film and see if anything improves! Thanks, Matt ... It might not have enough contrast, try using LaserStar film. I think it s
Re: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by mattmoose1969@...
Hi Leon, I m using the developer at around 21 C, and I believe that its working temperature needs to be 20-25 C. Thanks, Matt ... I should have added - how hot
Re: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by mattmoose1969@...
Hi, sorry you downloaded an .exe somehow, the Sendspace link usually just works. Thanks for copying the image files elsewhere, very kind. The paper is 90gsm as
Re: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by James
I put your images on imgur, that sendspace tried to download some exe to me the first time, dodgy as.. http://imgur.com/0kyPB0W http://imgur.com/2L4v3Gg what
Re: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by Leon Heller
... It might not have enough contrast, try using LaserStar film. I think it s available from RS, or you can get it from Mega Electronics (UK). Leon -- Leon
Re: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by Leon Heller
... I should have added - how hot is the solution? Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by mattmoose1969@...
Hi Leon, I m laser printing the artwork onto 90gsm tracing paper, as recommended by someone who has done a lot more of this than I have. Thanks, Matt ... How
Re: [Homebrew_PCBs] help request: disappointing etch resist development
2014-08-29 by Leon Heller
... How are you making the transparency? Does it have enough contrast? Leon -- Leon Heller G1HSM
help request: disappointing etch resist development
2014-08-29 by mattmoose1969@...
Hi all, I am experiencing a problem when developing a UV-sensitive PCB type AA16, made by CIF, available from RS Components as stock number 159-6057. I
Re: [Homebrew_PCBs] Re: DLP Double Sided Update
2014-08-27 by Harvey White
... I do. Registration of the boards is critical. Really critical. When you do it properly, the boards work very well. PS: in EAGLE (for instance), you print
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-08-27 by Mark Lerman
Still writing the documentation but should have it up by the weekend. Mark At 10:57 AM 8/27/2014, you wrote: Have you posted your new mods for double sided
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-08-27 by twgray2007@...
Have you posted your new mods for double sided boards?
Re: DLP Double Sided Update
2014-08-27 by JAMES HARVEY
Couldn t you print two single sided boards on thin material then epoxy them together? -- The only difference between men and boys, is the price of their
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-08-26 by Mark Lerman
Lee, I agree that using two boards is pretty easy, but I m enjoying the challenge! The way I am now doing it (experimental): 1 - Print a centerline on the
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-08-26 by Harvey White
... Put a layer of masking tape over the boards when you epoxy them together, and that keeps epoxy fingerprints from getting all over the board. I use a
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-08-26 by indigo_red@...
Hi Mark, First of all I want to say thanks to You and Stefan for pioneering work for DIY prototypes. I love your processes, development, and sharing of
Re: [Homebrew_PCBs] DLP Double Sided Update
2014-08-25 by Roger Blair
Mark, Thanks for that, very timely... I am holding all the components for the MCU mod, but will wait for your revised mod and update my inventory; I hope to
[Homebrew_PCBs] DLP Double Sided Update
2014-08-25 by Mark Lerman
To those who have been following the DLP thread(s): I have spent the last few weeks experimenting with producing double sided pcbs with my E260 laser printer.
PCB supplies shop
2014-08-25 by cheater00 .
Hi guys, just stumbled upon this, it seems many here could use it: https://twitter.com/whitequark/status/503757202675359745 It links to wfl3030.taobao.com for
Re: [Homebrew_PCBs] Solder Paste - which to choose...?
2014-08-23 by Jean-Paul Louis
The solder paste or the wire have usually the same metal composition. The difference is the flux used. For leaded solder, the eutectic is really 63/37 as
Re: [Homebrew_PCBs] Solder Paste - which to choose...?
2014-08-23 by Stefan Trethan
So a wider process window of leaded paste (if you prefer, although it is a two-dimensional thing, and I thought about the vertical, conventionally temperature,
Re: [Homebrew_PCBs] Solder Paste - which to choose...?
2014-08-22 by Jean-Paul Louis
Higher Process Windowö is absolutely meaningless. The proper term should have been ôwider process windowö as the process windowö term is used in statical
Re: Solder Paste - which to choose...?
2014-08-22 by palciatore@...
And that definition really clarifies things. I rest my case. Thanks! ... I have to disagree. I think it is important to learn the terms. If you don t know what