Re: gEDA-user: Design Nark
Andy Fierman wrote: Is it just me being a Grumpy Old Man or does anyone else take issue with RS over their advertising for their Design Spark EDA tool? (Disclaimer: My opinions only, and nothing to do with my employer) If you feel strongly enough about it, why not report it to the ASA? If they're advertising it as open source but it's not, that would appear to be a clear-cut case of false advertising. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Anybody have any experience with cheap chinese reflow ovens?
yamazakir2 wrote: I'm talking about ones such as these: http://cgi.ebay.com/T-962-INFRARED-IC-HEATER-REFLOW-WAVE-OVEN-BGA-T962-a5-/120664888674?pt=LH_DefaultDomain_0hash=item1c18301562 It seems like $320 shipped is pretty cheap for a reflow oven... to the point where I question the quality/reliability. Getting one of these would make assembling my boards 2-3x faster,so it's tempting. There's an article on the SparkFun website where they claim that you're better off buying a domestic hot-plate (!) ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: transition of pcb internal units to metric (SI, mm)
Andrew Miner wrote: The current standard for wafer diameter is 300 mm (11.8) = 109 sq inches. You would loose about 1/4 of the area to the edge effects on the wafer so you are looking at ~75 in sq of usable space. When you consider that most of the parts that we use on our PCBs have an IC die size of (much) less than 1/2 of a sq inch, you could reasonably hope to fit 100 different chips on a wafer. That would drop the $1 to $3 million dollars down to $10,000 to $30,000 per chip on the wafer. They can then make a hundred wafers easily on the first batch, so there would be 100 of each chip for that cost. If you were talking about a 0.1 sq inch chip, as a student project, you might be able to get in cheaper than that. I am not an expert on ASIC manufacture, but I think that you've made some incorrect assumptions there. Yes, the standard wafer at current cutting-edge processes is 300 mm (although for older and non-standard processes, smaller wafers are common); however, I don't believe that you'd be able to get a mask (a.k.a. reticle) set that would cover the entire surface of that wafer. A reticle will only cover a proportion of the wafer's surface, and to cover the whole wafer surface, the reticle will be used to expose the surface of the wafer repeatedly, using a piece of equipment called a stepper. Therefore, the maximum number of different chips you can have on a wafer is limited by the maximum reticle size, not the wafer size. At a guess, I'd say that the maximum image size would be about 100 mm x 100 mm (once exposed on the wafer surface). Also, the larger the reticle, the more uneven the spread of devices (e.g. one device in the MPW may get 4 working impressions, but another may get two because it's hanging over the edge of the wafer in the other two instances). This would, however, still give you one hundred 100mm^2 different devices within a single reticle, and 100mm^2 is still a lot of transistors at 90 nm or 65 nm. Of course, you could in theory make multiple mask sets to image different parts of the wafer, but that would defeat the object of the MPW. You would also have to take into account that you're unlikely to get all the MPW's customers to agree to a uniform die size, so some of the dice will be lost as the wafer is cut up, since the saws used will typically only make straight cuts all the way across the surface of the wafer - you can't turn corners. So, out of the 100-wafer lot, maybe 25 of them will be cut for your die. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Random thoughts on the future interface of PCB
Anthony Blake wrote: Stephen Ecob wrote: 1. Would any of the existing maintainers be able to devote more time to gEDA if they had financial support to do so ? I'm aiming to finish University in a few months.. if people would like to fund work on the toporouter, then I would be pretty keen to work on it full time. Not wanting to put too much of a spanner in the works... It would need to be thought out carefully - for example, I'm pretty sure that in the UK, the sorts of sums of money that are being talked about mean that HMRC would be interested for income tax / national insurance purposes. Whilst I'm not saying it couldn't be done, the overheads of going self-employed (which is what this is) for a short period might mean that the $15k (or whatever) ends up being significantly less in the hands of the developer. Of course, for a developer that's already self-employed... ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Commercial CAD, land pattern generators report
John Griessen wrote: On Fri, Aug 13, 2010 at 10:54 AM, Peter Clifton pc...@cam.ac.uk wrote: On Thu, 2010-08-12 at 09:17 -0500, John Griessen wrote: OpenNurbs.org has the code, public domain. He's considering forking and licensing it GPL. IMO, that sounds like quite an aggressive thing to do to a code base.. particularly forking, then choosing a less permissive license to release under. He finds there is little community involved using it and no one improving the code except the original commercial publisher for bug fixes. That's the only reason for a fork. ...or the forker has sigificant issues with the way in which the original author/project leader is managing the original tool. For example, the IPCop fork of Smoothwall. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: [OT] Fluorescent tube help
Chris Smith wrote: I recently purchased an old, second-hand UV exposure box to try making PCBs at home. One of the tubes has started to fail and in replacing them I have noticed something odd: the box takes two 12 8W T5 tubes, but has only a single 13W switch-start ballast. I assumed that a previous owner uprated the tubes without changing the ballast, but in looking for a replacement I have become stuck. 2. two tubes can be wired in series here in the UK because of the higher mains voltage, but the suggestion is that a special ballast might be needed. Again, no explanation why. From my limited knowledge of how fluorescent tubes work... During the start phase, the starter short-circuits the tube allowing current to flow through the starter and the heating filaments at the ends of the tube. If you put two tubes in series and the starter is integrated into the ballast, how do you wire them so that this mechanism still works? The starter won't be able to heat one end of each tube. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: OT: Bike Alarms
On Sun, 2010-05-16 at 20:09 -0500, John Griessen wrote: Lojack gets results for cars. There's bound to be some way to do something that fits in with what happens with bikes. Why give up so easy? It's easier to fit to cars because there are more places to hide a box like this, and the car has a permanent power supply available so the user doesn't have to take the unit out for recharging. It's not necessarily giving up easy. If someone takes a product to market without it being critiqued then it's likely to have fundamental flaws because of issues that the original designer did not forsee. I don't think that it's necessarily a bad idea, just that there are a number of significant issues in making it work on a practical basis for a wider market than just the enthusiast that designed it. Taking the headset off a bike is not too long or difficult on some kinds. That might be an access point for some RF transparent frames. Restricting to non-metallic frames would seriously impact the available market, and even on a carbon-fibre frame, is the headset tube carbon-fibre as well? I would have thought that that bit would be metal anyway. A thief would not get results taking headsets off bikes he wanted to take... so it's not a dead end. Also a bit of a PITA for the user having to take off the headset frequently for recharging. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: OT: Bike Alarms (was: Re: Copper-free area in footprint)
On Thu, 2010-05-13 at 11:19 -0700, Jared Casper wrote: How cheap a service contract can you get for the sim card? Unless you can get a per-SMS plan or something, after a year or two you may be approaching a non-trivial percentage of the cost of replacement. While the tech solution is definitely cooler, covering the bike under a renter's or home owner's insurance policy may be cheaper and easier. I don't know your location, but in the UK you can get a PAYG SIM where you only pay per SMS (about 10p each), and as long as you send a message once every few months or so, your credit doesn't run out. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: OT: Bike Alarms (was: Re: Copper-free area in footprint)
John Griessen wrote: David C. Kerber wrote: If you've got a carbon frame, you could drop it into the seat tube, where it would never be seen, and therefore never removed by a thief... This really does sound like a product since bikes can cost these days. Not to put too much of a spanner in the works, but... Where does the power come from? How long would it last between recharges? I can't see much of a market if you have to remove the saddle and turn the bike upside down to extract the device every week to recharge the battery, especially if it's sitting unused in the garage. People will forget to do it, and then the device is rendered impotent. Remember that Li-Ion batteries have a nasty habit of self-discharging, and if you've gone to the expense of getting a super-light carbon fibre bike frame, you're unlikely to want to add lots of weight with a large battery. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: OT: Bike Alarms
David C. Kerber wrote: Remember what the original suggestion was: have the device wake up for a few seconds once a day and send a message as to where it is (or maybe only send that message if it's not where it's supposed to be). Yes, I remember the original suggestion; I don't know what the GPS performance is, but most GPSs have a cold-start TTFF of a few minutes, so the few seconds is already a few minutes. I'm not necessarily saying that the problems are necessarily insurmountable, just that I think that there might be a bit more of a problem with power consumption than you think. Of course, we also have the problem of getting a decent GPS fix, since if it's stolen, it will need to get enough signal to report its position, and if it's being stored inside a building, that's going to be very difficult, even before you take the possibility of a metal-framed bike into account. Considering that a typical bike-mounted gps (Garmin Edge 305, for example) can run for several hours on 3xAA batteries, including gps, cadence, heartrate and speed sensors, along with a continuous display, I think a couple of AA batteries would power this thing for several months or even years, at a few seconds per day. I doubt that the cadence/heartrate/speed measurement is going to have any significant effect on the power consumption - most non-GPS cycle computers will do that for months if not years on a coin cell. It's the GPS and GSM that suck the power. And if you can tie it in to Shimano's DI-2 power pack, it will have its power routinely recharged by the user every few weeks for other purposes any way. True, but then it becomes more difficult to hide inside the frame, and get wires into/out of the frame. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: any last minute advice prior to sending out for PCB fab
On Tue, Feb 23, 2010 at 10:01:55PM -0500, gene glick wrote: what else? Any suggestions? Check your hole dimensions, especially on connectors - a correctly-routed board is not much use if your connector pins won't fit through the holes... -- David SmithWork Email: dave.sm...@st.com STMicroelectronics Home Email: david.sm...@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Calculating component area verses available board area?
Can't help on the direct question, but... On Tue, Dec 01, 2009 at 10:06:56AM -0500, Bob Paddock wrote: In PCB is there a way to get a sum of all of the component footprint/silk areas, so that the sum can be compared to the available board surface area? Board surface needs to account for any keep-outs where components can not be place. May or may not want to count both sides of the board. Boss is telling me to put 230 parts on a board that I think I can put 175. That is not even accounting for space for actual traces and vias. I'm looking for object numbers to inflict on him. Tell him that if he thinks he can do better, then he's welcome to demonstrate how to do it... :-) This happens often enough that I want it to be an automated process. I would worry that the utilisation (as we call it in the digital ASIC industry) would be too blunt a measure, and that you'd potentially be setting yourself up for future problems. You did the last board at 80% utilisation, so why can't you do this one which is only 70%? -- David SmithWork Email: dave.sm...@st.com STMicroelectronics Home Email: david.sm...@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: My uEDA-designed open source hardware board works!
On Wed, Oct 28, 2009 at 04:12:12AM +, Michael Sokolov wrote: * Being unhappy with the too-much-GUI-for-me EDA programs like gEDA, I wrote my own non-GUI, non-WYSIWYG, totally Makefile-driven EDA system (uEDA) to make this board and others in the future, and this board project is naturally uEDA's first. GUI-indoctrinated professional hardware engineer types may scream in horror at the thought of non-GUI, non-WYSIWYG EDA, yet I've designed a board of this complexity with it and it works! Not necessarily - this is a change that the ASIC world went through many years ago. When I first started (mid 90s), we were using synthesis tools to generate sub-block netlists, but then the top-level integration was done using schematic capture. Nowadays, it's done by writing HDL (VHDL or Verilog) text netlists which connect them together. I could certainly see the attraction of text-based netlist generation for a heavily digital board, particularly one with lots of busses flying around. For the stuff I design at home, though, I think I'd stick to GUI-based schematic capture, as virtually all of my digital stuff goes inside a single EPLD/FPGA, and the schematic is all the analogue stuff (PSU, I/O signal conversion, etc.) However, I think you'd have a problem with non-GUI PCB layout. Whilst you could automate all of the routing and some of the placement, I'd really struggle without a GUI for placing the parts where their location matters (e.g. connectors, front panel stuff, etc.). I suspect that doing this textually would be a rather tedious and long-winded process. Again, there are parallels with the ASIC world, in that a GUI tool is usually used to create a floorplan for a block, which defines the layout perimeter, the locations of all I/O pins, and sometimes the placement of a small number of cells within the block, but the placement and routing of most of the cells is left entirely to the automatic tools. For professional PCB layout of complex boards, the PCB designer will usually place the connectors, switches, displays, etc. and some of the critical components, and then let the tool auto-place and then route the rest. -- David SmithWork Email: dave.sm...@st.com STMicroelectronics Home Email: david.sm...@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: single-sided boards
On Tue, Mar 03, 2009 at 07:05:05PM +, Kai-Martin Knaak wrote: On Tue, 03 Mar 2009 16:47:28 +, David SMITH wrote: From a user's point-of-view, it makes life much easier because they no longer have the hassle of generating Gerbers (e.g. getting the correct version of RS274, putting in the right number of decimal places, including a readme file to indicate which layer is which, etc...) There are no such options in the gerber export dialog of pcb. Maybe not, but it's there in other packages, though, so this info still needs to be communicated to the fab somehow (as it doesn't go in the Gerber file itself), or you rely on them making correct assumptions. Just looking at the FAQs on many of the PCB fab websites, it is clear that people make all types of mistakes generating Gerbers (layer order wrong, drill file mistakes, etc...). Being able to put this process in the hands of the professionals who are doing it all the time just means that errors are likely to be eliminated. -- David SmithWork Email: dave.sm...@st.com STMicroelectronics Home Email: david.sm...@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: single-sided boards
On Tue, Mar 03, 2009 at 11:37:35AM +0300, Ineiev wrote: On 3/2/09, David SMITH dave.sm...@st.com wrote: If I may make a suggestion - solve the layer handling problem which prevents PCB's data files from being taken directly by companies like www.pcb-pool.com. (I think it's something to do with the fact that the file doesn't contain any info to define the meaning of each layer (e.g. top copper, bottom copper, etc.) What layer handling problem do you speak of? The top and bottom copper layers _are_ marked in PCB files; and other copper layers are ordered as well. As I understand, PCB files are not taken directly because PCB users send to the manufacturers Gerber files rather than force them to install the program on their machines. I'm afraid that I don't remember much more than I've already told you. Some PCB manufacturers (e.g. pcb-pool) will take native files as well as just Gerbers. I guess that the manufacturer either has a copy of that tool installed locally, or they've developed an automated conversion script. From a user's point-of-view, it makes life much easier because they no longer have the hassle of generating Gerbers (e.g. getting the correct version of RS274, putting in the right number of decimal places, including a readme file to indicate which layer is which, etc...) In my case, I just send them my application's native file. For someone who makes one PCB every year or so, it means that I don't have to worry about making sure that the Gerber generation settings are correct, and if there's a problem (e.g. layers are in the wrong order, etc.) it's definitely their mistake, not mine :-). I guess it's one way in which manufacturers can gain competitive advantage by making their customers' lives easier. I remember at some point suggesting that pcb-pool should support 'pcb' files natively, and they said that it wasn't currently possible because some necessary information was missing from the file format. I thought that they said it was the layer definition information, but ICBW. This was a few years ago, so things might have changed since. rant If only the PCB manufacturing industry could standardise on a new, open format that solves Gerber's shortcomings. It does seem to be rather silly that we're still using a file format that was defined in the days when memory was so expensive that they did away with the decimal points... /rant -- David SmithWork Email: dave.sm...@st.com STMicroelectronics Home Email: david.sm...@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: [PATCH 0/4][PCB] Color setting updates
On Tue, Mar 03, 2009 at 01:16:25AM -0600, Peter Tyser wrote: 4 I imagine some users might not want to inherit the colors of the PCBs they open. I'd agree with this. Remember that some of us are colourblind, so we might choose colour schemes that seem wierd to normal people. I agree that it would be nice to have the ability to store colors in a .pcb file, but I thought that these changes would be an improvement with or without that feature. If others have some suggestions as far as a cleaner implementation or about saving/loading colors in the .pcb files I'd be happy to give it a go. Personally, I'd say that a .pcb file should describe the attributes of the PCB itself, not how the application should display it. Things like display colours of layers should be defined by the user's global settings. -- David SmithWork Email: dave.sm...@st.com STMicroelectronics Home Email: david.sm...@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: single-sided boards
On Sat, Feb 28, 2009 at 02:21:23PM -0500, Stuart Brorson wrote: How often does the need for single-sided boards arise? The question about single-sided boards is interesting, but the answer depends upon how you intend to fabricate your boards. If you're sending the boards to a PCB manufacturer, then the raw material they use is fiberglass clad with copper on both sides. In this case, it's senseless to ask for a single-sided board to save costs -- they start with a double-sided board in any case. However, some of them do provide a cheaper, single-sided service - even the low-volume panellising companies - for example, www.pcb-pool.com. If they are starting from double-sided stock, then they can save on the production of an artwork - just expose the component side fully (or not at all, depending on whether their photoresist requires a positive or a negative exposure). They can also save on through-hole plating. When I've used their single-sided service before, I just sent them my whole data file (yes, I know, I'm a sinner - I use a commercial PCB design package), and asked them to do just the bottom copper layer. I agree that it tends to trip up newbies. However, there's one Gerber file per (metal) layer, so you can always discard the back side file without any problems. That's what I was going to say :-) Finally, one of the projects slated for work under the Linux Fund's PCB project is to update PCB's handling of layers. Things like the ability to easily deal with single sided boards from inside of PCB are part of the work to be funded by the Linux Fund. I'll just remind everybody that they can make this work happen sooner by making a donation! If I may make a suggestion - solve the layer handling problem which prevents PCB's data files from being taken directly by companies like www.pcb-pool.com. (I think it's something to do with the fact that the file doesn't contain any info to define the meaning of each layer (e.g. top copper, bottom copper, etc.) Gerber is such a vile format; it's time it was consigned to the scrapheap :-) -- David SmithWork Email: dave.sm...@st.com STMicroelectronics Home Email: david.sm...@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: geda-user attachment policy ?, was: Re: Breaking a track into two segments by using a hole
On Thu, Nov 13, 2008 at 08:18:48AM +, Simon Clubley wrote: I couldn't find any clear reference about geda-user's attachment policy either in the introduction email or on the mailing list web page, so I sent these files to Peter privately. Could one of the list's maintainers clarify the policy on attachments, with reference to what types (text/binary) and sizes are acceptable (if any) ? (speaking as a humble user, not a list maintainer...) This list runs on mailman. Mailman has a maximum message size filter, which I believe defaults to 40 kB, unless the list admin decides to change it to something different. I'd suggest that whatever value has been set should be considered to be the limit. (Of course, it's a limit, not a target...) -- David SmithWork Email: [EMAIL PROTECTED] STMicroelectronics Home Email: [EMAIL PROTECTED] Bristol, England GPG Key: 0xF13192F2 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: best ways to do SMT assembly
On Fri, Aug 15, 2008 at 09:43:33AM +0100, Dylan Smith wrote: On Thu, 14 Aug 2008, Robert Butts wrote: I got pcbs back and now want to assemble them. What is the best way, i.e. solder paste to use, heating method, solder bridge removal...? Most of the components are small SMT parts. The through hole parts I'm fine with. It depends what I'm doing. For discrete components (like 0603 sized Rs and Cs), just a fine tip soldering iron and fine solder wire - what I do is melt a small amount of solder on one pad, get the part with the tweezers, re-melt it and stick the end of the part into the molten blob. Then just solder the other end as normal. I can do this quite quickly. This is similar to the technique I use (although I don't go smaller than 0805). However, rather than use tweezers, I prefer to put the component onto the board, and then push it around using my fingernail on the top of the component, about half-way between the two soldering ends. I find that this gives a lot more control than tweezers. Of course, my version needs a bit more planning, as I need to make sure I've let my fingernails grow longer than normal to stop my fingers getting burned ;-) -- David Smith| Tel: +44 (0)1454 462380Home: +44 (0)1454 616963 STMicroelectronics | Fax: +44 (0)1454 462305 Mobile: +44 (0)7932 642724 1000 Aztec West| TINA: 065 2380 GPG Key: 0xF13192F2 Almondsbury| Work Email: [EMAIL PROTECTED] BRISTOL, BS32 4SQ | Home Email: [EMAIL PROTECTED] ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: best ways to do SMT assembly
On Fri, Aug 15, 2008 at 07:12:14PM +1000, andrewm wrote: Try using Blu-Tak instead of either tweezers or finger nails. It is more compliant than either and doesn't hurt when burnt :D You mean to stick them to the board? Seems like a lot more hassle to have to stick the parts down first, rather than just push them into place. -- David Smith| Tel: +44 (0)1454 462380Home: +44 (0)1454 616963 STMicroelectronics | Fax: +44 (0)1454 462305 Mobile: +44 (0)7932 642724 1000 Aztec West| TINA: 065 2380 GPG Key: 0xF13192F2 Almondsbury| Work Email: [EMAIL PROTECTED] BRISTOL, BS32 4SQ | Home Email: [EMAIL PROTECTED] ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Way OT: Architectural CAD programs
On Wed, Jul 02, 2008 at 06:48:17PM -0400, Randall Nortman wrote: I know this really has nothing to do with gEDA, but I figure there's likely some overlap in knowledge. I'm looking for a program to create building plans with -- floor plans and elevations would be the key outputs. Preferrably this would be free, open-source, and run on Linux, and would already have standard floor plan symbols (doors, etc.) built in so I don't have to draw that stuff by hand. I would really prefer a CAD program rather than a vector drawing program if possible -- i.e., I create a model of the building, and it can spit out plans and elevations from that model. I don't need really fancy engineering features like load analysis, though. Anybody have any recommendations? Not sure whether it meets your requirements of free, open-source, and run on Linux, but my boss recently had an extension done on his house, and he was particularly enthusiastic about Google's free 3D design tool (can't remember the name). -- David Smith| Tel: +44 (0)1454 462380Home: +44 (0)1454 616963 STMicroelectronics | Fax: +44 (0)1454 462305 Mobile: +44 (0)7932 642724 1000 Aztec West| TINA: 065 2380 GPG Key: 0xF13192F2 Almondsbury| Work Email: [EMAIL PROTECTED] BRISTOL, BS32 4SQ | Home Email: [EMAIL PROTECTED] ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: [OT] Beer and bicycles (was: Re: youngest user?)
On Thu, Dec 20, 2007 at 10:22:20PM -0800, Steve Meier wrote: I have always claimed, I can go further on a gallon of beer and a bicycle then a gallon of gas and a car. Well, I know for sure that if I drunk a gallon of beer, I'd be lucky to go 100 metres on my bike... -- David Smith| Tel: +44 (0)1454 462380Home: +44 (0)1454 616963 STMicroelectronics | Fax: +44 (0)1454 462305 Mobile: +44 (0)7932 642724 1000 Aztec West| TINA: 065 2380 GPG Key: 0xF13192F2 Almondsbury| Work Email: [EMAIL PROTECTED] BRISTOL, BS32 4SQ | Home Email: [EMAIL PROTECTED] ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: youngest user?
On Thu, Dec 20, 2007 at 11:42:42AM -0500, DJ Delorie wrote: Great, does she know Ohm's law yet? The colors mean numbers. It's like a secret code. You're grey years old! pedant ITYM black grey black years old... /pedant -- David Smith| Tel: +44 (0)1454 462380Home: +44 (0)1454 616963 STMicroelectronics | Fax: +44 (0)1454 462305 Mobile: +44 (0)7932 642724 1000 Aztec West| TINA: 065 2380 GPG Key: 0xF13192F2 Almondsbury| Work Email: [EMAIL PROTECTED] BRISTOL, BS32 4SQ | Home Email: [EMAIL PROTECTED] ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Request for VHDL and Hierarchical Spice References
On Wed, Nov 28, 2007 at 08:17:49AM -0800, Steve Meier wrote: I am seeking good references for verilog, VHDL and spice syntext You want the LRMs. VHDL is IEEE standard 1076; Verilog is IEEE standard 1364. The correct way would be to purchase them from the IEEE. There may be copies (legal or otherwise) available somewhere on the net if you look hard enough. HTH... -- David Smith| Tel: +44 (0)1454 462380Home: +44 (0)1454 616963 STMicroelectronics | Fax: +44 (0)1454 462305 Mobile: +44 (0)7932 642724 1000 Aztec West| TINA: 065 2380 GPG Key: 0xF13192F2 Almondsbury| Work Email: [EMAIL PROTECTED] BRISTOL, BS32 4SQ | Home Email: [EMAIL PROTECTED] ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
