Open Circuits:Community Portal
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Welcome to Open Circuits. This is a good place to talk about Open Circuits, as a whole.
Recommended :DIY-dimmer for today's skilled hands Do you want to build DIY-dimmer, but there is no desire / opportunity to mess with self-etching printed circuit boards? Complain about a cat you will learn how to "do" the same beautiful dress. Ready ZIP-file order on Chinese production is waiting for you inside. Supplier Selection
Talk about the ordering process
How to order different for different suppliers. Of the two tested us more personally liked the ordering process in HQEW. introduce the order parameters (using all the default options, enter only the size of the board: 4 x 4.5 cm, the number of 10 pieces), click the «Calculate», see the price of $ 10.62 per production and $ 47.45 for shipping via DHL. A little expensive? Click on the down arrow next to DHL, choose from the list Russian Federation and switch the delivery to Sweden Post for $ 5.15. In the next step, enter the address of delivery, load the ZIP-file with gerberas and ... ... And we notice that our order had gone in the audit department to check the suitability of our files for production. Will have to pay later, after a successful audit. It's great pleases. The world is full of stories, as Russian companies were sent to the production board without checking the sources, there is not drilled holes, mirror side boards and so on. How to audit, and the following production run fast enough, that's the beginning of a time log of our order: article recommended:http://habrahabr.ru/company/coolrf/blog/200666/
We have 642 articles now. Yay!
==This is Ann from Huaqiang Group (Stock Code:000062) which specializes in PCB prototype, fabrication and assembly service with our powerful factory and professional engineers. More details, you are welcomed to visit our website:  Huaqiang PCB offers online“Price Calculator” for you having a rough idea on the cost of your PCB project quickly. Should you need any PCB Service, please feel free to contact me. My email is email@example.com Any further question or suggestion, it’s so appreciated to let me know. online store
 Printed circuit board milling (also: isolation milling) is the process of removing areas of copper from a sheet of printed circuit board material to recreate the pads, signal traces and structures according to patterns from a digital circuit board plan known as a layout file.more in PCB http://pcb.hqew.net/?s=544864 Similar to the more common and well known chemical PCB etch process, the PCB Prototyping milling process is subtractive: material is removed to create the electrical isolation and ground planes required. However, unlike the chemical etch process, PCB milling is typically a non-chemical process and as such it can be completed in a typical office or lab environment without exposure to hazardous chemicals. High quality circuit boards can be produced using either process. In the case of PCB milling, the quality of a circuit board is chiefly determined by the system’s true, or weighted, milling accuracy and control as well as the condition (sharpness, temper) of the milling bits and their respective feed/rotational speeds. By contrast, in the chemical etch process, the quality of a circuit board depends on the accuracy and/or quality of the photomasking and the state of the etching chemicals.
What we need just PCB PROTOTYPE
 Testability Introduction Of PCB Board Assembly
printed circuit board assembly test refers to the PCB after installation components for the electrical and physical tests. Affect board assembly testing difficulties, its detection method than PCB bare board testing much more complex. pair assembly testability design should include system testability issues . system testability feature requests should be submitted to the whole overall design concept for review. printed board assembly testability must be designed integration, testing and maintenance of the integrity of the compatible .
Professional PCB manufacturer 
PCB assembly design for testability before the start should be the same printed circuit board manufacturing, installation , and testing and other technical staff for review . Ensure testability results. The review shall involve visual level circuit pattern , the installation density , test methods of operation, testing division of the region , special testing requirements and test norms printed circuit board.
PCB assembly level test There are two main types, one is to have the assembly of electrical function independent functional testing , the assembly is applied to the input of a predetermined excitation signal by monitoring the output terminal to confirm the results of the design PCB and installation correct another test is detected optically and assembly line testing , optical testing no explicit constraints on the design , as long as there is a certain degree of visibility printed circuit board and hold circuit can be detected , the method is mainly check the installation and welding quality online test limits for PCB test points shall be designed primarily in the coordinate grid test needle bed with matching place and can weld surface test , if the test with flying , then we must ensure that the test point at the coordinate grid on printed circuit board, but also in the layout can maintain sufficient space probes ( flying ) hit the contact points to be tested , flying tests on both sides of the board , the main test assembly and welding quality and processing component damage.
Commonly used test methods manual testing and automated test equipment PCB. Artificial test multimeter, digital voltmeter, insulation resistance tester, and other equipment for testing , low efficiency, records and data processing complex, and subject to the restrictions packing density , miniaturization of high density printed circuit board assembly is difficult to rely on manual testing. automated detection equipment with high precision , good reliability, repeatability, high efficiency and some instrument also has an automatic judgment , record, display and automatic fault analysis.
Automated testing techniques are commonly used automated optical inspection (AOD), Automated X-ray measurement blocks (AX I), online testing (ICT) and functional testing , etc. In the PCB should be considered when designing printed circuit board assembly test compatibility resistance, if the test method is not considered necessary tests and rules even when the electrical machine with good testability circuit on the printed board assembly is relatively difficult to test , such as a test point location , size, and pitch of the test point with test probe or needle bed matching problem. online testing electrical conditions set problems and prevent damage to the test on the components  PCB, etc. are to be considered and testability problems.
--RenatoFontes 00:54, 11 February 2011 (UTC)
Yes. the components for a smartphone board are really small so no one has figured out how to build one. My suggestion? Make one with a beagleboard or raspberry pi as a mainboard instead. Both boards are small and low voltage and linux which would be a great smartphone base. that is your best bet, btw it requires moderate electronics know how to rig up a touchscreen. You should get started familiarizing yourself with whatever electronics knowledge that you can find too.
Yes. The components for a smartphone board are really small, but lots of people have figured out how to build one -- see Open Mobile Gadgets for a list.
In particular, the Tux phone   and the more polished-looking Openmoko FreeRunner   have open hardware and open software. Filme Online Schauen, Film Sehen, Filme Gratis It's possible to build a small computer running Linux "from scratch" -- see motherboards that run Linux for some people who have done just that. Perhaps you can use one of those smartphone hardware or other motherboard hardware as-is? Or perhaps with a few blue-wires? Or perhaps you could at least download the schematics and tweak the design for your new PCBs, rather than starting entirely from scratch? --DavidCary 16:00, 16 July 2012 (UTC)
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This is pcb circuit board .http://www.aliexpress.com/store/233890# It has been as the exhibits, is the face of the shop I usually send the drawings to their factory, and then it will give me the production samples (pcb protype), and the price is very affordable, it is useful for our common electronic engineer like us .http://www.aliexpress.com/store/432347
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A best price PCB manufacture,can produce small amount pcb boards.electronic engineers'new choice, if you do not believe that ,you can try it. http://www.aliexpress.com/store/432347 TIPS: DO NOT believe that low price product,before you in choosing a manufacturer must be careful,Refuse to cheat
Yahoo claims they have 1,831 electrical engineering mailing lists. What would be a good way of letting the people on those lists know about the Open Circuits wiki, without spamming them? --DavidCary 13:30, 31 May 2006 (PDT)
- Publish cold fusion howto :-)
- Send one email/week and only once per list. And be on topic, listen carefully for responses.
Freqmax 16:24, 30 July 2007 (PDT)
Rework mobile identification methods:
The outer packing and the instruction for use Regular phone beautifully printed packaging and specification, more for coated paper printing, fonts and images are very clear, rich administrative levels sense, has a much simpler and counterfeit packaging single-sided paper copy, fonts and images are very dry, rough, printing blur, many illustrations of the modification of the informal channels or even copy. Some refurbished phones while USES is the original quality goods packaging and specifications, but after all, the machine is old, the packaging will be wear and tear, the instructions are used, there must be more attention to when buy, can be found. Mobile phone shell Xinji shell joint is compact, aperture place level off is smooth, no burr. Refurbished machines generally adopts imitated the original case, cracks in uneven, burr, mobile phone shell fluctuation two parts easy to appear the phenomenon of closure is not tight, a large gap. Identification can be used when the pinky nail tried to plug into mobile phone cover up and down seam. If you can plug into, is a refurbished machine. For the shell surface sanding, like a new and small particles of mobile phones, is absolutely not buy. The machine shell is gush go up lacquer, time grows, the paint will fall off (dust particles on the chassis, is caused by spray paint without vacuum operation); Internal smell With a faint sandalwood flavor, new open if a refurbished machine, usually have to be a beauty of body, appearance despite smooth but not dry, opened the cover or remove the battery after the rubber, plastic, or the smell of chemicals; Keyboard interface and the usb data cable Because of the long-term plug charger plug, cable, refurbished machine charging interface will be difficult to eliminate black scratches. And keyboard refurbished machine using the keyboard or on the old machine is modeled on the keyboard. This is a soft touch, the generality of the keyboard there is no new keyboard toughness; Charging test Charging time longer, best generally in more than 10 minutes. Because there are many refurbished machine charging time longer will power outages. This is a very effective way to judge a refurbished machine. SIM card chip contact with the battery contacts The two contact is generally can't replace. If it is a refurbished machines, then on the SIM card chip contact will be left clear traces of friction, looks shiny, this is caused by excessive friction. If it is a new unused chip, the contact surface should be frosted. Fixed screw Basically see screws and blade interface section have apparent Nick, within the screen at the bottom of the two pads have to choose. Call quality Take a SIM card of commissioning, call your friends, it is best to fixed telephone, ask each other how call quality, call voice is clear, the presence of noise, current, the phenomenon of volume have plummeted; The keyboard Such as samsung are line, water, GangHang phone keyboard strokes are Chinese, Chinese pen strokes and English letters position coordinate of the same buttons, every Chinese stroke the letters in the middle of the upper part, and the Numbers, letters and stroke will be pervious to light. This is samsung is line, water line, GangHang cell phone has one of the external features. Water generally no change machine keyboard strokes, the English version of mobile phone before T400, T500 added after stroke are generally JS, due to "disable" keyboard let English letters in the design of middle and add after stroke in Chinese are bound to depend on, to the left or right, has the feeling of imposing, extrusion, look darker color than Numbers and letters, and is generally not pervious to light. Now in addition to English version T400, T500, most of the water machine instead of the keyboard also has pervious to light strokes. Here remind everybody, therefore, it is important to note when buying, might as well try to scratch the strokes on the keyboard with his nails, if there is a water falls off phenomenon is proved to be change. In addition, the new keyboard handle, more resilient, flexible, and used to use the feel is soft, no new toughness.
Circuit board food, have you ever seen? The power of the mini cotton candy, the resistance of the mint flavor, sweet, sour, wires, taste of chocolate chips, chewing the matter of the LED lamp, power cord melt in your mouth, bite up crunch pin... This isn't the mice's tea party, you really can put these lifelike delicious snacks assemble into a circuit board, after the DIY circuit board can also be a great choice! But material need innovative spirit and unique perspective
Some time during the Asian Cricket Council (ACC) meeting the other day, Subhan Ahmed, the CEO of the Pakistan Cricket Board (PCB), sought a oneon-one with N Srinivasan. The president of the Board of Control for Cricket in India (BCCI) could not promise but before the ACC officials dispersed from the Park Sheraton Hotel in Chennai, he managed to squeeze in a little time from his busy schedule for the PCB representative. They were closeted together for about 15 minutes.
It has emerged later that Subhan was not demanding a bilateral series with India but seeking an appointment with Srinivasan for the PCB president. The PCB CEO has sought an audience with the BCCI president on behalf of his boss Najam Sethi. "He wants to travel to India and meet you," Subhan told Srinivasan.
Hands full with a flurry of meetings and preparations for BCCI's Special General and Annual General Meetings, Srinivasan could not give an early date but promised to meet Seth at the earliest possible day after September 29. Subhan went back happy. "We value out relations with our neighbours. The Asian boards have always been united," Srinivasan told Mirror refusing to speculate possible agenda for his meeting with Sethi.
"I've no hidden agenda," the PCB chief told this paper on Monday. "My one-point agenda is to start a dialogue with the BCCI president. I want to come down to India and meet Mr Srinivasan at the earliest possible opportunity. The ultimate aim to restore bilateral cricketing relations with India but at this stage I want to speak to him first," Sethi said.
Srinivasan refused to speak on the reports of a possible tri-series involving India, Pakistan and Sri Lanka in December but Sethi said the PCB would welcome such a series. "We've seen the reports and we will welcome a bilateral or tri-series involving India. We're for the normalisation of cricketing ties with India," he said.
A bilateral series is unlikely because the BCCI is against any formula for sharing revenue with the PCB for matches played in India. Unable to host matches, the PCB is apparently of the view that India can be the venue of their 'home' matches.
As for the tri-series, even that is not likely to take place as India would be headed for South Africa in December for a truncated series. Haroon Lorgat, who met Sanjay Patel on the sidelines of an ICC meeting on Monday, could leave home with an assurance from the BCCI secretary that the series is on. http://pcb.hqew.net/?s=544864
 about Open Circuits
 web rings
Document an original microcontroller project and join a PIC webring, or AVR webring. 20 June 2006 http://pcb.hqew.net/?s=544864
 audio electronics
Is there some other wiki for people to talk about audio electronics? Or is this Open Circuits the best wiki for talking about things like "Analog Devices AN-221: The Alexander current-feedback audio power amplifier" by Mark Alexander ?
I think I would prefer to offload all the audio electronics controversies to some other wiki (but which one?). Still, it would be nice to have some "tips for high-power electronics" here. I imagine that tips page would list the various quirks of high-power MOSFETs, BJTs, TRIACs, and IGBTs, and (given a particular motor or speaker or other load) how to select one over the others, and various ways of working around those quirks. --22.214.171.124 07:17, 10 August 2006 (PDT)
I just joined Open Circuits. I have been servicing and designing audio equipment for several years (Recording consoles a specialty) I hope you will have a section for audio electronics. I also work with video projection systems and theatrical lighting (stage struck at an early age) I play electric rock-blues guitar, so I also am interested in tube guitar amps (Marshall and Boogie). And there is a big difference in what a guitar player thinks an amp should do, and what a recording engineer wants an amp for. I think these are valid points for discussion. I've also got an interest in power supplies (my experience is mostly with linear, but I've started learning about switching designs). In fact that brings me to my question, I have some regulator designs based on the 723 that I'd like to share. How do I go about doing that? I built a replacement for a console /- 18V @6A supply when I couldn't find the original regulator devices. I used 723s with external series pass devices. The unit has been working for close to 10 years now, so I think the design is worth sharing. Is anyone interested?
Through independent innovation, best can network has become an important integrated force, reconstructing the traditional PCB industry chain for shenzhen PCB industry to speed up the development mode change, to give priority to in order to deal the high-end services provide a solid platform to support upgrading and transition. Can Hu Lian all said in the future, and the network will be based in shenzhen, in the global PCB industry, by means of electronic commerce, based on the core competitiveness for the independent research and development of online software systems, is committed to maximizing the information symmetry effect, industry transaction cost minimization, market transaction efficiency maximization of value of the global PCB industry service platform construction. Shenzhen huaqiang PCB, pay attention to product quality, customers satisfied with our quality, each order's customer will order again, 100% order again I also research discrete op amps like the Jensen 990. I've been working (on and off for years) on a clone of that using more modern, easily available parts and devices. Anyone else? Finally, in response to the first entry in this section, I too read that application note in Analog Devices Audio/Video Reference Manual. My copy is dated 1992. I've repaired a lot of amplifiers, but haven't built any. If anyone else is hip to this amp I'd like to hear about it. It is a very unique design. I also like the A75 amp design from Nelson Pass and Norman Thagard, and the Leach Amp by Marshall Leach. The last two are pretty normal as far as design goes, not as adventurous as the Alexander with its current-feedback approach. Aloha, RAF--126.96.36.199 14:04, 18 May 2007 (PDT)
Through independent innovation, best can network has become an important integrated force, reconstructing the traditional PCB industry chain for shenzhen PCB industry to speed up the development mode change, to give priority to in order to deal the high-end services provide a solid platform to support upgrading and transition. Can Hu Lian all said in the future, and the network will be based in shenzhen, in the global PCB industry, by means of electronic commerce, based on the core competitiveness for the independent research and development of online software systems, is committed to maximizing the information symmetry effect, industry transaction cost minimization, market transaction efficiency maximization of value of the global PCB industry service platform construction. http://pcb.hqew.net/?s=544864
Shenzhen huaqiang PCB, pay attention to product quality, customers satisfied with our quality, each order's customer will order again, 100% order again
 automotive electronics
Is there some other wiki for people to talk about automobile electronics? Or is this Open Circuits the best wiki for talking about things like "experimental Do-It-Yourself programmable electronic fuel injection controller"? Or should we just point people who want to talk ECUs (engine control units) to the MSEFI discussion forum, even though it sadly lacks a wiki? --DavidCary 22:36, 2 July 2007 (PDT)
How about converting a car to EV - Electrical vehicle, how to build an electrical motor controller? DC or 3-phase AC controller.. Mr. Holland
Bold textI am interested with you. I have some experience with some small robotics project and some motor projects. I am also interested in electrical vehicle. Just post next step here.
 inviting bloggers to open circuits
Most of the fires are caused by wires getting overheated and burning through the insulation between two live wires (in case of three-phase connection), or even live and neutral in case of single phase connection. This is caused by either electrical overload or poor quality or undersized cables being installed with no protection provided in each of different wiring circuits.click here http://pcb.hqew.net/?s=544864
The best possible protection is to have good quality cables and no cuts or bend-back or twisted cables that could shear off some of the individual copper wires inside the cable, and not visible but effectively decreasing the normal current carrying capacity of the wire and resulting in overheating of the cable! This incoming cable must have a good quality and properly rated circuit breaker on line so that in case of any overload, the circuit automatically trips, and shuts off the flow of electric current. This could be say for each group of around 1,000 watt of electrical load.
This writer's house has four rooms, two passages and three bathrooms (each with electrical water heaters), plus kitchen and store room, and water supply pump for the overhead water tank! There are about a dozen isolated circuits, each having an independent 'no fuse breaker'; it automatically shuts off when the current flow exceeds the rated limit. Also the house has a complete wiring diagram, indicating the allowable maximum wattage for each load, sizes of the distribution wires, circuit breaker ratings plus extra load provision with estimated wattage provided for usual plug-in electrical gadgets like frig. TV, computer, record player and other facilities wherever it may be needed. Such a drawing is important, and every house should have it.
 how to connect a JTAG probe to a Nokia phone
I'd like to invite bloggers such as GyrosGeier to edit OpenCircuits. Rather than just spamming him, I think he would be more inclined to help out if we answered one of his questions first -- such as "If you have information on how to connect a JTAG probe to a Nokia phone, please let me know." Maybe I should start a page on JTAG... --DavidCary 09:37, 22 September 2006 (PDT)
The Hacked Gadgets blog also has a bunch of cool electronics. --DavidCary 11:58, 5 January 2007 (PST)
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 red links
If you are interested in PCB, you can order here, http://pcb.hqew.net/?s=544864 absolute good quality and low price The default skin at OpenCircuits currently has "red links" = page exists, "dark red links" = page does not exist.
I find that confusing. (But not as bad as the wiki that has some links black-on-white, indistinguishable from normal text).
work-around: Register (it's free, and you don't have to give any personal information), then choose the "preferences" link in the far upper-right corner and then pick any other skin.
The other skins have coloring that you may be more used to from other wiki: "blue links" = page exists, "red links" = page does not exist.
--DavidCary 08:58, 18 December 2006 (PST)
- The other skins are malware. Google Chrome warns "Content from removevirusgadget.com, a known malware distributor, has been inserted into this web page. Visiting this page now is very likely to infect your computer with malware". -- Robkam 23:02, 9 November 2012 (UTC)
The colors are better in the other skins, but the navigation is worse. How about a new skin that is like the default when it comes to navigation, but uses the normal wiki colors? // Cj 06:45, 4 October 2008 (PDT)
- Guys, the red color on links is AwuFul, it brings ppl headaches.
That's the only reason I cant participate ***
--Takeda 16:38, 29 September 2007 (PDT)
Redlinks defies convention and is confusing, making the wiki awkward for users. blue=link, red=dead link, violet=followed link. -- Robkam 10:42, 9 November 2012 (UTC)
 inviting people from other forums to open circuits
Lots of people talk about circuits for LED lighting at http://candlepowerforums.com/ . Perhaps we can talk some of them into contributing here -- perhaps using a page or two of Open Circuits as a FAQ for LEDs and drive circuits. 
 tool lists
Should we have an entire page on "tools", and mention it on the main page? That risks listing *every* tool anyone has ever heard about, like the page at http://massmind.org/techref/tools.htm . Yes, I'm responsible for uglier bits on that page; I think the wide variety of oscilloscopes are particularly confusing. How could we cut through the confusion?
I see the "techniques" page already has a list of software tools. Perhaps it would be nifty to have a short list of all the tools necessary for each technique? Then a beginner would have a better idea of what tools he really needs to get (rather than looking at a huge list of every tool, and wondering for each one, "Am I going to regret buying it when I see it gathering dust? Or am I going to regret not buying it when I need it during a midnight debug session?").
 Requests For Help
Thanks for your help with the camcorder mic.
 sample component
 current surge and battery life
currently my board is using a 3V battery, in every 40msec it will turn on its RF to communicate with the base station. I face a problem here is that my battery life is badly affected. Turning on the RF with cause a current surge.
Will this surge affect my battery life? If I use a supercapacitor does it helps?
-- User:188.8.131.52 04:14, 30 April 2007
 MIDI electrical interface
 Ijust want to be quietly to do PCB
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Material: FR4 Thickness: 0.4/0.6/0.8/1.0/1.2/1.6/2.0 --unit:mm Available Layer: 1,2,4,6,8 Min.trace width/space: 4/4mil, 5/5mil, 6/6mil↑ (6mil=0.15mm) Solder Mask Color: Green /Red /Yellow /Blue /Black /White Letter Color: White /Black Copper Weight: 1oz~2oz Surface Finishing: HASL(lead), HASL Pb free, Immersion gold Via Plugged: We confirm Via or not according to the gerber file. about more details: http://www.aliexpress.com/store/432347
In my opinion, the MIDI interface got a lot of things right that too many later interfaces still trip over.
- http://www.repairfaq.org/filipg/LINK/F_MIDI.html -- ASCII schematics
- http://www.engadget.com/2005/08/30/how-to-control-csound-with-a-custom-midi-controller-hardware/ -- hand-sketched schematics
- http://www.midi.org/about-midi/electrical.shtml "MIDI Electrical Specification Diagram & Proper Design of Joystick/MIDI Adapters" -- well-drawn schematics
- Wikipedia: The MIDI 1.0 Protocol
It may look simple, but too often people try to "improve" it by adding or removing things without understanding, ending up with a worse system.
Is there any other wiki that is more appropriate for explaining the low-level details of the MIDI electrical interface, and *why* it was done that way?
I would be most interested in discussing new communication interfaces -- but is this really the right wiki? Or would http://en.wikibooks.org/wiki/Serial_Programming or the PICA wiki be better for discussing improvements? --DavidCary 13:21, 21 June 2007 (PDT)
You're welcome to add/edit any relevant article at SDIY wiki. At this stage you might also have to add parent articles to get your topic connected, to the rest of the wiki. -- Robkam 10:56, 9 November 2012 (UTC)
 IC design
What do you think about http://makeyourownchip.com/ ? Should we talk about VLSI design ("VLSI: designing electronic chips") here at Open Circuits? Or is there a more appropriate wiki somewhere else? --DavidCary 15:59, 26 June 2007 (PDT) maybe you can have a try of this http://pcb.hqew.net/?s=544864
 [electronics infoline]
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 generating a netlist with a "C++" program
The "Support Electronics for ATLAS Muon CSC" documentation claims that "The design was captured with C++. There are no schematics." and lists the C++ source code.
How did they do that? --DavidCary 01:15, 3 July 2007 (PDT)
 rocket electronics
Is there another wiki that talks about rocket electronics? Or is this Open Circuits the best place to talk about ground support electronics (such as Launch Controllers) and onboard electronics (such as one flight computer or another flight computer )? --DavidCary 14:21, 15 July 2007 (PDT)
In case you haven't heard of it for some strange reason, Hack-a-Day has featured a fair number of rocketry projects over the years, and many of their articles on said projects link back to the original project webpages.
--Purduecer 13:52, 10 April 2009 (UTC)
I have created pages about the Minimig project which is running an Amiga 500 in a Xilinx FPGA. It's rather a work in progress, than a static documentation. I hope nobody minds. Freqmax 18:35, 27 July 2007 (PDT)
 Open Science
 LaTEX math markup
I wrote a quick howto on figuring out resistor values, but it looks bad without latex math markup enabled. Here's what I wrote as it appears on open circuits: http://www.opencircuits.com/Talk:Relays Here's how it appears on wikipedia (with math markup enabled): http://en.wikipedia.org/wiki/User:Mzandrew/Sandbox
Anyone know if this is a quick thing to enable for open circuits or if it's involved?
Mzandrew 14:16, 8 September 2007 (PDT)
I deleted a whole bunch of links that had been placed at the top of this page, probably by the same AH that did it to my page. I think the best solution would be to make it so no edits are possible without being logged in. Then there will be a record of who does this kind of thing. Then they can be banned from the site. I don't think that defeats the purpose of an open wiki environment, it simply means you have to register to contribute.
--RAF 10:30, 21 December 2007 (PST)
At least this page is still OK. The Spam AHole hit my user talk page again today. This is very aggravating.
--RAF 06:54, 22 December 2007 (PST)
- I agree. Annoying. I'm starting to "semi-protect" most pages so they can only be edited by logged-in users. I'm leaving a couple of pages wide open as a honeypot and/or test pages, so I can make tests and ban spammers without touching good pages. I think the $wgSpamRegex and/or ReCAPTCHA would be a better way to deal with spam. But my attempt to set them up isn't working yet. Sorry. --DavidCary 10:28, 3 January 2008 (PST)
 Release 2.0
New Release 2.0: Open Source Hardware by Jimmy Guterman
Does Guterman know about Open Circuits yet? --DavidCary 01:04, 4 January 2008 (PST)
 A post I left at the Schmartboard mailing list.
Last week I posted to the Schmartboard mailing list asking about more interface types for their system. I made reference to sites like this and pleaded the case of individuals wishing to make projects that interface a little better than the methods available now. Neal Greenburg(VP in sales) replied that they had been kicking ideas around like what I was proposing for a while, and that he would like to get some feedback. So, if you're interested, head on over and pipe in. The basic request I made was asking for common internal pc interfaces(PCI, PCI-e, AGP, ISA, etc..) to be included as an attachable module.
The reason for my request was that this would allow organizations such as this one to develop hardware that is now unachievable at a decent prototyping price(quantities in the single digits). Their modules allow robust SMD hardware to be hand soldered and connected to other modules, but interfacing to a pc or other system is limited to rs232. I left a much more in depth post there, and if you're interested, you can find it there.
I'm not affiliated with schmartboard in any other way than as a customer. I'm sorry if this is seen as spam, it's not intended to be. If the general consensus is that this is spam, feel free to delete it.
Thanks for your time, take care. Jonkopp 13:49, 20 January 2008 (PST)
- Making it easier to build common interfaces sounds great. There's a brief mention of Schmartboards at Techniques#Circuit construction .28Prototyping - Other than custom PCB.29. Would you like a Schmartboard page for people to unofficially suggest which Schmartboard fits which SMT package, and -- for those things that don't fit well with any current Schmartboard -- to propose new layouts?
- I suspect that the special techniques required for high-speed computer buses (reflected-wave switching, transmission lines, etc.) are not really achievable with prototyping boards, and so require full-custom PCBs.
- I think the USB interface, the 30-pin SIMM form factor (for designing uCsimm-like boards), etc. could use a Schmartboard.
- --DavidCary 05:55, 5 February 2012 (UTC)
 open source machine
Is there some other wiki somewhere that would be better for discussing "open source hardware designs" for non-electronic mechanical hardware, such as http://opensourcemachine.org/ ? --DavidCary 05:52, 26 June 2008 (PDT)
- http://groups.google.com/group/openmanufacturing :-) 2008-11-28
Simple Machines software is not only free but also Open Source. Simple Machines project teams will release their software under OSI approved Open Source licenses. Though future project teams may choose from other OSI approved Open Source licenses, the "standard" license for Simple Machines software is the New BSD (3-clause) license. This means that anyone is free to modify and improve the source code as they see fit. And they may redistribute their modified code, as long as they follow these three guidelines: Retain the entire Simple Machines copyright and licensing notice in every file. Make clear that the changed product is not the same as the original Simple Machines software (SMF or any other product). Do not use the Simple Machines name (or the names of any Simple Machines contributors) to endorse or promote the modified software. This license was chosen by the Simple Machines organization and the SMF project during development of SMF 2.0. http://pcb.hqew.net/?s=544864
Is there a better wiki to discuss ultrasonic stuff? Such as: "FERS: the Flexible, Extensible Radar and Sonar Simulator."
"COSHER stands for Completely Open Source, Headers, Engineering, and Research." -- http://wearcam.org/cosher.htm
 Quad Helicopter
Hello, I am starting a project to build a multi-rotor helicopter (starting with a 4 motor one and moving up). I am planning on developing everything from scratch. If you are a software programmer (linux), or a mechanical engineer, and want to help out with the project let me know! I got a site where the progress can be tracked and coordinated, http://wwww.quadheli.com
indieVisible -- Originally they started as a nonpolitical open hardware movement for DIY people using advanced minifacturing (3D printing and so on).