I seem to be having slotting problems with gschem. If I add a 7474
component, for instance, and change its slot number to 2, the pin
numbers don't update. In the gschem log I see:
Opened file [/home/des0prb/geda/share/gEDA/sym/74/7474-1.sym]
numslots attribute missing
Slotting not allowed for
I seem to be having slotting problems with gschem. If I add a 7474
component, for instance, and change its slot number to 2, the pin
numbers don't update. In the gschem log I see:
How are you changing the slot number? If you change the slot
number by directly editing the slot=
Hi,
Is there any way to open easy-pc files (extensions .sch and .pcb) using
gshem and pcb?
I've had a look on the web but didn't find anything helpfull.
I work on a linux pc (Fedora core version 5) with geda, but need to
interact with my colleagues who use easy-pc.
Thanks for any suggestions
On Wed, Nov 01, 2006 at 10:58:02PM -0500, DJ Delorie wrote:
It all depends on what you're into. I've been discussing a
project with a friend that would involve building what amounts to a
copy of the PDP-8 (Straight-8, no suffix) with individual
transistors. It's fun, cool, and
On Thu, Nov 02, 2006 at 12:53:13AM -0500, Dave McGuire wrote:
On Nov 1, 2006, at 10:58 PM, DJ Delorie wrote:
It all depends on what you're into. I've been discussing a
project with a friend that would involve building what amounts to a
copy of the PDP-8 (Straight-8, no suffix) with
On Wed, Nov 01, 2006 at 10:58:57PM +, Michael Sokolov wrote:
Steve Meier [EMAIL PROTECTED] wrote:
Sure why not here is a link to an individual who built a replica of the
Apollo Guidance System, using discrete components and wire wrap, in his
basement.
Of course a discrete logic
Dave McGuire wrote:
It all depends on what you're into. I've been discussing a project
with a friend that would involve building what amounts to a copy of the
PDP-8 (Straight-8, no suffix) with individual transistors. It's fun,
cool, and highly educational in a number of areas.
The
Ohh my ohh my... well you do know that, from the William
Gibson/Bruce Sterling novel The Difference Engine, someone who
writes code for a mechanical babage computational engine is known as
a clacker?
Yup, I've got that book.
___
geda-user mailing
I am looking forward to the day when the receiver will be finished and I can
place a fully transistorized and 19 transistors retro labels on them :)
transistor radio :-)
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geda-user@moria.seul.org
On 11/1/06, DJ Delorie [EMAIL PROTECTED] wrote:
I played with the op-amp idea, and actually got a working prototype on
proto-board.
http://www.delorie.com/pcb/io_port4.sch
The out (line-driving) op amps come in a tiny dual-amp package, and
the use of resistor dividers and ability to swap +/-
Karel Kulhavy [EMAIL PROTECTED] wrote:
When the ISP detects this,
Do you think that ISPs have nothing better to do than go into the low
level debug features of their DSLAMs, look at individual packets in hex
etc. to detect that I started using a different implementation of their
line management
Hi John,
On Thursday 02 November 2006 15:32, John Griessen wrote:
When creating a slotted symbol,
How do you use slotdef attribute? I have not found creating a
slotted symbol in the gschem manual
The symbol creation guide is here:
http://geda.seul.org/wiki/geda:scg
And the attributes list
On Nov 2, 2006, at 10:05 AM, DJ Delorie wrote:
Well my tentative plan is to duplicate the functionality of the
individual boards, but not to scale. Many DEC machines of that era
were built with Flip Chip boards, 2.5x5 PCBs with card-edge
connectors that typically implement relatively little
Hi John
Here is a link for gEDA: HowTo, Tune-Up, Quirks, TipsTricks for Ubuntu
Edgy version:
http://ubuntuforums.org/showthread.php?t=282040highlight=geda
I am trying to share my experience and to solve some mysteries of
dealing with gEDA
To use slotdef attributes, you can edit your component and
On Nov 2, 2006, at 9:16 AM, John Griessen wrote:
The education could lead to real world washing machine controller
stuff too -- by switching to printed organic transistors...where
you can go straight to power handling with the same printed
material. Which one is the MSP430 series from? The
Title: gEDA user with problems
Hello,
Could somebody show me what I am doing wrong? I am using Ubuntu Edgy with gEDA default package.
1) I am trying to activate the auto numbering for components placement. I modified /etc/gEDA/system-gschemrc to:
(load (string-append gedadatarc
Be sure to check how long it takes the op-amps to come out of
saturation if you intend to use this for high-speed signals.
Comparators (ones with totem-pole outputs) are usually better suited
to this application.
I'll look into it. The thing about op amps is that they're cheap and
tiny.
On Nov 2, 2006, at 4:35 PM, Michael Sokolov wrote:
When the ISP detects this,
Do you think that ISPs have nothing better to do than go into the low
level debug features of their DSLAMs, look at individual packets in
hex
etc. to detect that I started using a different implementation of
Dave McGuire wrote:
Are printed organic transistors ready for prime-time?
Not quite. Or at least, the processes that work well are kept secret, applied
to small displays -- not necessarily easy in a garage shop. But for some things
where short lifetime is OK, there are recipes used
Adrian Nania wrote:
1) I am trying to activate the auto numbering for components placement.
I modified /etc/gEDA/system-gschemrc to:
^
Better leave the systemrc alone and copy the relevant lines to
$HOME/.gEDA/gschemrc
(load (string-append gedadatarc
On 11/2/06, Michael Sokolov [EMAIL PROTECTED] wrote:
Do you think that ISPs have nothing better to do than go into the low
level debug features of their DSLAMs, look at individual packets in hex
etc. to detect that I started using a different implementation of their
line management protocol?
I got the replacement LDO today and swapped it in. Carefully checked
the voltages; all OK and no magic smoke this time.
The only fix I've had to make so far is that I didn't tie the HOLD and
RDY lines at all, and the m3a board has them tied in an inconvenient
way. Yup, locked up the chip. One
On Thursday 02 November 2006 12:51, DJ Delorie wrote:
Be sure to check how long it takes the op-amps to come out of
saturation if you intend to use this for high-speed signals.
Comparators (ones with totem-pole outputs) are usually better suited
to this application.
I'll look into it.
On Thu, 2 Nov 2006 16:35:48 GMT
[EMAIL PROTECTED] (Michael Sokolov) wrote:
When the ISP detects this,
Do you think that ISPs have nothing better to do than go into the low
level debug features of their DSLAMs, look at individual packets in hex
etc. to detect that I started using a
On Thursday 02 November 2006 19:06, DJ Delorie wrote:
So, once the configuration was figured out, all 4Mb of SRAM passed the
memtest I wrote! It was a simple one, writing out a deterministic
pseudorandom sequence, then reading it back in and comparing.
Testing RAM in Embedded Systems
Address
[snip]
but I can not see any effect.
The source-library paths tell gschem2pcb and pcb where to find the
footprints. This will not affect gschem in any way. Use it to give the
path to your local footprint files.
This isn't correct. The source-library rc keyword and associated
path is
Hi,
[snip]
Could somebody show me what I am doing wrong? I am using Ubuntu Edgy
with gEDA default package.
1) I am trying to activate the auto numbering for components placement.
I modified /etc/gEDA/system-gschemrc to:
...
(load (string-append gedadatarc /scheme/auto-uref.scm))
(add-hook!
On 11/2/06, DJ Delorie [EMAIL PROTECTED] wrote:
I've got blinky lights!
Congratulations.
Nothing like the immense satisfaction of the blinky light. Difficult
to explain to
others the amount of joy a single flashing LED brings ;-)
(* jcl *)
--
http://www.luciani.org
[snip]
None of these work for me. I'm not sure how to use the Edit/Slot...
function - it doesn't even seem to change the slot attribute value
(select component, choose Edit/Slot..., change value of slot in dialog).
The dialog box changes the slot attribute value but doesn't update the
pins.
I'll look into it. The thing about op amps is that they're cheap
and tiny.
Which frequently gets people into trouble when they try to use
Op-Amps as Comparators:
I don't mind using comparators as long as they're tiny.
You know, if I keep on just trying stuff I'll eventually learn
Which frequently gets people into trouble when they try to use
Op-Amps as Comparators:
There do seem to be comparators in the size, speed, and type I need;
although not as plentiful as op amps.
Specs:
* push-pull output (they drive both P and N MOSFETS).
* 1MHz or so (~1uS delay)
* =
John Luciani wrote:
On 11/2/06, DJ Delorie [EMAIL PROTECTED] wrote:
I've got blinky lights!
Congratulations.
Nothing like the immense satisfaction of the blinky light. Difficult
to explain to
others the amount of joy a single flashing LED brings ;-)
Except for those who have
On Nov 2, 2006, at 8:15 PM, Bob Paddock wrote:
I'll look into it. The thing about op amps is that they're cheap and
tiny.
Which frequently gets people into trouble when they try to use
Op-Amps as Comparators:
...
TI:
Op Amps and Comparators - Don't Confuse Them
Operational amplifiers (op
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