hybridfree/eevblog-posts huggingface dataset:
pcb-rnd, Gentoo overlay (sci-electronics/pcb-rnd) - Page 1
Forum section: electronics / general

author: legacy
author_rank: Super Contributor
timestamp: February 18, 2019, 08:04:17 pm
content: version 2.1.1Elisabeth and I have just created anebuild(rev C), it has been tested on { ppc, hppa }, and it requiresthesetwo patchesbesides, it requires these use flags, in /etc/portage/package.use/edaCode:sci-electronics/gerbv doc examples -static-libs unit-mmsci-electronics/pcb-rnd -cairo gtk motif -opengl xrender gcode gerberThe installed programs will come with two GUIs: gtk and openmotif!If you want opengl hardware support, you need to enable the opengl flag.edit:We (at DTB) are not affiliated with Gentoo, but we are unofficial supporters for non-x86 machines.

author: legacy
author_rank: Super Contributor
timestamp: February 18, 2019, 08:30:18 pm
content: We will try to support future versions of pcb-rnd as soon as released.

author: ScribblesOnNapkins
author_rank: Regular Contributor
timestamp: February 19, 2019, 05:31:06 am
content: Wow. Thank you for doing this!Thanks also from our project leader Igor2.

author: legacy
author_rank: Super Contributor
timestamp: February 19, 2019, 05:16:05 pm
content: we have just enhanced a bit theebuild(rev E) and added auserflagtable.
EasyEDA - How to draw diagonal (or any angle) wire/net on schematic? - Page 1
Forum section: electronics / general

author: dmm2018
author_rank: Contributor
timestamp: February 08, 2019, 08:07:36 am
content: Hello...A figure (see below) in the EasyEDA tutorial (https://easyeda.com/Doc/Tutorial/Doc/EasyEDA_Tutorial_20170920.pdf) shows that diagonal (or any angle) wire/net can be drawn on the schematic. I have gone through the tutorial but could find a way to draw diagonal wire/net. Please share if you know how to draw diagonal wire/net on EasyEDA schematic.Thanks

author: 3dgeo
author_rank: Frequent Contributor
timestamp: February 13, 2019, 01:09:56 pm
content: Hello,I believe (not totally sure) You can't draw angled net lines, but You can move points after you draw net line and make them any angle You want.By the way, EasyEDA has it's own support forum.
SMA antenna - how to "lock" the connector? - Page 1
Forum section: electronics / general

author: Martin F
author_rank: Regular Contributor
timestamp: February 13, 2019, 08:12:29 am
content: Hi all,We have an SMA antenna, where the pigtail/connector is attached to an aluminium end plate:https://imgur.com/a/9thcSGfWe currently experience that the screws fastening the connector easily go loose.Any of you know of a simple solution to this - e.g. some SMA screw locks or similar?Thanks a lot!Martin

author: forrestc
author_rank: Unknown
timestamp: February 13, 2019, 08:19:10 am
content: Quote from: Martin F on February 13, 2019, 08:12:29 amIt's not uncommon for bulkhead RF connectors like this to have a lockwasher of appropriate size. This would be on the nut side of the connector.Seehttps://www.showmecables.com/sma-female-bulkhead-connector-rg174-lmr-100-rg316as an example
pcb-rnd 2.1.1 - Page 1
Forum section: electronics / general

author: ScribblesOnNapkins
author_rank: Regular Contributor
timestamp: February 13, 2019, 05:12:02 am
content: From our mailing list,(we are no longer going to have official email on the geda lists)Hi all,I'm proud to announce pcb-rnd 2.1.1.pcb-rnd home page:http://repo.hu/projects/pcb-rndsource tarballs:http://repo.hu/projects/pcb-rnd/releasesdetailed changelog:http://repo.hu/projects/pcb-rnd/releases/changelog-2.1.1.txtRelease notes for 2.1.1:http://repo.hu/projects/pcb-rnd/releases/relnotes-2.1.1.txtPlease feel free to ask questions or support for designing your board withpcb-rnd, eiter via email or IRC.=== Release notes =======================================pcb-rnd 2.1.1~~~~~~~~~~~~~This release is mainly a cleanup release: rewrite of some essentialinfrastructure (find, drc) and extend the GUI APIs to provide betteruser interface (around DRC and the preferences dialog).Major changes:1. find.c rewrite: smaller, slightly more efficient code with a simpler,more versatile API. Does not mess with global/static object flags.2. DRC API rewrite: the algorithm is decoupled from how violations is storedand from the GUI. There is a generic DRC infra and a generic GUI fordisplaying the results, that can be driven by multiple different DRC algorithms.The old DRC algorithm has been moved out to a plugin.3. DRC GUI rewrite: violations are presented as a tree, grouped by topic, soit is easier to skip or focus on similar errors. The window layout followsthe library layout, with preview and filter. DRC preview colors offendingobjects: thre is a red and a blue group which makes it much easier to seewhat exactly went wrong. Lesstif's interactive 'skip-through' DRC indicationis available as an option on GTK.4. View lists: under the DRC GUI there is a generic "view list" mechanism.It remembers a list of board location (with zoom) and highlight objects. Theuser can remove, add, copy, paste elements of the list. Lists can be saved tofile and loaded later. The same list display is now used to indicateincompatibilities when saving in alien format.5. DAD upgrades: gtk-only dialogs are being rewritten with DAD, more andmore dialogs accessible in all HIDs (including lesstif). Introduced newDAD widgets for this effort.6. The GTK-only preferences window got removed in favor of the new,HID-agnostic preferences window.7. Major HID API cleanup: DAD allows a cleaner separation of feature codeinto self contained plugins; the HID API should be as small as possible,with generic features only. This makes it easier to write new HIDs.Plans for the next release:Going on with the cleanups and similar minor features.--Best regards,Igor2
Proteus 8 properties - Page 1
Forum section: electronics / general

author: BFX
author_rank: Frequent Contributor
timestamp: February 02, 2019, 02:45:46 pm
content: Hi,Do somebody know how to change font size in Proteus 8 schematics Label? (See pic.)Those in right down corner (sorry I don't know exact technical name for this label in english).As you can see at picture if text is long there is a problem with overwrite right section an so.I would like to make text smaller or if its so long in two lines.Thx

author: DerekG
author_rank: Frequent Contributor
timestamp: February 02, 2019, 11:55:46 pm
content: It is a while since I used Proteus but I believe you can make the entire properties box larger to fit in more text.

author: BFX
author_rank: Frequent Contributor
timestamp: February 04, 2019, 12:40:05 am
content: Quote from: DerekG on February 02, 2019, 11:55:46 pmI'm not sure that it is possible to make this box bigger.

author: wraper
author_rank: Unknown
timestamp: February 04, 2019, 12:48:08 am
content: Template->Goto Master Sheet, then right click what you need to edit -> Edit Properties.QuoteYou can create one as you wish.

author: BFX
author_rank: Frequent Contributor
timestamp: February 09, 2019, 11:21:41 pm
content: Quote from: wraper on February 04, 2019, 12:48:08 amThank you so much, it works great!
Hyperlynx ref file - Page 1
Forum section: electronics / general

author: xzswq21
author_rank: Frequent Contributor
timestamp: February 08, 2019, 08:32:07 pm
content: HelloI have exported a file to a Hyperlynx file, I checked the menu in Hyperlynx and I assigned some models to the components as following:now if I open the ref file I see the below codes:but about the last line, U1, I added it by hand, Do u see any problem?on the other hand in Hyperlynx from Setup Menu/option/directoris, I added the spice model's path as following:for example in the path there is a file namedop07.cir
Alternative to M3x8 hex sockets (smaller head)? - Page 1
Forum section: electronics / general

author: Martin F
author_rank: Regular Contributor
timestamp: February 13, 2019, 07:35:03 am
content: Hi all,We're currently using these M3x8 screws for connecting our data logger end plates to the enclosure:https://bit.ly/2E7gf9EWe need something that is still standard/low cost, but with a smaller head (diameter, cone depth).Any suggestions?Thanks,Martin

author: frozenfrogz
author_rank: Frequent Contributor
timestamp: February 13, 2019, 08:36:41 am
content: ISO 7046 counter sunk screws with Phillips recessed drive have a slightly smaller head diameter and head height than your ISO 10642 counter sunk screw with hex drive.Only other option would be to opt for smaller screws, e.g. M2,5 or M2.

author: Martin F
author_rank: Regular Contributor
timestamp: February 13, 2019, 10:04:27 am
content: Thanks a ton, I'll check them out!

author: frozenfrogz
author_rank: Frequent Contributor
timestamp: February 13, 2019, 10:13:41 am
content: You’re welcome.Be aware though, that we are talking marginal differences.I looked it up in a table and it seems I was wrong on the head height.ISO 10642 has a 6mm head with 1,2mm heightISO 7046 has a 5,6mm head with 1,65mm heightAlmost every other counter sunk screw falls into the same category as ISO 7046-> ISO 2009, ISO 15480Could you elaborate on what the actual problem is with your ISO 10642 hex screws? Maybe there are other means to a solution.

author: Martin F
author_rank: Regular Contributor
timestamp: February 13, 2019, 11:43:34 am
content: We're using the screws to fasten two end plates to an extruded aluminium enclosure. We're using 2 screws per endplate.The challenge is two-fold:1) Our end plates are very thin, meaning that the current screws we use go slightly beyond the hole even when screwed in completely2) The current screw head diameter means that the screws almost overlap other holes/extrusions on the end plate due to the enclosure being smallThe current screws almost work - it's a small margin we need. But any alternative suggestions are welcome as well!Martin

author: frozenfrogz
author_rank: Frequent Contributor
timestamp: February 13, 2019, 12:22:53 pm
content: If you want the screw heads to be flush with the end plates, you need to countersink the plates more - and maybe even the holes in the extruded part.Another option might be to useISO 14580 low cylindrical head Torx screws. These are not going to be flush with the end plates, but might leave a cleaner looking part. (head diameter max. 5,32mm, height 2,4mm)
High Speed PCB Design Rules part 1 - Page 1
Forum section: electronics / general

author: BilHerd
author_rank: Newbie
timestamp: February 04, 2019, 08:20:46 pm
content: Hopefully I am not out of line by posting here but we are getting real good response to my post on Hackaday about high speed PCB design rules. In the post and video I talk about how its not really the flow of electrons but rather EM fields, and that right angled corners really don't matter even in the gigahertz range depending on your trace width. I also show how on a "standard" PCB that the impedance can change based on teh direction or interaction with the underlying glass weave.https://hackaday.com/2019/01/24/video-putting-high-speed-pcb-design-to-the-test/Thanks all!Bil Herd (olde Commodore Engineer, current dinosaur at Hackaday)

author: tggzzz
author_rank: Super Contributor
timestamp: February 04, 2019, 09:51:33 pm
content: Quote from: BilHerd on February 04, 2019, 08:20:46 pmOf course you aren't out of line!I don't think anybody on this forum thinks we have a monopoly on "good information" that "must be hoarded" in some way. We'll take information and help from wherever it comes

author: Rerouter
author_rank: Super Contributor
timestamp: February 05, 2019, 12:12:47 pm
content: I should point out you can impedance match via'shttps://www.edn.com/design/components-and-packaging/4330788/Designing-controlled-impedance-vias

author: Gribo
author_rank: Frequent Contributor
timestamp: February 05, 2019, 05:56:54 pm
content: I liked the video. Thanks for the C128
Questions about EasyEDA part selection - Page 1
Forum section: electronics / general

author: Peabody
author_rank: Super Contributor
timestamp: February 05, 2019, 03:19:07 pm
content: I drew my first schematic on EasyEDA yesterday. It will eventually be included in a Github repo as a guide to breadboarding the circuit, but not for designing and ordering a PCB. I found that the only part that I used that's in an EasyEDA library was the Arduino Nano. The 7-Segment displays, rotary encoder, buzzer and SSR I used in the circuit were not found, although equivalents were there, and I used those. But I have all these wrong part numbers on the schematic, and EasyEDA won't let me change them. I understand why they do that (the footprint), but just want to understand what I would have to do to make it look right. Is there any secret way to get it to use a generic icon, or do I have to create virtually every part I use, complete with footprint?One way of dealing with this is to export the schematic and bring it into Paint. But I don't see a way to get high-res image out of EasyEDA. The PNG option yields 1100x851. Is there a way of improving on that? Is there software that converts an SVG file into a BMP image?If EasyEDA isn't a good choice for schematics like this, what would be? In this case, all of the parts are available at Digikey. If they have a schematic drawing program, maybe at least I could get the right parts on the schematic without having to create them. Are there any other options for generic-parts schematics that would let me type in the part numbers?Obviously I'm new to this. Any guidance would be appreciated.
OrCAD Panel Editor - Page 1
Forum section: electronics / general

author: olkipukki
author_rank: Frequent Contributor
timestamp: January 16, 2019, 10:39:15 am
content: Is there somebody used OrCad Panel Editor? Does it include any package or separate product?https://www.orcad.com/resources/library/orcad-panel-editor-overviewAs per above video and compare to Altium Designer, AD looks like a joke for PCB panelisation, imho

author: pgvoorhees
author_rank: Newbie
timestamp: February 03, 2019, 08:16:17 pm
content: In the US, it's a separate product. Most Orcad/Cadence tools tend to have granular licensing.
Request for manual hookup and use- HeathKit CO-1015 Ignition Scope or model #261 - Page 1
Forum section: electronics / general

author: robertweigel
author_rank: Newbie
timestamp: January 31, 2019, 03:04:36 pm
content: HI, please anybody i bought a used heathkit nri # 261 . i don't know about hooking it to my 85 grandprix 350 v8. my coil is built into the disturbiter cap so no place to hookup coil clamp.maybe the manual has what i need? and how to use this machine. thanks.
HackRF Discord - Page 1
Forum section: electronics / general

author: 0day
author_rank: Newbie
timestamp: January 11, 2019, 04:24:41 pm
content: Hello, I am a completely new member to this forum, but I wanted to create a discord for theHackRFwith supported firmwares (Portapack | Portapack Havoc | Jawbreakeretc)-https://discord.gg/dpx89GZ- new invite link, never expires!-Please invite all of your Fr3qz, I'll create moderation / bots when a few people start joining.-Thank you & nice to meet everyone

author: 0day
author_rank: Newbie
timestamp: January 14, 2019, 04:06:07 pm
content: added new invite link above

author: Bicurico
author_rank: Super Contributor
timestamp: January 14, 2019, 04:30:39 pm
content: 1) I don't know what a "discord" is2) I don't like to connect to yet another group/forum/etc., especially without knowing what advantages that brings, considering it costs me a little bit of my privacy3) You have subscribed to this forum just to get people for "your" project - without contributing anything to this forumHackRF is a nice piece of hardware, but unfortunately, in my opinion, the creators did have little to no concerns in fixing their bugs or to listen to feature requests. As it is, the HackRF is basically useless for entry-level Windows programmers (unless you want to develop your own firmware). Even the included hackrf_sweep.exe does not work correctly and nothing has been done in more than a year.To me it means that this platform is almost dead.Regards,Vitor

author: Bud
author_rank: Super Contributor
timestamp: January 14, 2019, 04:53:09 pm
content: QuoteYou are what, 13 years old?Getting yourself a thumb up straight in the first post is a bit rich, dont you think.

author: 0day
author_rank: Newbie
timestamp: January 14, 2019, 05:31:39 pm
content: Alright, just trying to contribute to the community by creating an outlet for a specific device (that has many bugs / errors). Seems like I'm in the wrong spot!

author: 0day
author_rank: Newbie
timestamp: January 14, 2019, 05:33:19 pm
content: Quote from: Bicurico on January 14, 2019, 04:30:39 pmYou're absolutely right, that's the only reason I joined this forum!

author: GlowingGhoul
author_rank: Regular Contributor
timestamp: January 29, 2019, 08:51:08 pm
content: Quote from: Bud on January 14, 2019, 04:53:09 pmOh look, the forum police are here. Good job, so brave.

author: Bud
author_rank: Super Contributor
timestamp: January 30, 2019, 05:32:11 pm
content: You are welcome. Want to be taken seriously - choose proper communication style.
Eagle - Page 1
Forum section: electronics / general

author: Zbych
author_rank: Newbie
timestamp: November 29, 2018, 06:32:45 pm
content: HiWhere can I find the latest Eagle for Linux Mint

author: Aztlanpz
author_rank: Regular Contributor
timestamp: November 29, 2018, 08:28:29 pm
content: www.AutoDesk.com

author: Zbych
author_rank: Newbie
timestamp: November 30, 2018, 09:35:01 am
content: Hi thank you

author: Doctorandus_P
author_rank: Super Contributor
timestamp: January 24, 2019, 03:01:12 am
content: Compare that with "sudo apt install kicad".

author: Warhawk
author_rank: Frequent Contributor
timestamp: January 27, 2019, 10:31:40 am
content: lol, but
PCB Hacksaw job by Lenovo/IBM on the PCI-E x16 connector #Weird  - Page 1
Forum section: electronics / general

author: GrandTheftAuto4life
author_rank: Contributor
timestamp: November 24, 2018, 05:51:05 am
content: Yeah..I stumbled over this oddball i/o card on ebay.Oh and check out those dancing capacitorsAdditional info:* "uses the on-board (integrated) Intel video subsystem allowing users to attach a second monitor to their small form factor, desktop, or tower system"* "adapter is not a graphics adapter with a graphics chip or graphics memory"https://support.lenovo.com/se/en/solutions/migr-68906https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=+39J9334&_sacat=0Has anyone seen anything like this before?

author: vealmike
author_rank: Regular Contributor
timestamp: January 14, 2019, 02:27:46 pm
content: Weird.OK, The PDIe Add in connector has power, JTAG, I2C and PRESENT#1 to the left of the keyway.To the right of the keyway, there are lanes 0-3 then the PRESENT #2 signal. Then lanes 4-7 with another PRESENT#2.Finally for the *16 connector, we have lanes 8 to 15 and after them PRESENT#2 again.The idea is that you short PRESENT#1 to PRESENT#2 on your add in card and the host uses this to determine the size of the card in the slot.The other thing you need to know is that (Optionally IIRC) PCIe buses are reversible. If lane 0 doesn't come up then the root complex may use lane 15 as lane 0, lane 14 as lane 1 etc.Looking at that card, this is exactly what Lenovo have done. You can see the diff pairs going between the chip and lanes 15 to 12 on the edge connector.They've gold fingers where they need them to short out all the PRES#2 signals.Where there is no signal running across the connector, they have completely removed the edge conn.Your guess as to why they did that is as good as mine. Save on gold / reduce insertion force / remove capacitive stub from unused high speed lines. 'Tis very odd.

author: Doctorandus_P
author_rank: Super Contributor
timestamp: January 24, 2019, 02:06:59 am
content: There is nothing strange about those capacitors.They are spaced deliberately above the PCB.Electrolytic capacitors do not like heat, and soldering is pretty hot.By making the leads a bit longer and spacing the capacitors they receive significantly less heat during soldering, and this improves long term reliability.The fact that they use through hole capacitors which are harder to place than SMD (Drilling all those holes in the PCB, possibly bent legs during insertion, wave soldering instead of reflow) could already be an indication that lenovo wants to design a reliable product here. THT elco's are generally of higher quality than SMD ones, but a good SMD cap is of couse still a lot better than a bad THT cap.Electrolytic capacitors are also the most unreliable electronic components, except maybe for connectors which face the harsh outside world and mechanical stress from insertions.
Double Sided MCPCB with plated through vias? - Page 1
Forum section: electronics / general

author: ocset
author_rank: Super Contributor
timestamp: January 14, 2019, 08:40:36 pm
content: HiWe wish to make a 6W Buckboost switch mode lighting PCB (15cm by 1.8cm) with LEDs one side and the driver electronics the other side. (everything SMD) There will also be a microcontroller to give dimming control.We want the PCB to be as thin as possible, but not so thin it bends easily.We believe that we can have two pieces of MCPCB which sandwich a plastic core. We will need plated through vias for the tracking of the driver & control electronics. We believe that plated through vias can be achieved with this setup, and can be done by simply drilling though both pieces of MCPCB where the vias occur, and then drilling through the plastic core in the same position…then plating the hole of the plastic core.Do you believe that this is possible?How expensive would you think this would be?Vin = 20 – 50VV(LEDs) = 45V

author: Giaime
author_rank: Regular Contributor
timestamp: January 18, 2019, 05:03:31 pm
content: There exists dual side MCPCB, but you cannot do vias between the two layers.My proposal would be to use 2 PCB.Top MCPCB with LEDsBottom MCPCB with electronicsboth on the same production panelconnected together with SMT jumpers likehttps://sumida-flexcon.com/hp3293/PANTA-SMD.htmduring assembly you de-panelize, bend the SMT jumper and close the assembly with some glue.
Matte Green Soldermask? - Page 1
Forum section: electronics / general

author: Elk-ECE56
author_rank: Contributor
timestamp: January 18, 2019, 04:40:40 pm
content: Anybody know where I could find some Matte green solder mask that cures with UV? I've seen images on google, and pcbs like on flukes meters. But I can't find any anywhere. Thank you
Altium Designer: Why my polygon to via clearance rules ignored? - Page 1
Forum section: electronics / general

author: javad2040
author_rank: Contributor
timestamp: January 08, 2019, 07:35:42 am
content: hello guys.I design the Data Acquisition system board that has ZYNQ FPGA, two AD9643 ADC, two DDR3, LAN 1Gb, PCI-e v2.0 and power components.I use Altium Designer 18 EDA for designing the board and all high frequency rules (such as: length match, PCB stack up, trace width , ...) has considered and applied.The characteristic of board is:#layer : 12thickness : 66.4 mil (1.68 mm)Min. Line/Track Width: 3.543 milMin. Line/Track Space: 3.937 milMin. Finished Diameter of PTH Hole: 0.2 mmI define some Rules to check the space, width, length match of traces that are high frequency, and define the Rules to pour the Power and GND polygons.The clearance of poly to poly in inner and outer(top and bottom) layers is 15 and 10 mil respectively; also i define Rules for poly to via clearance that in BGA components are 4 mil and others are 10 mil.when the Rules applied all via catch the 4 mil for clearance . I change the priority rules but this problem is exist.How to define correct clearance rules (poly to via) to pour the polygons according to special(my) style?Please help me to solve this problem.regards,

author: r0d3z1
author_rank: Regular Contributor
timestamp: January 08, 2019, 01:01:09 pm
content: are you sure that 4mil is the real distance ? try to measure it on the gerber. I am not sure if you know that the gray area of vias pad is the area of top/bottom pad but you don't have it on the inner layer if the it is disconnected.Otherwise, it looks like a priority problem, than right click on the vias, and use the "applicable binary rules" tool to debug the rules problem.

author: BrianHG
author_rank: Super Contributor
timestamp: January 08, 2019, 01:28:21 pm
content: Is it possible you have a feature similar to 'Optimizing Annular Rings of Vias in Inner Layers' for that via?Switch to single layer view and cycle to the offending fill layer to see if the via is actually smaller on that layer.Here is a explanation of how this looks and is usually automatically done when using true power planes:https://www.eevblog.com/forum/eda/you-get-more-copper-between-padsvias-using-a-true-power-plane-instead-polyfill/msg1524124/#msg1524124

author: free_electron
author_rank: Super Contributor
timestamp: January 08, 2019, 05:42:41 pm
content: share your ruleset.

author: javad2040
author_rank: Contributor
timestamp: January 13, 2019, 08:06:45 am
content: Thank you for reply,my problem solved :I use Room and define rules for it. The FPGA and DDR3 via has the 4mil clearance anad others 15mil.best regards.
IEEE symbols - Page 1
Forum section: electronics / general

author: JtroTechAB
author_rank: Contributor
timestamp: January 12, 2019, 07:22:00 am
content: Hello,Is there any source from where I can get IEEE standard symbols for various components?

author: nctnico
author_rank: Super Contributor
timestamp: January 12, 2019, 02:27:16 pm
content: These should be part of the CAD package you are using. However for logic chips beyond single gates the IEEE symbols have been a massive failure. Nobody is using these.

author: DerekG
author_rank: Frequent Contributor
timestamp: January 13, 2019, 02:21:21 am
content: Quote from: nctnico on January 12, 2019, 02:27:16 pmYes, this is pretty much correct. Just work off the datasheet recommendation by the component manufacturer & the footprint should work just fine. With SMD electro caps & inductors (for example) you might wish to extend the footprint to just outside the component extends to ensure the part can be easily replaced with a rework iron if required.
Digikey footprints - Page 1
Forum section: electronics / general

author: Karel
author_rank: Super Contributor
timestamp: January 10, 2019, 09:31:10 am
content: Interesting development here:https://www.digikey.com/en/resources/design-tools/kicad

author: Whales
author_rank: Super Contributor
timestamp: January 10, 2019, 10:22:05 am
content: QuoteSounds like they expect it to help them earn money and market share. Rising competition from Arrow?

author: LapTop006
author_rank: Unknown
timestamp: January 10, 2019, 01:14:38 pm
content: Came out quite a while ago (roughly a year?), sadly they don't offer a way for me to add a line item to my order which is "give me footprint & symbol for this part", I know there's services which do, but I'm already buying from Digikey anyway.The library github page is:https://github.com/digikey/digikey-kicad-library/
Altium Designer Vs Orcad Pro Vs PADS Licencing structure and Costings - Page 1
Forum section: electronics / general

author: madhu.wesly01
author_rank: Regular Contributor
timestamp: January 08, 2019, 06:37:23 am
content: Hi all,Good day!Currently, I am using KiCAD tool, and it worked very fine till now. Now I want to move to an Industry standard tool which saves much time and improves productivity - with features(I am expecting) Collaborative PCB design, ECAD-MCAD, Rigid-Flex design, Powerful Automatic routing, Active BOM management, Version control, RF design & Circuit Simulation.My Query is: Please, suggest me which one will be the best option for a start-up(1 to 3 Designers) to work with collaboration?? I would be better if I can get clarity on Licencing structure and Costings for each of them. And also let me know If I am missing any other Better tool which can solve my purpose??Thanks in advance.

author: free_electron
author_rank: Super Contributor
timestamp: January 08, 2019, 05:46:54 pm
content: describe 'collaboration' ....if you want to do multiple people SIMULTANEOUSLY in same file you need a vault.Altium Nexus plus a vault installation on Firebird.everything becomes managed

author: Gribo
author_rank: Frequent Contributor
timestamp: January 08, 2019, 06:32:41 pm
content: You just copied the Altium marketing feature list. Are you sure you need all these things? Some packages have a per module cost.

author: madhu.wesly01
author_rank: Regular Contributor
timestamp: January 09, 2019, 05:47:07 am
content: @free_electronThanks for the reply.My understanding on Altium Nexus is, it is a successor to Vault(Data base) which brings few advanced features to Altium designer. Please correct me if I am wrong, I am new to Altium.Do I need to pay for installing Altium Nexus plus??I even have doubt that the Altium nexus is a tool like altium designer with collaboration feature. If it is the case, is it possible for switching between Altium designer and Altium Nexus on requirement basis without paying extra.Ref Link:https://www.altium.com/documentation/18.0/display/ADES/NEXUS+-+FAQs#ADANThanks in advance.

author: madhu.wesly01
author_rank: Regular Contributor
timestamp: January 09, 2019, 06:08:56 am
content: @Gribo,Thanks for the reply.All the features mentioned in the previous thread are given in a document named "CS v AD Feature Comparison - Final". Won't I get access to all the features if I buy the Altium Designer 18/19??Regards,Madhuwesly.

author: MasterBuilder
author_rank: Regular Contributor
timestamp: January 09, 2019, 06:53:14 am
content: Altium Nexus is a separate purchase, it costs 2500 plus 495 GBP per user.

author: tszaboo
author_rank: Super Contributor
timestamp: January 09, 2019, 08:26:35 am
content: You are aware, that different countries have different license fees, so it is not the best to ask about costs on an international forum like this? Look up the local distributor, and ask for a price. You can even haggle.

author: madhu.wesly01
author_rank: Regular Contributor
timestamp: January 09, 2019, 09:21:22 am
content: Thanks for the clarificationsWill contact Local distributor.Regards,Madhuwesly.
Excellon Drill Holes Not lining up with Copper Layers - Stumped! - Page 1
Forum section: electronics / general

author: Chris56000
author_rank: Frequent Contributor
timestamp: December 19, 2018, 08:52:35 pm
content: Hi!I'm trying to make this experimental Z80 PCB on a CNC machine for my friend, but the Excellon *.drl file doesn't come aligned with the copper plots - the drill layer is about four times the size of the copper layers and way off the board!I get the same result when I view the Gerbers in FlatCam and the open-source gerbv tool!Can someone explain to me what's going wrong please?This design isn't in any way confidential - here are the files to look at please!Chris Williams

author: radioactive
author_rank: Regular Contributor
timestamp: December 20, 2018, 06:20:16 am
content: See if you can find an option to output Excellon "24" format.

author: Psi
author_rank: Super Contributor
timestamp: December 20, 2018, 07:25:48 am
content: I've seen this sort of thing before where NCDrill files don't align to pcbs gerbers.It was due to software making assumptions about what the units are.From memory the file format said inches but the software ignored this and treated it as mm.
zSFP power supply requirements - Page 1
Forum section: electronics / general

author: UStralian
author_rank: Newbie
timestamp: December 18, 2018, 09:52:02 pm
content: I'm designing a board with a couple of zSFP connectors on it. I don't know what modules the end user will be plugging in to it, but I want to support as broad a range of performance as I can, within reason. They'll only be fiber, not copper modules. I need to decide how much power to give the ports. I can't find any good design guidelines for zSFP in general, only loose anecdotal evidence. I'm using a reference design that feeds them from a fat rail with 5A inductors, and I've spoken to another engineer who has used QSFP modules that pull 2A. All I can find are modules that pull <300mA, and the connectors themselves appear to be rated up to 500mA/pin. Is there a good reference somewhere for how to design SFP interfaces without way overdoing the power supply? Or at least explain the discrepancies I'm seeing in power budgets?
Capacitor usage - Page 1
Forum section: electronics / general

author: aliedot
author_rank: Newbie
timestamp: December 10, 2018, 03:05:16 pm
content: Hello,I have to redesign a chip with different technology.What is the difference between polylisilicone 1 - polysilicone 2 capacitor vs polysilicon over diffusion capacitor?Can I use polysilicon over diffusion capacitor(CPOD) instead of polysilicone-polysilicone cap(CPP)?Thanks!
DesignSpark PCB - Need help with a couple questions... - Page 1
Forum section: electronics / general

author: biminiroad
author_rank: Newbie
timestamp: July 19, 2017, 03:23:06 pm
content: Hello!I have some random questions about DS PCB that hopefully people here can answer. I've searched on both this forum and Google and can't find anything. If you have links to forum posts here or elsewhere or manual pages than answer these questions, I'm more than happy to read those too! No need to repeat yourself if it's been answered elsewhere.1. How do you turn off airwires/ratsnests? Just want to disable them and manually route without having to look at the jumbled mess of lines going everywhere.2. How do you pack a project up (including a custom library) to email to someone?That's it for now, thanks!

author: Chris56000
author_rank: Frequent Contributor
timestamp: November 26, 2018, 04:15:22 am
content: Hi!I haven't found a setting to disable the "rats–nest" display yet, but if you want to email a project, you need a zip–file containing the *.sch, *.pcb, Gerbers if you created them, and the *.ssl, *.psl and the *.cml files associated with the components you made, they're usually in the "Users" Library Folders together with the design files!Also, if you run the "Manufacturing Outputs" to create gerber files, the holes don't always show in gerber-viewers unless you include the *.mop file!*.sch – DS Schematic Design, ".pcb – DS PCB Design, *.ssl – DS Schematic Symbol file, *.psl – DS PCB Symbol Footprint, *.cml – DS Component Model FileChris Williams
De-Panel Gerber - Page 1
Forum section: electronics / general

author: fossil
author_rank: Contributor
timestamp: January 20, 2019, 01:17:25 pm
content: I have a set of 9 PCB's in single panel (gerber). I don't need all the PCB's in the panel.Is there a tool which can help me to separate a PCB from this panel?

author: Kasper
author_rank: Frequent Contributor
timestamp: January 21, 2019, 07:02:06 am
content: You might be able to import gerbers to KiCad pcb design file, delete what you don't want then make new gerbers.I tried that the other day and the two copper layers did not import properly, luckily the outline did and that was all I wanted to edit anyways.I might have been doing something wrong, I am not too familiar with KiCad.

author: fossil
author_rank: Contributor
timestamp: January 21, 2019, 08:58:35 am
content: Quote from: Kasper on January 21, 2019, 07:02:06 am"gerbv" allows one to remove elements in gerber. I could do almost everything. I got stuck at soldermask in bottom layer. One can delete elements, but, there is no crop option. Unfortunately, the solder mask is one single polygon.
Protel DOS Utilities Darkroom Timer and Files from Bob Barnes (RCS Radio) - Page 1
Forum section: electronics / general

author: scopeman
author_rank: Frequent Contributor
timestamp: November 25, 2018, 04:49:36 am
content: Does anyone have a copy of the files that were on the CD that RCS Radio aka Bob Barnes created some years ago for Protel Autotrax DOS?Also does anyone have the files for the Darkroom Timer project once featured on his site?I found references to this on a wayback machine link but obviously no files.I thought perhaps someone in Oz might have stashed it away.Thanks,SamW3OHM
Autocad - Page 1
Forum section: electronics / general

author: Aztlanpz
author_rank: Regular Contributor
timestamp: November 23, 2018, 06:52:45 pm
content: Does anyone know winch version of Autocad is the most stably from 2016, 218 or 2019?Thanks

author: GrandTheftAuto4life
author_rank: Contributor
timestamp: November 24, 2018, 05:27:45 am
content: 2018 seems to be slightly better than 2016. But that's only in regards to some export functions, overall, nothing seems to have changed much.
First 4-Layer Board + Layout advice please ( possible gnd loop solution ?) - Page 1
Forum section: electronics / general

author: Sultanpepper123
author_rank: Regular Contributor
timestamp: October 15, 2018, 05:28:44 pm
content: This is my first 4 Layer layout. I've done many 2 layer boards in the past, but to be honest, I've been doing boards without taking special care when working with mixed signals ( Analog, digital and high current traces ) probably due to designs were less complex so I usually got away with it. But now I'm more cautious and in need of help in guidance with this design. I've searched a bit and some people talked about segregating analogue, digital planes and power planes, I did that with the analogue and digital circuits but the high current parts of the board I need advice on how to properly do it in terms of grounding and whether I need to cut a plane for it , or should i do something else better . any other advice ( layout, design,...etc) is very appreciated.Below are the 4 layers of the designs ,Top LayerGround Layer,notice analog ground plane , what do think of the analog ground part? is it acceptable ?Supply LayerBottom Layer,notice analog ground plane , again what do think of the analog ground part? is it acceptable ?High Current Section (12V 9A Max)high current part of the board should i do anything ( ground cuts , components placement,....etc ) to avoid any problemsNow I've been told that i have a grounding problem without any elaboration or any chance to discuss, so i was left confused before showcasing my problem in the first place.Ideas on my mind:Do i remove the ground pour on both signal layers since they are crossed over alot and not solid and keep the inner gnd plane layer ( Agnd and Dgnd seprated as in photo) no ?Do i keep the ground plane pours on the outer signal layers , but near the power input / board i/o connector cut entirely horizontally to force any ground return to go through the GND plane inner layer (2nd) keeping in mind that in this case i'll keep the Agnd and Dgnd separated as in the pictures.Same as point no.2 but not separate the gnd planes in all gnd planes .Of course i'm open to any advice and/or criticism . Please feel free if you need any further information.Thanks in advance

author: JustMeHere
author_rank: Frequent Contributor
timestamp: November 22, 2018, 09:27:09 am
content: You might not want to break up your ground plane (or power plane for that matter.) See Chapter 5 in High Speed Digital Design: A Handbook of Black Magic (Johnson)
Couple questions on standard design practice. - Page 1
Forum section: electronics / general

author: Dan Moos
author_rank: Frequent Contributor
timestamp: November 21, 2018, 05:37:07 pm
content: I'm doing a project that is mostly standard pdip style components. My first question is, what trace size/spacing is standard for such a thing? It will be 4 layers, with the internal layers being ground and Vcc. No real size limitation on board dimensions, but obviously the more compact the better.Next, drill sizes. Are they part of the footprint in me EDA (KICAD)? Is there a resource out there with suggested drill sizes for various common parts? Honestly, the drill sizes are the thing I'm most paranoid about messing up. My project is a VGA controller done with all 7400 logic, so my board size is almost certainly too big for the super cheap deal most places offer. That and it being 4 layers.I'm fine with a couple failed attempts, but wanna play to win!

author: Bassman59
author_rank: Super Contributor
timestamp: November 21, 2018, 06:07:13 pm
content: Quote from: Dan Moos on November 21, 2018, 05:37:07 pmMinimum track width and space has always been based on what your PCB fab house can do and at what cost. If you're using DIP then it's likely you aren't trying to squeeze a bunch of traces in tiny areas. 15 mil traces are probably fine. Whatever works, really.QuoteThe drill sizes are baked into the footprints. If you're using the standard Kicad 5.0 libraries, the sizes for the pin holes are correct. I honestly haven't seen a fab house publish a list of their standard drill sizes in ages.

author: Siwastaja
author_rank: Super Contributor
timestamp: November 22, 2018, 09:18:03 am
content: Drill sizes are always in your IC datasheet, there is the recommended footprint. If not, it's a separate document from the same manufacturer.Always double-check with the actual datasheet for the actual part you are using; don't assume a similar part has the same measurements (even though a DIP ICshouldbe a fairly reliable standard). Never trust a library footprint coming with the EDA tool, or downloaded from the 'net. They are wrong more often than they are correct, which may sound insane, but that's the way it is.
Mentor HyperLynx Alternatives? - Page 1
Forum section: electronics / general

author: TheAdmiralty
author_rank: Contributor
timestamp: January 01, 2019, 05:52:48 pm
content: Afternoon! Looking for opinions. I do PCB design work for a defense contractor where we use Mentor Graphics' software packages... Xpedition/xPCB, HyperLynx VX, and the works.Primary question, is there any open-source/inexpensive (ie not $10K+) software that an individual could get their hands on for board-level signal and power integrity analysis to the order of HyperLynx? I know most CAD suites can give you netlist that can be simulated with IBIS/Spice models, but I'm referring to things like crosstalk sims of the routed board, or impedance calculation of a decoupling network, or DC drop simulation. Things like that.Second, I've worked with Altium Designer 17 and am kicking myself for not taking it when they offered me a perpetual license for $1,200 after a student license expired a while back, and so now I'm 'stuck' with DipTrace. I love DipTrace, have paid for the full unlocked version over the years, and think it's easily the best of the entry-level PWB CAD programs - but it just isn't suited for high-speed where signal/power integrity become an issue. I'm tempted to call up Altium's rep again and see if I can talk them back into that offer, but does Altium Designer 18 have anything that would even help me out here?Thoughts welcome!

author: asmi
author_rank: Super Contributor
timestamp: January 02, 2019, 04:45:00 pm
content: Cadence recently added impedance and coupling analysis into Orcad PCB Editor Professional edition - I've described some of the changeshere. I was able to purchase a license for Capture + PCB Editor Professional bundle for only $1800 (this is the price of their 1 year maintenance subscription, the actual license was free, so 5K$ discount) by telling to a sales rep that I'm just an "advanced hobbyist" and so would never afford the full price. So you might want to try the same thing, just make it very clear that you need it for a hobby use. Even though the actual license I got doesn't have any restrictions for a commercial use.So far all my hi-speed routing worked on a first try, so these sims (there is also SigXplorer to simulate a single trace - both pre-route and post-route) are definitely useful and worth the money. Infact I recently extended my maintenance subscription for another year, as updates I received over the first year were totally worth the price. And it was super-reliable for me as well - I never had any crashes, data corruptions or any other technical issues over time I'm using the software.
Cheap EDA Bundle? - Page 1
Forum section: electronics / general

author: Chris56000
author_rank: Frequent Contributor
timestamp: November 12, 2018, 09:16:00 pm
content: Hi!This bundle seems to be offered in various sizes and prices:–http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=232654276312&category=41859&pm=1&ds=0&t=1542055310205&cspheader=1Any good or is just a collection of free/open–source ware you can collect together yourself? Anyone used it?Chris Williams

author: SiliconWizard
author_rank: Super Contributor
timestamp: November 12, 2018, 09:40:42 pm
content: Yes this is only a collection of open source software, barely renamed.Qucs, TInyCAD, KiCad, FidoCadJ and others... you can easily find all of those online.

author: bd139
author_rank: Super Contributor
timestamp: November 13, 2018, 12:00:03 am
content: This is the underpants gnomes thing again.1. Collect XXX2. ?3. Profit!XXX = open source software? = sell on ebay at silly markup and wait for a dumbass to come along.Viable business model actually. Why didn't I think of it.

author: ataradov
author_rank: Super Contributor
timestamp: November 13, 2018, 12:29:21 am
content: But who would realistically buy that? Who buys CADs without trial period?

author: CatalinaWOW
author_rank: Super Contributor
timestamp: November 13, 2018, 12:37:15 am
content: The link didn't list a price, but if it wasn't too much this might actually make sense. For a couple of reasons. First, there are many of us with limited internet bandwidth. A DVD worth of software could be worth a fair amount. Second, and don't know if this applies to this package, but various flavors and types of freeware often doesn't play well together. If they have assembled cooperative pieces and/or knocked the rough edges off it could be worth paying for it. That is what most distros of Linux do and many of them charge some nominal fee for a DVD.Also if the price is low enough you don't really care about an evaluation copy. Your time doing the evaluation is pretty valuable too, and adding a few bucks to that doesn't change the investment much.

author: Chris56000
author_rank: Frequent Contributor
timestamp: November 13, 2018, 03:14:09 am
content: Hi;The item I linked to in the first post of this thread is offered for sale about £18 with free postage!I'm fairly sure I saw at least one or more of the screenshots shown in QUCS in the advert that used to be on Quasar Electronics's Website for the complete package (£115!) they once offered but I can't find any pics at the momentt!Chris Williams

author: chrisl
author_rank: Regular Contributor
timestamp: November 13, 2018, 06:49:17 am
content: It does look like a viable business model actually... someone is making $.https://www.ebay.com/sch/i.html?_from=R40&_nkw=Collection+-+CAD+PCB+Electronic+Electrical+Printed+Circuit+Board+Design+Software&_sacat=0&rt=nc&LH_Sold=1&LH_Complete=1

author: ataradov
author_rank: Super Contributor
timestamp: November 13, 2018, 06:55:48 am
content: Yes, it looks like eBay user mtsoftwaresolutions has 4300 items for sale, all of which are bundles or individual copies of open source software.
Quasar Electronic's EDA Bundle? - Page 1
Forum section: electronics / general

author: Chris56000
author_rank: Frequent Contributor
timestamp: November 15, 2018, 12:41:07 am
content: Hi!About a week or two ago I was asking about an EDA Software Package available in various veraions from the British retailer Quasar Electronics that advertises in EPE Magazine!There appeared to be VisualSpice, VisualEDA and VisualProEDA, apparently published by IslandLogix LLC. etc. advertised in E.P.E. mag and on their website, but it disappeared about 2004/2005.I'm interested in the VisualEDA "Pro" version of this tool, which Quasar offered at typically £115 for the "Fully Loaded!" version!Does anyone know what happened to Visual Logix's products and can you get them anywhere?Chris Williams