On monday the first gerbers made with pcb from the current iso image will
go to the fab. I appreciate, that the layer commands have been reworked.
No more identical layer names, no need to apply my renaming sed script :-)
While looking at the gerbers, I notice that there is an additional layer
at
Some time ago I promised to turn my notes during my first geda
projects into bug reports and feature requests and send them to this
mailing list. Some of the issues may be resolved, some may be
misunderstandings by a newbie and some may be known but need too much
work. I hope you don't smack me if
Hello fellow gEDA users,
There is one rule about gschem symbols the rationale for which evades
me. The symbol creation guide says that the device= attribute should be
made invisible and not used as a label, and that the label should be a
separate text object. And indeed all standard symbols foll
Darryl Gibson wrote:
I'm under time constraints to get this project done. So I'm cheating,
and using RCY100 for the resistors.
uh ... what's rcy100?
Phil
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> I put an example of how I did two transistors in one package. DJ's
> preview drew the lines 10X thicker than they show up in
> gschem... not sure what is off...I'm using very recent cvs of both
> gschem and pcb...
I'll try to find time to look into that over the weekend.
Meador, Ryan D wrote:
Thank you for your quick replies.
I put an example of how I did two transistors in one package. DJ's preview
drew the lines 10X thicker than they show up in gschem... not sure what is
off...I'm using very recent cvs of both gschem and pcb...
http://www.gedasymbols
Meador, Ryan D wrote:
laying out symbols to be logical rather than
reflect the actual look of the device.
is the only option for me to redraw
the symbol to have 8 pins and then connect the ones that should be connected
on the schematic?
You can redo the symbol so it looks the same, but ye
Karel Kulhavy wrote:
Do you know at which voltage a typical red LED breaks down in reverse? 100V?
Nope, 5v, and some are as low as 3v.
What happens when the diode is charged slowly with a current source of say
0.5mA until it breaks down and it's internal capacitance discharges by
avalanche?
Samuel A. Falvo II wrote:
On 11/17/06, joeft <[EMAIL PROTECTED]> wrote:
If you are talking about a current applied in the "reverse" direction it
won't light up at all. I haven't looked at the very bright LEDs that
have been marketed recently, but in general I would say that most LEDs
make lous
Have you tried just naming the pins all the same?
The autorouter might not do the right thing, but DRC shouldn't
complain.
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Thank you for your quick replies. Unfortunately, I don't think I adequately
conveyed my question... your answers didn't tell me anything I don't already
know. Please pardon me for not quoting them, here, as between the 3 I
received so far, it would be a lot of text. I'm aware it is bad practice
[EMAIL PROTECTED] wrote:
Darryl Gibson wrote:
But, I would really, really like my resistors, and diodes standing up,
not laying down.
Darryl here are three vertical footprints. I've used them before. I
just cleaned them up a little. Let the list know if they work for you.
These foots ar
Darryl Gibson wrote:
But, I would really, really like my resistors, and diodes standing up,
not laying down.
Darryl here are three vertical footprints. I've used them before. I
just cleaned them up a little. Let the list know if they work for you.
These foots are named withing the Elemen
On 11/17/06, joeft <[EMAIL PROTECTED]> wrote:
If you are talking about a current applied in the "reverse" direction it
won't light up at all. I haven't looked at the very bright LEDs that
have been marketed recently, but in general I would say that most LEDs
make lousy capacitors and won't store
Karel Kulhavy wrote:
Do you know at which voltage a typical red LED breaks down in reverse? 100V?
No, more like 5v or so. LEDs are not designed for high reverse
breakdown voltages.
What happens when the diode is charged slowly with a current source of say
0.5mA until it breaks down and i
Karel Kulhavy wrote:
Do you know at which voltage a typical red LED breaks down in reverse? 100V?
[jg]usual is 10, 15, 20 Volts onlyfor the ones from 1979 in a hemisphere on
cylinder plastic molding
What happens when the diode is charged slowly with a current source of say
0.5mA
Do you know at which voltage a typical red LED breaks down in reverse? 100V?
What happens when the diode is charged slowly with a current source of say
0.5mA until it breaks down and it's internal capacitance discharges by
avalanche? Will it blink or stay dark in the process?
Wikipedia says an a
Meador, Ryan D wrote:
my real problem has to do with the fact that my FET's package is SO8.
3 pins are source, 4 are drain and 1 is gate. How to I convey to gschem that
the single source and drain symbol pins should actually be connected to
multiple physical pins?
The secret is "conne
On 11/17/06, Meador, Ryan D <[EMAIL PROTECTED]> wrote:
This issue has also come up with parts that have
many ground connections, such as the ADXL321 accelerometer; it would be
logical for the symbol to have 1 ground pin connected to many physical pins,
but until I ran up against this problem with
[.]
my real problem has to do with the fact that my FET's package is SO8.
3 pins are source, 4 are drain and 1 is gate. How to I convey to gschem that
the single source and drain symbol pins should actually be connected to
multiple physical pins?
Redraw the symbol to incorporate multiple p
Hi all,
I'm at the stage in my circuit design where I need to start worrying about
converting my schematic to a PCB. I was playing with PCB earlier today and I
found the official PCB documentation to be very, very helpful - I wish the
gschem docs were as good (the gschem wiki seems a little scatte
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