Re: [Homebrew_PCBs] thickness of printed lines on traces
2002-05-14 by Adam Seychell
... One major fact with inkjets is that the print is very depended on the print media. Lasterjets on the other hand do not suffer the same. Comparing inkjet to
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Re: [Homebrew_PCBs] thickness of printed lines on traces
2002-05-14 by Russell
... It depends on the inkjet. AFAIK, the best is an epson stylus colour printing onto epson transparency with the genuine ink. I can do sharp, smooth tracks
thickness of printed lines on traces
2002-05-13 by dg140@freenet.carleton.ca
How thick is the thinnest line that can be generated by a lasejet (say the HP1200) and an injket? When doing photographic etching, is the thickness of the line
Robotics for SALE!
2002-05-12 by robasic
Hello all, Due to health issues that I am faced with now, I will be selling off my computers, electronics and robotic equipment that I have collected over the
Eagle to Gcode
2002-05-11 by crankorgan
Hi Gang, Found this site. http://mynock.dhs.org/pcbmilling/index.shtml John
Eagle vs TCi3
2002-05-10 by Alan Marconett KM6VV
Hi Dave, listies, I was having problems with some of the trace junctions when I started from a TCi3 generated Gerber file. Seems the order the pads and traces
Fwd: [SeattleRobotics] Eagle PCB - New CadSoft licence created for Hobbist
2002-05-10 by Steve Greenfield
... Cadsoft is doing a trial run at a hobbyist license for Eagle PCB. $125 will buy you a very good set of tools, that are actively used and supported in the
new subject (wave soldering)
2002-05-09 by High Tech
Hi Everyone Has anyone made a good wave solder machine? Or does anyone have good web links? I have tried dip soldering a whole board but there were too many
[Fwd: Re: [Homebrew_PCBs] Re: hot air soldering comments]
2002-05-09 by David L. Miller
... From: - Wed May 08 19:31:50 2002 X-Mozilla-Status: 0001 X-Mozilla-Status2: 00000000 Message-ID: Date: Wed, 08 May 2002 19:31:50
Re: [Homebrew_PCBs] hot air soldering comments
2002-05-07 by hans@code-workshop.com
Steve, Preheating the board is a requirement, but allowing the flux to dry first is a no no... Once dry there is not flux and it can t do the job it s meant
Re: [Homebrew_PCBs] Re: hot air soldering comments
2002-05-07 by Alexandre Guimarães
Hi, ... I prefer solder flux and soldering by hand but if you really want to use hot air you can use loctite 454 gel cyanoacrylate. It works nicely because the
Re: hot air soldering comments
2002-05-07 by tedinoue
Hi Guys, Thanks for replying. I have referenced Hans links and the others in the past and made the hot-air-pencil -- that works fine. My real questions lie
Re: [Homebrew_PCBs] hot air soldering comments
2002-05-07 by Steve Greenfield
Yup, Hans, your page has been in the bookmarks of the Group home page for weeks! Hint, hint, everyone, check out the Bookmarks at the Group home page once in a
Re: [Homebrew_PCBs] hot air soldering comments
2002-05-06 by hans@code-workshop.com
Ted, I made a Hot Air Pencil and published the idea several years ago at my web site. The single most important item is the heat exchanger. In my design I
Re: [Homebrew_PCBs] Software
2002-05-06 by John Beatty
Hi Have you looked at ARES lite and ISIS lite from: http://www.labcenter.co.uk/ These are totally free if you only need to lay out simple boards (100 pin
hot air soldering comments
2002-05-06 by tedinoue
Hi, Well I ve had the opportunity now to try both the budget hot-air soldering system using the fish tank bubbler and radio-shack desoldering system (as seen
RE: [Homebrew_PCBs] how to make a good bubble etcher ?
2002-05-06 by High Tech
Adam I use this tank http://www.web-tronics.com/lowcosetsysw.html It does 2 double side boards in about 4min. It has about 4 small holes at the bottom only and
Software
2002-05-06 by Steve Gunsel
Hi, Has anyone used the software Circuit Design and Circuit Layout available from Kepro? I do not need a real sophisticated setup - I am currently interested
Rocking Etcher
2002-05-06 by crankorgan
Hi Gang, Years ago I built a rocking etcher. It had a AC motor with a gear train. The table with pan rocked back and forth once per second. I thought that was
Re: [Homebrew_PCBs] how to make a good bubble etcher ?
2002-05-06 by JanRwl@AOL.COM
In a message dated 06-May-02 00:28:32 Central Daylight Time, ... Your holes are much too large. Try 0.040 holes (about 1 mm). But you might need a LITTLE
RE: [Homebrew_PCBs] how to make a good bubble etcher ?
2002-05-06 by Tim Goldstein
No personal experience, but here is a link to building a bubble tank http://www.thinktink.com/stack/volumes/voliii/equipmnt/bubltank/bubltank .htm Tim [Denver,
how to make a good bubble etcher ?
2002-05-06 by Adam Seychell
Hi all, I m trying to make a bubble etching tank that can etch uniformly. I ve spend lots of my time experimenting with different designs and can t get uniform
Re: [Homebrew_PCBs] how to make a good bubble etcher ?
2002-05-06 by Russell
The bubbles are probably trying to force the surrounding liquid to rise, causing turbulence and currents. Glue in a vertical wall with the two vertical sides
Thanks!
2002-05-06 by snowowl@nbnet.nb.ca
I just wanted to post a Thank You note to the group. I was looking for info on plotting PCBs and the info I found here was most helpful. Thanks! - Tim - Visit
Welcome new members!
2002-05-05 by alienrelics
About a dozen new members have joined in the past couple of days. Welcome! If you have a question, suggestion, comment, etc. please feel free to post. As
Re: [Homebrew_PCBs] Connect the Dots
2002-05-05 by Steve Greenfield
There s a group for everything. If not, I ll start one. Fortunately one already exists, but I weasled myself in as co-moderator.
Re: [Homebrew_PCBs] Connect the Dots
2002-05-05 by Steve Greenfield
... And I had to figure most of it out myself. The info on the web is sparse as far as how exactly it is done, and I wasn t about to order books without being
Re: [Homebrew_PCBs]wet method questions???
2002-05-05 by Adam Seychell
Generally positive resists use 10g/L sodium hydroxide at a set temperature. Negative dry film resists are developed in 8 - 10 g/L sodium carbonate at 28 -
Re: [Homebrew_PCBs] Connect the Dots
2002-05-04 by Alan Marconett KM6VV
Hi Steve, White vinyl, black vinyl, looks like I d better find some sign shop supplies! Alan KM6VV
Re: [Homebrew_PCBs] Connect the Dots
2002-05-04 by Alan Marconett KM6VV
Hi Steve, Thanks for the detailed description! I wasn t aware of what is being done in the sign business! I ve recently heard of these swivels being about
Re: [Homebrew_PCBs] Connect the Dots
2002-05-04 by Steve Greenfield
I ll bet you could cut rubylith in it, too. The cut vinyl is applied to a van or sign surface, and then that is normally the final product. I apply the vinyl
Re: [Homebrew_PCBs] Connect the Dots
2002-05-04 by Alan Marconett KM6VV
Thanks Tim, I m not familiar with it, unless it s similar to the stuff the microwave guys were playing with (sounds like it might be). After they put the
RE: [Homebrew_PCBs] Connect the Dots
2002-05-04 by Steve Greenfield
Tim, smack on the nose. Alan, when you see a sign on the side of a vehicle, if it isn t painted then there is a 99.99% chance that it is sign vinyl. It comes
Re: [Homebrew_PCBs] traces HOW wide??
2002-05-04 by JanRwl@AOL.COM
In a message dated 03-May-02 18:14:33 Central Daylight Time, ... The trace-width depends on TWO things: How much CURRENT ( amps ) the trace must conduct, and
RE: [Homebrew_PCBs] Connect the Dots
2002-05-04 by Tim Goldstein
I would guess that he is referring to sign vinyl. It is the plastic film material that is cut then attached to a backing to make signs and banners. The stuff I
Re: [Homebrew_PCBs] Connect the Dots
2002-05-04 by Alan Marconett KM6VV
Hi Steve, You cut vinyl? What is vinyl then? I recall rubylith from a long time ago that the microwave guys used for special boards, but the only vinyl I
Re: [Homebrew_PCBs]wet method questions???
2002-05-04 by twb8899
When I ran a commercial shop we used a 1% solution of soda ash for developing dry film. We ran out of soda ash once and used Tide laundry soap. It worked good
Re: [Homebrew_PCBs] Connect the Dots
2002-05-04 by hans@code-workshop.com
I used Letraset, last time I remember it was about 1980.... hansw ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] traces HOW wide??
2002-05-04 by Lukas Louw
Depends what process your e going to use for resist. Using laserprinted paper sheets ironed onto copperclad I get away with 0.02 spacing and trace
Re: [Homebrew_PCBs] Connect the Dots
2002-05-04 by Lukas Louw
LOL been there done that - I also remember when I was a kid, buying self adhesive shelving paper, the kind you use to line kitchen drawers also, and slicing it
Re: [Homebrew_PCBs] Re: traces HOW wide??
2002-05-04 by hans@code-workshop.com
Here is a successful layout, this images highlights the power in blue. Download the entire set of artwork and you can get a better idea from it...
Re: traces HOW wide??
2002-05-03 by crankorgan
John, Don t forget the 8 diodes on the output of the L298. Forget this if you are using a chip with internal diodes. John ... does ... will ... me
Re: traces HOW wide??
2002-05-03 by crankorgan
John, Keep the traces that come out of the L298 to the motor as fat and short as you can. Also the pins that go to the sense resistors to ground. Also the pin
New file uploaded to Homebrew_PCBs
2002-05-03 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 : /Marble_h
traces HOW wide??
2002-05-03 by marble_h
is there a set thickness when doing a trace is .050 to small or does it matter.On the board I just did ,I made most at .125 and the smallest is .050 is that ok
Pics of a milled board
2002-05-03 by ph4appl
Hello all. I added a few new pics to my website. Included is a shot of one of the driver boards that was milled and drilled on the machine. There is also a new
Re: [Homebrew_PCBs] Connect the Dots
2002-05-03 by Steve Greenfield
... I posted pictures of one of the PCBs I made using my vinyl cutter. You can get the swivel knife holders used to cut vinyl that are in pen bodies to fit
Re: [Homebrew_PCBs]wet method questions???
2002-05-03 by hans@code-workshop.com
Dwayne, I agree with your comments about acid... ferric chloride can make a mess, and if anyone has a stainless steel sink, better be careful it will eat holes
Re: [Homebrew_PCBs]wet method questions???
2002-05-03 by Dwayne Reid
... First, I strenuously object to the term ACID when talking about etchant. Etchant MAY contain acid (I use Ammonium Persulphate catalyzed with Sulphuric
Re: [Homebrew_PCBs] Connect the Dots
2002-05-03 by Alan Marconett KM6VV
Hi Listies, My first exposure to making circuit boards was in an early class in college (late 60 s). The instructor had us put masking tape on the board