Re: [Homebrew_PCBs] Newbies vs Oldies
2005-07-07 by Earl T. Hackett, Jr.
I guess I m an Oldie. I spent 12 years trying to teach companies such as IBM, HP, Sperry Univac, Burroughs, and countless board shops how to build PCBs. There
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Newbies vs Oldies
2005-07-07 by Steve
... I don t like bullies on lists, and it appears to me -you- are bullying. Stefan -cannot- monopolize anything here. He can post 100 replies to one message,
RE : [Homebrew_PCBs] Newbies vs Oldies
2005-07-07 by Robert Hedan
Ah, don t worry Steve, it s nothing. Mycroft and Stefan just can t see eye-to-eye on whether a barbecue chicken brochette should turn up and away from the
Newbies vs Oldies
2005-07-07 by Steve
... wrote: ... Actually, Mycroft, what I ve noticed is that you are overly sensitive to anything Stefan posts. I take all complaints seriously and go back and
Appropriate subject lines Re: Request to list members
2005-07-07 by Steve
Well said! Steve Greenfield, listowner Homebrew_PCBs ... on a ... on ... line ... so ... unrelated ... will
Re: PCB EDM -- further thoughts
2005-07-07 by Phil
I ve been watching this with interest. For me the biggest questions are a) cutting electrode design (shape, material, ...) b) spark control c) power supply
Re: [Homebrew_PCBs] PCB EDM -- further thoughts
2005-07-07 by Bill Maxwell
Yes Curt, definite interest even though I would need to Australianise the design for local materials. Bill ... From: curt_rxr To:
USB files
2005-07-07 by Robert Hedan
A little while ago we discussed USB used with PIC microchips (to drive a PCB drilling station). I had uploaded files generated by EasyHID, a free tool from
Re: [Homebrew_PCBs] Re: CNC calibration - an alternative approach
2005-07-06 by David McNab
... board is 1.6mm thick. ... Nice ... Again, nice. ... Hi Brian, Your ideas are valuable, and something I ll definitely think about as my CNC evolves. I did
Re: PCB EDM -- further thoughts
2005-07-06 by milkgonefunky
... This is the sort of stuff I was hoping to get into when joining this YGroup! I am very very interested. I have an NSK product guide as I was looking at
Re: [Homebrew_PCBs] PCB EDM -- further thoughts
2005-07-06 by Alexandre Guimaraes
Hi, Curt ... Please send specially detailed pictures of your cutting head . The XY stage is much easier to figure out. The novelty of your technique is the
PCB EDM -- further thoughts
2005-07-06 by curt_rxr
Hi All, Stefan and Bengt were interested in my attempts to configure an EDM PCB milling machine. Since my machine was built using surplus from my lab s
Re: [Homebrew_PCBs] Users manual
2005-07-06 by als@labyrinth.net.au
... Try http://www.manualsplus.com/
Re: CNC calibration - an alternative approach
2005-07-06 by Brian Chapman
David, Can I make a stab at this? First, though, what is the thickness of the PCB you mention? Often, I do the following to locate, and re-locate when
CNC calibration - an alternative approach
2005-07-06 by David McNab
Hi all, I was tackling the challenge of mounting the pcb on the CNC carriage for drilling and getting it perfectly aligned, trying to get holes that line up
RE : [Homebrew_PCBs] LT1085 Voltage regulator
2005-07-06 by Robert Hedan
D oh! Yes, I meant to send this to the Electronics 101 group. I was daydreaming and sent it to the wrong group, situation corrected. Sorry, wrong subject
[Homebrew_PCBs] LT1085 Voltage regulator
2005-07-06 by Robert Hedan
Hi, I m searching for a positive voltage regulator that can handle 48V input and 40V 3A output for a stepper motor application. I m using the L287/L298 IC
Re: [Homebrew_PCBs] Users manual
2005-07-05 by Earl T. Hackett, Jr.
Check the model number. I couldn t find a 1630 on the Agilent site. They do have on-line manuals for many logic analyzers. ... From: Bengt Sjölund To:
Re: Looking for photos of milled PCBs & Tools
2005-07-04 by lcdpublishing
Hi Ed, Thanks, but is there any chance I could persuade you to do a close up photo showing a lot of detail. Thanks! Much appreciated. Chris ... web ... years
Re: electroetching => uniformity ?
2005-07-04 by James Newton
... setup ? This idea has been sticking in my mind as well.. The lack of lateral forces (I assume) makes it attractive for low cost CNC. As to the uniformity,
Re: [Homebrew_PCBs] Re: Looking for photos of milled PCBs & Tools
2005-07-04 by Roy J. Tellason
... Nah. I m *real* new at a lot of this stuff... ... Ok. I m still thinking DIY here, but we ll see where things end up, eventually. I m in no hurry, and
Users manual
2005-07-04 by Bengt Sjölund
Hi, I need to find a users manual for HP 1630G Logic analyzer, can anybody help me with a link to download this manual? Much appreciated for any help. Cheers
Re: [Homebrew_PCBs] Re: Looking for photos of milled PCBs & Tools
2005-07-04 by edrupp
I have a couple of photos of my milled PC boards at my robot clubs web site. I should post more some day. I ve been milling PCBs for years and have gotten
Re: Looking for photos of milled PCBs & Tools
2005-07-04 by Brian Chapman
... involved in the machine to work at that kind of scale? I don t think I ve ever seen a mill that small and my drill bits only go to #80. ... Roy, sure,
Re: [Homebrew_PCBs] Re: Hmm, another thought....
2005-07-04 by Roy J. Tellason
... No, I just hadn t gotten to it yet... :-)
RE : [Homebrew_PCBs] Re: Hmm, another thought....
2005-07-04 by Robert Hedan
Hi Roy, You missed a subsequent post where I said I made a mistrake , I meant the negative. Then I yapped on about the reasons why. Robert ... De :
Re: [Homebrew_PCBs] Re: Looking for photos of milled PCBs & Tools
2005-07-04 by Roy J. Tellason
... Can you give me a rough idea of what sort of considerations are involved in the machine to work at that kind of scale? I don t think I ve ever seen a mill
Re: [Homebrew_PCBs] Re: Hmm, another thought....
2005-07-04 by Roy J. Tellason
... They were wrong. You want to disconnect the _ground_ wire first, and connect it last. I speak from having managed a retail battery store for several
Re: Looking for photos of milled PCBs & Tools
2005-07-04 by Brian Chapman
Chris, I need to explain that I m here on this board for reasons other than PCBs and electronics; I work in the scale model manufacturing field, creating
Re: [Homebrew_PCBs] electroetching => uniformity ?
2005-07-04 by Adam Seychell
... I ve never tried electroetching, but I m curious what the etch uniformity is like for a simple (homebrew style) electroetching setup ? With a conventional
Re: [Homebrew_PCBs] Re:etched my first board today -- photos-- considering options....
2005-07-03 by Stefan Trethan
On Sun, 03 Jul 2005 21:18:23 +0200, lcdpublishing ... No i think it says pretty well what the problems are with milling. It is a crude way to do things and
Looking for photos of milled PCBs & Tools
2005-07-03 by lcdpublishing
Can someone please post a couple of photos of a milled PCB and the tools used in milling. I am a tad bit confused by the process but I am guessing you simply
Re:etched my first board today -- photos-- considering options....
2005-07-03 by lcdpublishing
Hmm, read through it, I think it was written by the marketing department ;-) Chris ... and ... knowledge, ... the ... you ... points. ... makes both,
RE : [Homebrew_PCBs] Re: Hmm, another thought....
2005-07-03 by lcdpublishing
While on the subject - Keep in mind when doing jump starting this Winter, come cars are being switched over to 24 volt system (not positive it is 24Volts, but
RE : [Homebrew_PCBs] Re: Hmm, another thought....
2005-07-03 by Robert Hedan
Yeah, removing negative is much better, I posted the wrong terminal. It also doesn t generate sparks when you re fiddling with it. Don t rely on which cable
Re:etched my first board today -- photos-- considering options....
2005-07-03 by Phil
... You probably didn t leave the board in the etchant long enough. from looking at the pictures, even with trace spread, there seemed to be some gap. I
Re: [Homebrew_PCBs] Re:etched my first board today -- photos-- considering options....
2005-07-03 by Stefan Trethan
On Sun, 03 Jul 2005 20:28:28 +0200, lcdpublishing ... I would consider that doecument controversial, but i agree
Re: EDM enclosure -- suggestions?
2005-07-03 by Brian Chapman
Chris, ST, all great ideas. Again, I thank you. ST, just a side note: This list, imho, would not be so vital, so energetic, if you did not participate here. I
Re:etched my first board today -- photos-- considering options....
2005-07-03 by lcdpublishing
... solve ... as to ... Stefan, don t know what the Bungard file is, can you direct me? Yeah, I can see a whole host of problems with both CNC drilling and
Re: [Homebrew_PCBs] Re:etched my first board today -- photos-- considering options....
2005-07-03 by Stefan Trethan
On Sun, 03 Jul 2005 19:45:50 +0200, lcdpublishing ... Yea, can t etch without ;-). A permanent setup makes it easier tho, and if you make a clever board holder
Re: [Homebrew_PCBs] Re: Hmm, another thought....
2005-07-03 by Stefan Trethan
On Sun, 03 Jul 2005 19:39:37 +0200, Robert Hedan ... You know it is better to disconnect negative? If you start with positive you can easily short it to ground
Re:etched my first board today -- photos-- considering options....
2005-07-03 by lcdpublishing
With my first board now drilled, and Detailed , I am quickly gaining the appreciation for alternative methods. I used a riffler file to clean between the
Re: [Homebrew_PCBs] Re: EDM enclosure -- suggestions?
2005-07-03 by Stefan Trethan
On Sun, 03 Jul 2005 19:11:02 +0200, Brian Chapman ... Yea for a large one i suppose. For the smaller ones i built a vice was OK (no more than 15 cm any side.)
[Homebrew_PCBs] Re: Hmm, another thought....
2005-07-03 by Robert Hedan
I took a vocational program through highschool. One thing I will always remember in auto mechanics is ALWAYS disconnect the positive terminal at the battery
RE : RE : RE : [Homebrew_PCBs] Re: Hmm, another thought....
2005-07-03 by Robert Hedan
Just a thought, why bother with building a power supply then? Would a few car batteries and a car battery charger do the trick? You can get several working
Re: EDM enclosure -- suggestions?
2005-07-03 by lcdpublishing
Hi Brian, if at the hardware store, look for Pop rivets which are a blind rivet system - Pretty cheap, easy to work with too.
Re: EDM enclosure -- suggestions?
2005-07-03 by Brian Chapman
... and sides, the other piece forms bottom and front/back.
Re: RE : RE : [Homebrew_PCBs] Re: Hmm, another thought....
2005-07-03 by Stefan Trethan
On Sun, 03 Jul 2005 18:43:10 +0200, Les Newell ... Probably the aluminum burned so fast there wasn t much time for current. That thing
Re: [Homebrew_PCBs] EDM enclosure -- suggestions?
2005-07-03 by Stefan Trethan
On Sun, 03 Jul 2005 18:45:29 +0200, Brian Chapman ... I ve never build large enclosures, as i usually re-use old stuff, but for small enclosures the following
EDM enclosure -- suggestions?
2005-07-03 by Brian Chapman
I m tackling the building of the EDM device I mentioned in an earlier post. Ordering most of the electronics parts today. But. . . . The enclosure (12 x12 5