Re: Plotter
2002-06-23 by caveteursus
I have most of the HP Graphics Language on my website www.tech-diy.com If you are using a program like Ultiboard, note that the command AA Arc Absolute which
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Re: Suitability of pump for spray etching
2002-06-21 by grantfair2001
Thanks Tom. I will pick one up when I am vacationing in the US next week. I appreciate your help. Grant ... Johnstone
Re: Suitability of pump for spray etching
2002-06-21 by twb8899
Grant, The part number for this pump is CP-6500. Another source is Johnstone Supply. Their catalog number is B80-943. Catalog price is $16.59 (US).
Re: Suitability of pump for spray etching
2002-06-21 by grantfair2001
Thanks Tom. I looked at the Grainger site but it showed about 100 Little Giant pumps ranging in price from $25 to several hundred. ANy idea how to narrow this
Re: Suitability of pump for spray etching
2002-06-20 by twb8899
Grant, You could try using one of the Little Giant pumps. I haven t bought one of these pumps in years but they used to cost about $25 from WW Grainger. Kepro
Re: Advice for Newbie - photoresists
2002-06-20 by twb8899
... Hans, We use solvent just to clean the screens. All other processing is water based chemistry. Thanks for pointing that out. You wouldn t want to use
Re: [Homebrew_PCBs] Suitability of pump for spray etching
2002-06-20 by Adam Seychell
The pump sounds like its designed for chemicals. HCl + CuCl will be just fine, but I d be more worried if you have enough pressure to properly power spray
Some millers
2002-06-20 by Russell
http://www.pcbmilling.com/machines.htm
Suitability of pump for spray etching
2002-06-20 by grantfair2001
I am contemplating using CuCl and HCl as etchant and wonder if this pump (described below) would withstand this etchant. The concentration of Hcl would be 5%
Re: [Homebrew_PCBs] transformers
2002-06-20 by JanRwl@AOL.COM
Randy K: I wrote an article answering every question you have. Try this link: Roll Your Own
Re: [Homebrew_PCBs] transformers
2002-06-20 by JanRwl@AOL.COM
Re: [Homebrew_PCBs] Re: Advice for Newbie - photoresists
2002-06-19 by Hans Wedemeyer
Just a note... ... They state clean-up is done with caustic-soda (Lye) solution... hans w [Non-text portions of this message have been removed]
Re: Advice for Newbie - photoresists
2002-06-19 by twb8899
Adam, The liquid photo resist I use is made by Peters in Germany. The name of the company is Lackwerke Peters GmbH + Co KG. Their web site is www.peters.de
Re: [Homebrew_PCBs] transformers
2002-06-19 by Adam Seychell
And of course don t forget Unitrode s Seminar series at TI s web site
Re: [Homebrew_PCBs] Re: Advice for Newbie - photoresists
2002-06-18 by Adam Seychell
The turkey bag method you describe below sounds like a very good idea. Having used the dry film I can imagine how this will work. Once the film is laid down
Re: Advice for Newbie
2002-06-18 by twb8899
Adam, You are correct about using the iron and wrinkles. I didn t go into much detail on the process. I lay down the dry film like you suggested and then put
transformers
2002-06-18 by Randy Knutson
Hi: I know this is off the pcb topic but I was wondering if anyone on this list knew how to design transformers or where to look to find this information out.
Re: [Homebrew_PCBs] transformers
2002-06-18 by Lukas Louw
Hi Randy, Here are a few links for you. It s not that trivial, but there are a few rules of thumb that you can use. I have been involved with design switching
Re: [Homebrew_PCBs] Re: Advice for Newbie
2002-06-18 by Adam Seychell
Tom, thanks for your input. I have been playing around with the dry film lately. It is definitely the a lot better than spraying liquid resists and cheaper
Re: laser diode photoplotter
2002-06-18 by jmelson2
... light ... point ... laser ... Actually, this is not a big deal. A sphere lens collects the light well, a piece of aluminum foil with a small hole masks
Re: [Homebrew_PCBs] Re: Advice for Newbie
2002-06-17 by BrianJHoskins
Hi, Firstly, thanks everyone for all your advice. I m still a little in the dark, but I ll look into it and if I m still puzzled I ll come back to you all.
Re: Advice for Newbie
2002-06-17 by twb8899
Brian and the group, I spent over twenty years in the circuit board business and probably tried every method that came along. The most difficult part for the
Re: Has any tried to tilt the boards?
2002-06-17 by alenz2002
Alexandre, You know you are absolutely right. I noticed my son s new dremel came with what looked like a regular keyless drill chuck and he liked it. So I got
Re: [Homebrew_PCBs] Plotter
2002-06-17 by James Owens
Hi, This is very true but I found all that I needed to know about plotters in the bookmarks, as stated below. Regards, Terry
Re: [Homebrew_PCBs] Plotter
2002-06-17 by Steve Greenfield
Really? There is pretty much zero information on that website on using pen plotters for direct application of resist to PCBs. His info on plotters is about
Re: [Homebrew_PCBs] Advice for Newbie
2002-06-16 by JanRwl@AOL.COM
Brian: Here s ONE ignernt Yank s experience for you to confuse among other good info: The first-ever home-brew PCB s I ever did were done by painting the
Re: [Homebrew_PCBs] Plotter
2002-06-16 by James Owens
Hi, I have checked the bookmarks and links along with http://www.netcomuk.co.uk/~wwl/pcbs.html I found them so useful I have no further questions to ask on
Re: [Homebrew_PCBs] Plotter
2002-06-16 by Steve Greenfield
Don t forget to check the archives and the bookmarks pages. I ve gone to a lot of trouble to set up links, please use them. There are links there specifically
Re: [Homebrew_PCBs] Advice for Newbie
2002-06-16 by Hans Wedemeyer
Brian, When you say a system does that mean full blown... i.e. multilayer, through hole plated via s and silk screen printing ? If you just want to make two
Advice for Newbie
2002-06-16 by brianjhoskins
Hi everyone, I m new to this group. I have quite an extensive Electronics backround behind me, and I do alot of my own self-designed projects at home. I m
Re: [Homebrew_PCBs] Plotter
2002-06-15 by Brian Pitt
yes they work fairly well for pcb track plots the only real problem is the pen down speed ,the solenoid can slam the pens into the board pretty hard and blunt
Plotter
2002-06-15 by James Owens
Hi, I have a 7475A plotter and was wondering if anyone has tried doing artwork directly onto a copper-clad board with one of these. Regards, Terry
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-06-15 by Alexandre Domingos F. Souza
... Have you tried the coletless chuck? That one that looks like one from a normal drill? That one seems to be better in the centering of the tool. ...
Re: [Homebrew_PCBs] Re: Enco Pencil Die Grinder Update
2002-06-15 by milwiron@terrorbydesign.com
Hey Jan, I noticed the warm running also, especially with the oil that was in it and then using 20 wt. spindle oil. It never got hot so I don t think there s
Re: Enco Pencil Die Grinder Update
2002-06-15 by janrwl
... price, no ... nearly ... is noticeably ... Dotco, Sioux, ... couple ... shop, ... value for ... Foredom ... my shop ... making a ... future ... coupled
Thanks! : Was CNC Help
2002-06-12 by Brian Gracia
You guys are Great!!! I ordered my parts from Futurelec. Great Prices as compared to the surplus houses. Was going to have to divide my order between 3
RE: [Homebrew_PCBs] Need help with CNC
2002-06-12 by Dave Hylands
Here s a driver chip to consider: http://www.infineon.com/cmc_upload/documents/008/707/tle5206-2_1.pdf Dave Hylands
Re: [Homebrew_PCBs] Need help with CNC
2002-06-12 by Tony Jeffree
That is certainly true (only good for 3A/phase if I recall correctly). Regards, Tony ... Regards, Tony
Re: [Homebrew_PCBs] Need help with CNC
2002-06-12 by Hans Wedemeyer
Well I have not decided yet... However it will not be 2 X L298 ! hansw ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Need help with CNC
2002-06-12 by Tony Jeffree
Hans - You re right - $18 is still a good price. What do you plan to use for the 5 amp output stage? Regards, Tony ... Regards, Tony
Re: [Homebrew_PCBs] Need help with CNC
2002-06-12 by Hans Wedemeyer
Tony, I agree, the L298N has an absolute Max V or 50... That doe snot mean it will work at 50V all day everyday !
RE: [Homebrew_PCBs] Need help with CNC
2002-06-12 by Tony Jeffree
... I believe the spec of this board to be a little misleading - the L298 (which this board uses as its output stage) is rated at 2A/phase continuous. You
RE: [Homebrew_PCBs] Need help with CNC
2002-06-12 by Dave Hylands
I went to the Allegro site and liked the following chips: 1 - SLA7044M http://www.allegromicro.com/sf/97042/ 2 - PG001M http://www.allegromicro.com/sf/9001/
Re: [Homebrew_PCBs] Enco Pencil Die Grinder Update
2002-06-12 by milwiron@terrorbydesign.com
... Hi Jan, Like most industrial tools I suspect similar die grinders by Dotco, Sioux, Nu-Line or Foredom are substantially better, though they do cost a
Re: [Homebrew_PCBs] Need help with CNC
2002-06-12 by Hans Wedemeyer
Brian, Very often you can use the six wire more as a 4 wire motor, simple ignore the center tap I published a free stepper motor controller design complete
Re: Need help with CNC
2002-06-12 by crankorgan
Brian, The Tip120s have a built in damper diode. You can find some info at: http://www.luberth.com/plotter/plotter.htm Check out GRANT s circuit in the left
Need help with CNC
2002-06-12 by Brian Gracia
Hello Everyone, I need some help starting out with CNC. I am going to build a CNC router type machine to route pcbs. I need some help with the circuits. I
Re: [Homebrew_PCBs] eagle cam
2002-06-12 by Hans Wedemeyer
Randy, Sorry I screwed up... I ve been using so many PCB programs... So for my own sanity I searched and found the one that does allow Invert and it is PIA
Re: [Homebrew_PCBs] eagle cam
2002-06-12 by Randy Knutson
Dear Hans: Yes! I am now trying to invert in eagle. The only way I have figured out how to do it within eagle is to export it as a bitmap and ivert in paint
Re: [Homebrew_PCBs] Enco Pencil Die Grinder Update
2002-06-11 by JanRwl@AOL.COM
Denny: I ordered one to play with , too; thinking, for THAT price, no biggie either way. Was curious about the Sioux model that costs nearly twice as much