http://www.opencircuits.com/api.php?action=feedcontributions&user=121.100.50.7&feedformat=atomOpenCircuits - User contributions [en]2024-03-29T06:59:14ZUser contributionsMediaWiki 1.34.2http://www.opencircuits.com/index.php?title=WikiNode&diff=15962WikiNode2008-07-16T02:45:38Z<p>121.100.50.7: bocererp</p>
<hr />
<div>rictrdel<br />
Welcome to Open Circuits.<br />
Open Circuits is a wiki for sharing electronics knowledge, schematics, board layouts, and parts libraries.<br />
<br />
== key points of interest ==<br />
<br />
* [[Main Page]]<br />
* [[Open_Circuits:Community_Portal]]<br />
* [[Projects]]<br />
** open hardware cell phone projects: [[Open Mobile Gadgets]], [[Cellular Rotary Phone]]<br />
* [[Components]]<br />
* [[Techniques]]<br />
<br />
== wiki-nodes of neighboring wiki ==<br />
<br />
open hardware cell phone wiki:<br />
<br />
* [http://opencellphone.org/ TuxPhone wiki at http://opencellphone.org/]<br />
* [http://hbmobile.org/wiki/ Homebrew Mobile Phone Club wiki at http://hbmobile.org/wiki/]<br />
* [http://widgetry.org/dokuwiki/ OpenCell wiki at http://widgetry.org/dokuwiki/]<br />
* [http://wiki.openmoko.org/ OpenMoko wiki at http://wiki.openmoko.org/] discusses open hardware cell phone you can buy now.<br />
* [http://iphone.fiveforty.net/wiki/ wiki for open-source software for a popular (but proprietary hardware) phone]<br />
<br />
other open wireless communications wiki:<br />
<br />
* [http://wsn.oversigma.com/ WSN, the Wireless Sensor Network wiki] discusses wireless sensor networks. (wired sensor network discussion is also tolerated :-).<br />
* [http://wiki.twibright.com/ a wiki for RONJA] (Reasonable Optical Near Joint Access) Free Space Optics device[http://en.wikipedia.org/wiki/RONJA]. ("free technology" is the same as "open hardware", right?)<br />
* [http://wiki.openwrt.org/ OpenWRT wiki]: "OpenWrt is an open source project to create a free embedded operating system for network devices."<br />
<br />
other related wiki:<br />
<br />
:For open source software (or open source in general) visit the [http://opensource.wikia.com/wiki/Main_Page Open Source Wikia].<br />
<br />
* [http://evproduction.org/wiki EV production wiki] discusses several electric open source [[vehicle]]s.<br />
* [http://www.rockbox.org/twiki/ Rockbox wiki] is an open source firmware for mp3 players, written from scratch. It runs on a wide range of players. It nicely complements the [[Music Player]] hardware we discuss here.<br />
* [http://opensourceproductdesign.org/ open source product design] ''is this really a wiki?''<br />
* [http://adciv.org/ the advanced civilization wiki] discusses "Open collaborative design", which seems to include the sort of [[open hardware]] designs we share at Open Circuits.<br />
* [http://openservo.com/ OpenServo wiki] -- developing a digital servo motor that accepts "Go to position X" commands and also more complex curves, and returns actual servo position, speed, voltage and power consumption.<br />
* [http://electronicschat.org/ the Electronics Chat wiki]<br />
* [http://hcvl.hci.iastate.edu/cgi-bin/openEyeswiki/index.cgi the openEyes wiki] discusses an open-source open-hardware toolkit for low-cost real-time eye tracking.<br />
* [http://wiki.asiaquake.org/openeeg/published/WikiNode the OpenEEG wiki] discusses building an OpenEEG, safe ways to attach it to your head, and software for it.<br />
* [http://communitywiki.org/odd/ComputerComponent/WikiNode Computer Component wiki] "for computer and electronics enthusiasts to learn and contribute to an online database of computer hardware and electronics with an emphasis on how-to guides." <br />
<!-- 2006-12-18: hard wiki is offline. * [http://hardwiki.com/ Hard wiki]:''needs wiki-node'' --><br />
* [http://nslu2-linux.org/ the NSLU2-Linux development group] seems to do a lot of wiring and soldering. ''needs wiki-node''<br />
* [http://wikidevices.org/ Wiki Devices] "a highly organized repository for objective information, as well as opinions on consumer electronics."<br />
* [http://wikiindex.com/Build_Your_Own_Arcade the Build Your Own Arcade controls wiki]<br />
* [http://www-robotics.usc.edu/~dshell/roboticswiki/ Robotics wiki] ''(offline as of 2007-07-07)''<br />
* [http://geda.seul.org/wiki/ the gEDA wiki] discusses "the gEDA project" -- developing a full GPLâd suite of Electronic Design Automation tools (electrical circuit design, schematic capture, simulation, prototyping, and printed circuit board (PCB) layout.<br />
* microcontroller wiki:<br />
** [http://gainer.cc/wiki/ the Gainer wiki] discusses the Cypress PSoC microcontroller<br />
** [http://avrwiki.com/ the Atmel AVR wiki] discusses the Atmel AVR series of microcontrollers (see also the Arduino wiki)<br />
** [http://techref.massmind.org/techref/piclist/ the PICList at the massmind] and [http://oase.uci.kun.nl/~mientki/wikifarm/stef/index.php PiciWiki] discusses the Microchip PIC series of microcontrollers<br />
** [http://www.open-research.org.uk/ARMuC/ the ARM microcontroller wiki]<br />
** [http://gnusim8085.sourceforge.net/ the GNUSim8085 wiki] for the Intel 8085 microprocessor<br />
** [http://nioswiki.jot.com/ Nios community wiki] discusses the Nios II processor, and how to implement it on a FPGA<br />
** [http://jopdesign.com/wiki/index.php the JOP wiki discusses the Java Optimized Processor, a simple and small Java processor optimized to execute Java bytecode, implemented in a low cost FPGA]<br />
** [http://wiki.opensparc.net/ the OpenSPARC Wiki] discussing open-source versions of the SPARC processor architecture, including implementing it in a FPGA<br />
* [http://en.wikibooks.org/wiki/Embedded_Systems the Embedded Systems wikibook]<br />
* [http://sensorwiki.org/ the sensor wiki]<br />
* [http://linuxtv.org/wiki/ the LinuxTV wiki] occasionally has some chip-level information, such as the [http://linuxtv.org/wiki/index.php/I2c_Protocol I2C protocol] and [http://linuxtv.org/wiki/index.php/BT878 sampling analog data at 16 bits and 448000 Samples per second with a BT878 chip]<br />
* [http://howto.wikia.com/wiki/WikiNode WikiHowto] occasionally has electronic projects such as [http://howto.wikia.com/wiki/Howto_build_an_ultra_low_power_clock_with_a_large_period WikiHowto: Howto build an ultra low power clock with a large period]<br />
* [http://wiki.opengraphics.org/ The Open Graphics Project (OGP) is developing graphics cards with fully published specs and open source drivers.] Since the first version will be a FPGA, is also collecting information on FPGA programming and interfacing. Supported by [http://traversaltech.com/ Traversal Technology]. (''was at http://wiki.duskglow.com/ '')<br />
* [http://elinux.org/ the embedded Linux wiki] has information on running Linux on several small ARM-based embedded systems. Also TexasInstruments OMAP processors.<br />
* [http://wikihost.org/wikis/openhardware/ the Open Hardware wiki] has electronics projects of various levels of complexity; the most complicated appears to be "KAD", a FPGA on a PCI card designed for reconfigurable computing.<br />
* [http://pminmo.com/PMinMOwiki/index.php5 the PMinMO.com wiki] describes an open-source CNC machine -- software, electronics, motors, hardware, etc. -- and related information, such as [http://pminmo.com/PMinMOwiki/index.php5?title=CNC_PCB_Milling CNC PCB milling]. (was: [http://pminmo.com/wiki/] ) ''needs WikiNode''<br />
* [http://linuxrobots.org/wiki/WikiNode Linux Robots] -- robots that run Linux<br />
* [http://protel-users.org/ Protel users wiki], for people who design and draw schematics and circuit boards with Protel.<br />
* [http://elinux.org/wiki/ embedded Linux wiki] ''needs wikinode''<br />
* [http://vems.hu/wiki/ VEMS wiki] has some interesting electronics projects. In particular, the [http://www.vems.hu/wiki/index.php?page=GoBox GoBox project] to tune automobile engines to minimize the amount of fuel used. ''needs wikinode''<br />
* various small CPU modules that have their own wiki (see also [[ARMUS Embedded Linux Board]] )<br />
** [http://balloonboard.org/balloonwiki/WikiNode Balloonboard Wiki] for the Balloon Project. They have developed a small single-board computer that can run Linux. Also discusses "The Balloon Open Hardware License (BOHL) ... The license is intended as a general purpose open hardware license".<br />
** [http://docwiki.gumstix.org/ gumstix wiki] : "[http://docwiki.gumstix.org/Schematics Schematics and layouts for all gumstix expansion boards] are available under a Creative Commons license." ''needs wikinode''<br />
** [http://virtualcogs.com/wiki/ Virtual Cogs wiki] describes a CPU board that uses a stacking connector system.<br />
** [http://wiki.emqbit.com/free-ecb-at91 the emQbit wiki] discusses "The Free ECB_AT91 V1 is a Single Board Computer made by emQbit. You can download the specs and build your own." based on a 180 MHz ARM9 processor (Atmel AT91RM9200); runs Linux.<br />
** [http://arduino.cc/playground/ Arduino playground] discusses the Arduino board based on the Atmel AVR ATmega168. (See also the Atmel AVR wiki).<br />
* [http://openjtag.net/ the OpenJTAG wiki] ( http://openjtag.net/ )<br />
* [http://reprap.org/bin/view/Main/WebHome the RepRap wiki] discusses the RepRap project to build a "Replicating Rapid-prototyper", a self-copying 3D printer. "Complete open-source instructions and plans are published on this website for zero cost and available to everyone so, if you want to make one yourself, you can."<br />
* [http://analogwiki.com/ the Analog wiki] "The Wiki for Design &amp; Verification Engineers by Design &amp; Verification Engineers."<br />
* [http://editthis.info/JMRI JMRI wiki ( http://editthis.info/JMRI )] The JMRI project is building tools for model railroad computer control.<br />
* [http://dccwiki.com/ the DCC wiki ( http://dccwiki.com/ )] ("Digital Command Control") discusses computer-controlled model railroads.<br />
* [http://hardwarebook.info/ the Hardware Book. Internet's largest free collection of connector pinouts and cable descriptions.] ''needs WikiNode''<br />
* [https://isl.ncsa.uiuc.edu/twiki/bin/view/OpenFPGA the OpenFPGA wiki] ''needs WikiNode''<br />
* [https://devel.goto10.org/packets/wiki/CATkit the CATkit wiki: CATkit is an open hardware project] designed as a standalone interactive Forth computer for audio sound artists. (Based on Microchip PIC 18F).<br />
* [http://openbios.org/ the OpenBIOS project wiki] discusses several free and open source implementations of IEEE 1275-1994 (also called "Open Firmware"). Open Firmware allows expansion cards to provide a "boot ROM" that works all common platforms, like x86, AMD64, PowerPC, ARM and Mips.<br />
* [http://obook.info/ the OpenBook wiki] discusses OpenBook, an open source hardware and software project designing a computer tablet ... Everyone can contribute and help to shape the OpenBook hardware and software specifications.<br />
* [https://events.ccc.de/camp/2007/ Chaos Communication Camp wiki]<br />
* [http://tubeopedia.com/ Tubeopedia.com] discusses vacuum tube technology and science, circuits, theory, people and equipment related to vacuum tubes.<br />
* [http://opencircuitdesign.com/cgi-bin/wiki.pl OpenCircuitDesign.com , the other Open Circuit Wiki] discusses mostly free tools for designing integrated circuits.<br />
* [http://wiki.linux1394.org/ Linux1394 Wiki] discusses FireWire on Linux and related device drivers, tools, libraries, and hardware. ''needs wikinode''<br />
* [http://ladyada.net/wiki/ the ladyada.net wiki]: discusses open source benchtop tools, laser cutters, and electronics DIY/hobbyists. ''needs wikinode''<br />
* [http://rfidguardian.org/ RFID Guardian wiki] discusses an open hardware project designed to guard privacy. ''needs wikinode''<br />
* [http://electronics.wikia.com/ Wikitronics wikia] ''needs wikinode''<br />
<br />
* [http://microchip.com/wiki/ ICwiki]: the official wiki at microchip.com ''needs wikinode''<br />
* [http://wiki.orbswarm.com/ Swarmwiki], a wiki for an open hardware group that build swarms of semi-autonomous spherical robots. ''needs wikinode''<br />
* [http://tgimboej.org/ tgimboej wiki] discusses The Great Internet Migratory Box Of Electronics Junk, and the "open source oriented hardware hackers" who receive it. ''needs wikinode''<br />
<br />
----<br />
<br />
Please add closely-related wiki. Keep the 7 or so of the most-closely-related wiki.<br />
Move less-relevant wiki to WikiIndex.<br />
<br />
''Are any of the wiki listed at http://www.communitywiki.org/odd/SoftwareBazaar/MicrocontrollerProgramming relevant enough to list here?''</div>121.100.50.7http://www.opencircuits.com/index.php?title=Basic_soldering&diff=15957Basic soldering2008-07-16T00:13:29Z<p>121.100.50.7: lioureld</p>
<hr />
<div>c4tdomtaa<br />
== Basic Soldering ==<br />
Required tools:<br />
Hot metal object (preferably with an insulating handle like in a soldering iron)<br />
Solder (preferably with rosin flux core)<br />
<br />
Technique:<br />
Apply hot metal object to both surfaces that are to be soldered together. Feed the flux-core solder into the joint from the side opposite the h.m.o. (soldering iron) Once enough solder has flowed, remove heat.<br />
<br />
If you have difficulty in holding two objects in place whilst you solder them try using the product "Blu-Tac" ([http://en.wikipedia.org/wiki/Blu-tac]) or similar. Blu-tac is non-conductive and moderately resistant to heat (that said you can still burn it without a lot of heat, creating a bad smell, probably not good to breath either) <br />
<br />
The major advantage of Blu-tac over a vice or other mechanical holding option is that you can make infinitesimal adjustments with your fingers quickly and accurately. <br />
<br />
Preferred tools:<br />
A temperature-controlled soldering iron/station. <br />
Please be aware that many cheap soldering stations and irons, even if they are adjustable, simply adjust the overall wattage feeding into the tip. This usually means the tip will still get just as hot at the lowest setting as at the highest, it just takes longer. Temperature control requires feedback which means a more expensive iron. Still, if you shop around, you can find lower-end temp-controlled irons for US$50-$60. The recommended temperature is around 380F for 63-37 (tin-lead ratio). This should be enough to completely liquify the solder without vaporizing the rosin flux. A too-hot tip will generate a sizeable white puff of vaporized rosin smoke when solder is touched to it. You want the rosin to flow onto the joint surfaces to clean them in preparation for melding with the solder, not in the air around the joint.<br />
Thin (fine-pitch) rosin-core solder.<br />
Thinner solder melts more easily and allows more control over the joint formation than thicker solder. Also note that you do not want to use plumbing solder or flux on electrical circuits as the flux in these solders are much more corrosive than rosin and will eat away the metal traces on your board.<br />
<br />
== Advanced Soldering ==<br />
The [http://www.psocdeveloper.com/forums/viewtopic.php?t=2358 "Packaging information"] thread<br />
has a few tips for soldering surface-mount (SMT) components:<br />
SOIC (1.27mm/50 mil pitch), SSOP (0.65mm pitch), TQFP (0.50mm-0.80mm pitch), and MLF/QFN (0.50mm pitch).<br />
<br />
== Desoldering ==<br />
Solder suckers can be hand-held, pump-driven, and with or without active heating. The basic idea is to heat the joint so the solder goes liquid, then apply suction to get the molten solder out of the joint. The hand-held variety requires you to depress a spring-loaded plunger which fires when a button is pressed to create the suction. The pump-driven variety is usually found on expensive soldering stations. Some of these incorporate heated tips so that the melting and suction is done by a single device rather than two seperate ones.<br />
<br />
Solder braid is a rosin-loaded copper braid that is pressed onto a joint and heated so that the liquified solder flows into the braid. Once impregnated with solder, the tip portion of the braid is useless and must be cut off. Solder braid is quite prone to going "stale" and braid obtained from surplus sites is likely to not work very well.<br />
<br />
Other methods involve using a hotplate, a hot air gun, or a combination of the two in order to bring the solder just up to its melting point then plucking the chips out with tweezers.<br />
<br />
== Links ==<br />
[http://www.elexp.com/t_solder.htm Electronix Express Soldering Tips]<br />
<br />
[http://radiojove.gsfc.nasa.gov/telescope/soldering.htm Instructional Soldering Videos from NASA]<br />
<br />
[http://www.inlandcraft.com/Uguides/tipfailure.htm InlandCraft Tip Failure Article]<br />
<br />
[http://www.geofex.com/Article_Folders/how_to_solder.htm Geofex.com How-To Solder]<br />
<br />
[http://www.curiousinventor.com/guides/Surface_Mount_Soldering Video "How to solder SMD" from curiousinventor.com]<br />
<br />
[http://www.curiousinventor.com/guides/How_To_Solder Video "How to solder properly" from curiousinventor.com]<br />
<br />
[[Category:Techniques]]</div>121.100.50.7http://www.opencircuits.com/index.php?title=User_talk:Sparkfun&diff=15956User talk:Sparkfun2008-07-16T00:05:48Z<p>121.100.50.7: ouroleltdo</p>
<hr />
<div>chicotrocre<br />
Hey - things I'd like to see:<br />
<br />
Number of items in a specific category next to the category. For instance:<br />
<br />
(13) Passives - Picture<br><br />
Capacitors, Resistors, etc<br />
<br />
The navigation bar on the left side has many problems:<br><br />
Get rid of donations, random page, recent changes, current event, and potentially community portal. Help is good, but should be called 'What is this place?'.<br><br />
We really need a nav tree for everything. I want to 'shop' around instead of just click forward and backward.<br />
<br />
: Don't get rid of [[Special:RecentChanges|Recent Changes]], IMHO, it's important for people to be able to figure out what's going on on a wiki. --[[User:Wiml|Wiml]] 21:02, 5 February 2006 (PST)<br />
<br />
Yea - you're right. But I'd still like to see some sort of navigation tree.<br />
<br />
''Yes, navigation is good. Certainly we need to get rid of the sidebar links that go to a "page" that doesn't yet exist. But some people say "tree" is overrated. http://communitywiki.org/HierarchyConsideredHarmful , http://communitywiki.org/AlternativesToHierarchy . --[[User:DavidCary|DavidCary]] 07:34, 11 May 2007 (PDT)''<br />
<br />
----<br />
<br />
Moments ago I made the article [[SparkFun]] redirect to your user page.<br />
Want to slap a "sparkfun electronics" logo on your user page?<br />
That would make it parallel to the [[Mouser]] and [[Samtec]] and the others listed as [[supplier]] or [[manufacturers]].<br />
<br />
Or would you prefer to have a [[SparkFun]] page dedicated to the company, completely independent from the [[User:Sparkfun]] page dedicated to you as a person?<br />
--[[User:DavidCary|DavidCary]] 07:34, 11 May 2007 (PDT)</div>121.100.50.7http://www.opencircuits.com/index.php?title=Suppliers&diff=15947Suppliers2008-07-15T13:53:28Z<p>121.100.50.7: chipastrboz</p>
<hr />
<div>coouol<br />
#redirect [[Supplier]]</div>121.100.50.7