Re: Free PCB question
2011-02-21 by Andrew
Charles, A very good answer. I have not found the learning curve on KiCad to be that steep, nor the re-learning curve either -- I tend to do a couple of
Messages
Browse messages
Page 163 of 707 · 35337 messages matched
Re: [Homebrew_PCBs] Re: NETS
2011-02-20 by Donald H Locker
It happens in the real world too, I m afraid. Donald. -- *Plain Text* email -- it s an accessibility issue () no proprietary attachments; no html mail /
Re: [Homebrew_PCBs] Re: NETS
2011-02-20 by Andrew Hakman
... Heh, and if you re a *HDL designer / ASIC person, you got to watch out for those pesky wire patches that connect 2 nets together - no component gets
Re: [Homebrew_PCBs] Re: NETS
2011-02-20 by Piers Goodhew
.. and there s always the zero Ohm resistor - handy for joining nets. (Handy also for going over traces on 1 (or few) layer(s) boards - except then things that
Re: [Homebrew_PCBs] Re: NETS
2011-02-20 by Randy S.
Oh ok .. yeah .. makes sense .. I dont think FreePCB will let you do that .. One nice thing in it .. is you can create your own parts in the footprint editor
Re: NETS
2011-02-20 by designer_craig
Yes, if you connect a new component pin up to a existing net becomes part of the net. There is an exception in the PCB layout program. It is sometimes
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-20 by Randy S.
when I try the link for the mini-tutorial I get this : There is currently no text in this page. You can search for this page title in other pages, or search
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-20 by Donald H Locker
I should add that I m a big fan of LTspice, mentioned in an earlier post. Great way to make sure that I don t have any thinkos built into my design. I do
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-19 by Randy S.
And isn t it the point of a PCB pgm -- generate the CAM files, not a printout? I am doing a toner transfer to copper clad and etching the board myself.
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-19 by Donald H Locker
is a great place to start. The basic process is eeschema (make a schematic), cvpcb (associate
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-19 by rocko
Go here for a comparison of free CAD s Eagle, Kicad and Design Spark. http://electron-orbit.com/
Re: [Homebrew_PCBs] NETS
2011-02-19 by Jim Tonne
I am working on an active bandpass designer (another freebie) and came up for air and saw Leon s note. Leon: Where do I send payment for that? :-) - JimT
Re: [Homebrew_PCBs] NETS
2011-02-19 by Leon Heller
... Jim is the author of Elsie, a very useful piece of software for designing filters: http://www.tonnesoftware.com/ Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-19 by Charles Patton
I guess it boils down to different strokes for different folks. I ve done boards using FreePCB, KiCad, PC Express, Eagle, and early ORCAD. I just don t do
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-19 by Randy S.
HOW RUDE !! LMAO .. just kiddin Well .. I will migrate to one of the others as soon as I have time.. I will say one thing about the FreePCB .. Using that and
Re: [Homebrew_PCBs] Re: ARRL Handbook PCB Layouts
2011-02-19 by Randy S.
Thanks Les .. yeah I looked .. I could see if my inkjet at home can .. then can always bring that into work to copy .. But the alt-prt-scrn seems to work fine
Re: [Homebrew_PCBs] Re: PCB drilling vacuum table ??
2011-02-19 by David Bobb
The milling machines we have at work use vacuum tables for flat stock. Sent from my Droid. On Feb 19, 2011 3:22 PM, designer_craig
Re: PCB drilling vacuum table ??
2011-02-19 by designer_craig
Clamps get in the way of island milling and they will not hold down the PCB material as flat as I would like for fine milled traces as would a vacuum table.
Re: [Homebrew_PCBs] PCB drilling vacuum table ??
2011-02-19 by Jan Kok
... Why use a vacuum table? Why not use hold down clamps, something like what is commonly used on milling machine tables?
Re: Free PCB question
2011-02-19 by Andrew
Okay -- no schematic editor, no way to print out directly from the program ... I don t mean to be rude (well, maybe just a little! :)), but why would anyone
Re: [Homebrew_PCBs] Re: Problems with GBC H220
2011-02-19 by rocko
Thanks for the tip. :) Yeah I kinda noticed I was getting the Beep after about only 10 minutes, even though the manual says can take up to 30min.
Re: [Homebrew_PCBs] NETS
2011-02-19 by Jim Tonne
Before schematic entry as we know it today, all circuit analysis programs used netlists as the input method. This includes of course SPICE and all of the
Re: [Homebrew_PCBs] Free PCB question
2011-02-19 by Charles Patton
Free editors I suggested earlier are: a) I have briefly tested Suigyodo Schematic (http://www.suigyodo.com/online/e/index.htm) and it seems to work fine and is
Retouching exported images
2011-02-19 by kilocycles
I use Eagle s image export to a .bmp file for my 1 and 2-sided boards. I then take the image(s) to Photoshop and convert them grayscale, set the contrast,
Re: [Homebrew_PCBs] Free PCB question
2011-02-19 by Randy S.
I would but .. sorry for ignorance here .. dont see a schematic editor with FreePCB ?? Do I import it form another program? ________________________________
Re: [Homebrew_PCBs] Re: NETS
2011-02-19 by Randy S.
Awesome thanks .. So if a pin on an IC for example, goes to a cap, and a resistor .. then that would be one net thats attached to 3 places .. and might show up
Re: Problems with GBC H220
2011-02-19 by leeleduc
I ve been using the GBC H220 for a few months now and it works fine. Changing the two gears helps. I set the thickness for 5 mil. Also, you should ignore the
Re: [Homebrew_PCBs] NETS
2011-02-19 by Leon Heller
Nets on a schematic are the connections between pins - pins that are connected together are on the same net. Nets are automatically allocated names in
Re: [Homebrew_PCBs] Free PCB question
2011-02-19 by Leon Heller
... I d create a schematic for that. It ll only take a few minutes and would prevent a wrong connection on the PCB. Leon -- Leon Heller G1HSM
Re: ARRL Handbook PCB Layouts
2011-02-19 by Les
Hi Randy, Some printers have a box you can tic in the printer configuration that gives a mirror printout. Les.
Re: NETS
2011-02-19 by designer_craig
Randy, In any electronic circuit, the pins of the various components that are connected together are called a net. Generally a net connects two or more
RE: [Homebrew_PCBs] NETS
2011-02-19 by Dave
Not sure how far back NETS go but I encountered them with Spice. Basically a net or netlist is an abstract representation of a circuit. It contains the
Fw: [Homebrew_PCBs] Re: PCB drilling vacuum table ??
2011-02-19 by designer_craig
Thanks, That was a good suggestion, I picked up a 12 x 12 piece today at Halted, our local surplus outlet. Its not as stiff as I would like but it is open
Re: [Homebrew_PCBs] Re: Eagle CAD Question
2011-02-19 by Piers Goodhew
Aaaah, I see. I m a mostly 1-sided, no silkscreen and as few drill holes as possible kind of guy, so I didn t think of that PG
Re: [Homebrew_PCBs] NETS
2011-02-19 by Piers Goodhew
It may just be me, but I found the easiest way to understand nets was from the commonest one: GND - the reason for naming them is you can have things
Re: Eagle CAD Question
2011-02-19 by mike2ls
ahhh I see, well the camjob does all that in 1 click, I can export all those multiple images in a single click so topcopper, bottomcopper, topsilk, gerbers if
Re: [Homebrew_PCBs] NETS
2011-02-19 by rrrydman@aol.com
Hi Randy, My understanding of nets is that they are networks . A trace that goes from one pin to another is a net. Another third pin to a different pin is
Re: [Homebrew_PCBs] Problems with GBC H220
2011-02-19 by rocko
Thanks I swapped the gears and after 5 passes I got almost perfect traces, about 80% Tomorrow I ll try 7-10 passes. Been using the Pulsar toner paper, but I
Re: [Homebrew_PCBs] NETS
2011-02-19 by Adam Shea
A net is just a list of connected pins. This is the primary input from the Schematic capture program to the PCB. They mainly serve as guides for what pins
Re: [Homebrew_PCBs] ARRL Handbook PCB Layouts
2011-02-19 by Randy S.
Disregard please.. Figured it out .. ALT-PRT SCRN to Paint and Flip and print. ________________________________ From: Randy S. To:
ARRL Handbook PCB Layouts
2011-02-19 by Randy S.
They are not mirrored, and not images that you can copy and paste into an editor. What were they thinking ? Is anyone else out there making ARRL handbook PCBs
Re: [Homebrew_PCBs] FreePCB question
2011-02-19 by Randy S.
ok .. thanks .. Will still be trying Kicad when time permits to learn .. Cant imagine anyone would release a piece of software that doesnt print ..
Re: [Homebrew_PCBs] FreePCB question
2011-02-19 by Charles Patton
FreePCB has not implemented the print function. You need to generate the CAM files (Gerbers) and view them with a free viewer such as GC-Prevue from
NETS
2011-02-19 by Randy S.
Whats the concept of nets in all this pcb creation process? Randy
Re: [Homebrew_PCBs] Problems with GBC H220
2011-02-19 by Jan Kok
The H-220 works a lot better if you swap the two gears between the motor and the rollers in order to slow down the rollers. The mod is described at
FreePCB question
2011-02-19 by Randy S.
I cant seem to be able to print .. The option is grayed out .. Do I have to finalize something? Or export or create something? Randy
FreePCB additional Parts Library?
2011-02-19 by Randy S.
Are there any additional parts libraries available for Free PCB .. or are they on the site somewhere and I missed them ? PS .. Thanks for all the inputs and
Re: [Homebrew_PCBs] Free PCB question
2011-02-19 by Randy S.
Its a very simple high voltage power supply board .. can do it my head easy enough .. Just diodes, bypass caps, glitch and surge resistors. Thats it ..
RE: [Homebrew_PCBs] Free PCB question
2011-02-19 by Steve Maroney
DipTrace.com !!! Best Regards, Steve Maroney Business Computer Support, LLC Mobile Phone:504-914-4704 Office Phone: 504-904-0266 Fax: 866-871-7797 From:
Problems with GBC H220
2011-02-18 by acidblue
Just bought a GBC H220 and must say I am very disappointed, and plan on bringing it back. I cannot get the toner to transfer to the pcb. I am using the Pulsar