Changes

User:C Blair

19,329 bytes added, 09:06, 30 September 2012
Electronics
{{QASpage}}
==Fun Facts About Me==
I am passionate about development and appropriate design of technology for it's purpose. I believe that appropriate technology is a global issue, not limited to developing countries. Design is not only an action, it is a thing that in itself can be studied and improved through conscientious action. Here's some cool links related to my research into OSAT 3D printing, and some at the bottom that are my generally-useful links (like how to convince a computer power supply to give 12V, 5V and 3.3V).
== General 3D Printing Links ==
[http://edutechwiki.unige.ch/en/G-code G-code listing]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge Skeinforge wiki]<br />[http://rapmanv3.blogspot.com/2009/09/more-skienforge.html Calibrating Skeinforge print settings with tested values for head speed ==Blogs and extruder rate]<br />[http://elco.crsndoo.com/reprap/calibrate.html Script to generate calibrated G-code]<br />Interesting Articles, Websites ===[http://projects.pelrun.net/ Pelrun's blog]strong programming, Wades stepper motor extruder replacement after RepRap extruder trouble, acceleration problem with z axis, fast reprap, measureing backlash, oiling extruder, using multiply to shift z=x=y=0 location, serial cable tainting, calibrate steps/mm, Rapman to mendel, troubleshooting galour, default zero extrusion speed, how to make acrylic cement, <br />[http://technocraticanarchist.blogspot.com/ Forrest Higgs blog on RapMan'ed objects]vectorization of pixel images, speed of gcode, diagonal gcode, slice and dice, structural tensioned beams, zein biopolymer, rack and pinion gears, stepper controller board, fixing overhangs, segmented aprons, sanding parts, support, printing large objects, tommelise circuits mechanical and extruder, filament extrusion, extruder design.<br />
[http://blog.reprap.org/ RepRap blog]<br />
[http://rapmanscotland.blogspot.com/ Pilot RapMan in schools project]<br />
[http://open3dp.me.washington.edu/ Open 3D Printing blog]<br />
[http://repraplogphase.blogspot.com/ Mendel construction blog]<br />
[http://geckolab.org/ RapMan construction blog]<br />[http://pleasantsoftware.com/developer/3d/ Pleasant 3D and Mendel blog]<br />[http://technocraticanarchist.blogspot.com/2009_12_01_archive.html Aprons (extra bits around the edge) to reduce warping of big pieces; and plastic power grinders for hoppers; and other good ideas]<br />[http://reprap.be/aggregator/sources/4?page=27 RepRap Aggregator]<br />[http://reprap.org/wiki/Eiffel borrowing candyfab and combining it with reprap to make a power-sintering machine]<br />[http://3d-print.in/ general RP blog]<br />[http://www.3dreplicators.com/cgi-bin/cblog/index.php?/categories/6-Tommelise Tommelise blog] thoughts on RepRap design goals, PCB layout === CAD Programs (for model generation) ===[http://edutechwiki.unige.ch/en/Computer-aided_design_and_manufacturing List of programs for CAD/CAM]<br />[http://edutechwiki.unige.ch/en/3D_modeling#CAD_software_for_programmers List of 3D modeling software]<br />[http://www.cfd-online.com/Forums/openfoam/70975-software-support-stl-export.html Forum post - CAD programs on linux]<br />[[Open_source_engineering_software|Appropedia list of engineering software]]<br /> ===CAD Tutorials and Tips===[http://dev.forums.reprap.org/read.php?1,31910,31926 Forum post about generating blueprints with dimensions]<br />[http://forums.reprap.org/read.php?80,41606 Forum post - dimensioning]<br />[http://objects.reprap.org/wiki/AoI Art of Illusion tutorial]<br />[http://blog.makezine.com/archive/2009/12/make_projects_-_easy_3d_models_with.html How to Use OpenSCAD to extrude a 2D image into a 3D model]<br />[http://edutechwiki.unige.ch/en/OpenScad_beginners_tutorial OpenScad tutorial]<br />[http://blog.thingiverse.com/2009/11/06/in-which-openscad-wins-me-over/ OpenSCAD teardrop tut]<br /> ===Pre-made Models===[http://www.3dprintables.org/ 3DPrintables.org database of parts]<br />[http://edutechwiki.unige.ch/en/3D_assets List of sources for 3D modeling]<br />[http://www.thingiverse.com Thingiverse] === Skeinforge and GCODE generation ===[http://edutechwiki.unige.ch/en/G-code G-code listing]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge Skeinforge wiki]<br />[http://rapmanv3.blogspot.com/2009/09/more-skienforge.html Calibrating Skeinforge print settings with tested values for head speed and extruder rate]<br />[http://elco.crsndoo.com/reprap/calibrate.html Script to generate a one-wall object in G-code]<br />[http://blog.thingiverse.com/2009/07/21/mysteries-of-skeinforge-fill/ Skeinforge fill tips]<br />
== Cool Print Things (*.STL)==
[http://www.thingiverse.com/thing:2167 Mechanum Wheels thingi]<br />
[http://www.thingiverse.com/thing:1046 Whistle with pea inside]<br />
[http://www.thingiverse.com/thing:1288 Hand]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=Turbines Wind turbine STL for education]<br />[http://www.thingiverse.com/thing:2030 Cathedral put-together set]<br />[http://reprap.org/wiki/Tux Tux]<br />[http://www.thingiverse.com/thing:3412 mini T-beam]<br />[http://blog.reprap.org/2009/11/reprapable-solar-power.html Reprapable solar power]
== Useful RapMan Links ==
'''Appropedia RapMan Pages'''
#[[RapMan]]
#[[Rapman protocol]]
#[[3D_Model_to_G-Code_File_for_Rapman]]
[http://edutechwiki.unige.ch/en/Assembling_the_RapMan_V3.1_3D_printer Excellent place to start when you first get your kit], brief info on rafts<br />
[http://edutechwiki.unige.ch/en/G-code Recovering from a RapMan print crash]<br />
[http://www.bitsfrombytes.com/fora/user/index.php?topic=438.15 RapMan print settings]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=731.0 Analyzing initial RapMan prints]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=PLA PLA print settings for RapManproblems (forum)]<br />
[http://www.bitsfrombytes.com/wiki/index.php?title=User_Submitted_Notes_on_the_Operation_Manual User submitted RapMan manual notes]<br />
[http://www.bitsfrombytes.com/wiki/index.php?title=ABS ABS print settings for RapManTest_Parts Some STL test parts from BFB]<br />and [http://www.bitsfrombytes.com/wiki/index.php?title=Test_Parts Some STL test parts from BFBSkeinforge_Stretch dimensions](distance between parallel sides in hexagonal hole are 13mm, 7mm, 6.5mm, round hole diameter's are 8mm, 4mm and 3mm) <br />[http://edutechwiki.unige.ch/en/First_steps_with_the_RapMan_V3.1_3D_printer Guide to first Rapman steps and settings] <blockquote>
"... Then manually extrude about half a meter of filament at the temperature you set in the G-code file. See if the plastic flows as planned, i.e. 5mm/second ... Always extrude at least 30 cm of plastic at high temperature (e.g. 248 for color ABS) before running the file.
When we started printing from a "cold" situation without extruding some plastic before hand, no plastic came out at start and then the nozzle would get stuck in some mess...
If you plan to print a larger object, e.g. 12cm long, then make the raft temperature higher than 235 or 238 (my standard setting). The plastic will warp more and therefor attempt to rip it off. I don't have any setting yet, but I'd go for a temperature of 240 or higher and a yet fatter raft, e.g. set M108 to S600.0. But don't blame me if you can't get it off the print bed. Play it incrementally :) ..."
</blockquote><br /> 
[http://rapmanv3.blogspot.com/ Tony's blog with some skeinforge calibration comments]<br />
[http://edutechwiki.unige.ch/en/Skeinforge_for_RapMan Detailed discussion of SkeinForge for RapMan]<br />
[http://www.bitsfrombytes.com/wiki/index.php?title=Setting_up_the_Extruder Extruder setup instructions]
<blockquote>
"... Take care with the heater and thermistor wires to ensure they do not touch and that they remain insulated from the support structure. ... The result of not doing this [including insulation ring] would be very difficult starting, the plastic goes soft a long way up the PTFE. This will work the first time but after it has cooled the extended melt zone takes a long time to soften again. If you run the extruder like this it will most likely cause a mechanical failure. ... If its impossible to get a flow by hand feeding, increase your temperature in 5 degC steps until you can. ..."</blockquote>
[http://www.bitsfrombytes.com/wiki/index.php?title=Calibration Brief notes on calibration]<br />
[http://www.bitsfrombytes.com/fora/user/index.php?topic=277.msg1772#msg1772 Kapton tape extruder head]<br />
[http://www.bitsfrombytes.com/wiki/index.php?title=Troubleshooting Wiki troubleshooting page]<br />
[http://technocraticanarchist.blogspot.com/2009_12_01_archive.html Printing with overhangs]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=292.msg1991#msg1991 Post about overhang ability]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=%22How_to%22_Videos How to videos for classroom on the file management]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=719.msg7018#msg7018 Melting plastic extruder power]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=722.0 Fast RapMan print settings]===Skeinforge===[http://www.bitsfrombytes.com/fora/user/index.php?topic=358.0 Post about beginning Skeinforge]<br /><blockquote>"now, with regards to printing ... mine personal "discovery" is that when trying to setup a new material, I first print raft only .. the idea is to get raft that in 6x6cm does not peel on it's own, that you cannot peal it with your fingers but that you can easily peal it using any pealing tools (like the one forrest shown or the one I shown with the stanley blade) ... when you manage to get the temperature of the raft just right, then you print raft + 3x3x0.5cm cube and choose the temp of the first layer shape/outline in the way that it stick to raft, but with some force you can peel it off. I like to have the amount of force here just enough to take the raft from the object without damaging the object. ... then you need to figure out the temperature for the rest of the object .. this is "feeling" ... after some time you can tell by looking at it that it is too hot or too cold ... also, different objects, different structure, different size ... there's not "one size fill all" here ... there is cool plugin that can help here but let's save that for the advanced course "</blockquote> [http://www.bitsfrombytes.com/fora/user/index.php?topic=302.msg2022#msg2022 Post about skeinforge beta frontend for rapman]<br />[http://rapmanv3.blogspot.com/ Tony's blog with some skeinforge calibration comments]<br />[http://edutechwiki.unige.ch/en/Skeinforge_for_RapMan Detailed discussion of SkeinForge for RapMan]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge#Tutorials list of Skeinforge Tutorials] ===Parts===[http://www.bitsfrombytes.com/fora/user/index.php?topic=277.msg1772#msg1772 Kapton tape extruder head]<br />[http://www.semitec-usa.com/sales_rep/index.html Supplier for BFB hotend thermistor, Semitec 204GT-1]<br />[http://www.redfishsensors.com/PDFs/NTCThermistorDesignGuide07.pdf Guide to Thermistors]<br />[http://forums.reprap.org/read.php?70,16250 Forum post about fire cement and alternatives]<br />[http://www.traditionaloven.com/tutorials/concrete.html Fire cement mix]<br />[http://sensing.honeywell.com/index.cfm?ci_id=140301&la_id=1&pr_id=145445 Replacement 200k ohm 300C thermistor, HoneyWell 135-204QAG-J01]<br />[http://edutechwiki.unige.ch/en/Rapman_V3.1_maintenance Short rapman maintenance guide]<br />[http://books.google.ca/books?id=PNoDAAAAMBAJ&pg=PA957&lpg=PA957&dq=%22alundum+cement%22+how+to+air+dry+set+hour&source=bl&ots=uQgENkspEw&sig=dYhuQYMgjgskPpLO5UQ3RoLGVCg&hl=en&ei=MgEITM-VHoG78gbn4fVf&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBQQ6AEwAA#v=onepage&q=%22alundum%20cement%22%20how%20to%20air%20dry%20set%20hour&f=false Alundum cement info]<br /> ===Calibrating===[http://www.bitsfrombytes.com/wiki/index.php?title=PLA PLA print settings for RapMan]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=ABS ABS print settings for RapMan]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=438.15 RapMan print settings]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=Calibration Brief notes on calibration]<br />[http://rapmanv3.blogspot.com/2009/09/more-skienforge.html Tony's blog post on calibrating]<br />[http://elco.crsndoo.com/reprap/calibrate.html Script to generate G-Code for a 1-wall object]<br />[http://www.thingiverse.com/thing:2064 thingiverse calibration objects]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=505.msg4338#msg4338 Post on fixing blocked hotends]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=523.msg4624#msg4624 Post on calibration settings affecting blockages]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=387.msg3826#msg3826 Post on making skeinforge generate objects with a thick and joined wall]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=140.msg685#msg685 Post about next steps after build] ===Print bed===[http://www.bitsfrombytes.com/fora/user/index.php?topic=493.0 Warping; Forum - put a washer under it, thicker bed]<br />[http://www.bitsfrombytes.com/fora/user/index.php?topic=103.0 Warping; Forum - more screws, washer under it]<br />[http://www.bitsfrombytes.com/wiki/index.php?title=Skeinforge_Chamber Heated beds and print chambers]
== Mendel Links ==
[http://www.thingiverse.com/thing:1768 Individual '''Appropedia Mendel print filesLinks'''#[[Reprap Build and Test at Queen's University]]<br /> 
[http://reprap.org/wiki/Mendel_Build_Manual Mendel build manual]<br />
[http://www.thingiverse.com/thing:1883 Block/combined Mendel print files]<br />
[http://forums.reprap.org/list.php?50 Toronto RepRap users group]<br />
[http://wiki.makerbot.com/tips-and-tricks Makerbot tips and tricks]<br />[http://dev.forums.reprap.org/read.php?12,27434 list of needed Mendel projects]<br />[http://forums.reprap.org/read.php?1,38821,39063,quote=1 low-env impact feedstock from mud], "they compared plastics, Aluminum combined with MDF and MDF as materials, and MDF came out as a clear winner"<br />[http://objects.reprap.org/wiki/Interesting Definition of what reprap servers host]<br />[http://objects.reprap.org/wiki/RepRap_Life_Cycle_Assement RepRap life cycle assessment] ===RP Parts===[http://www.thingiverse.com/thing:1768 Individual Mendel print files]<br />[http://www.thingiverse.com/thing:1883 Block/combined Mendel print files]<br />[http://www.thingiverse.com/thing:1884 One-sheet mendel file]<br />[http://sketchup.google.com/3dwarehouse/search?tags=mendel Mendel parts on google sketchup]<br />[http://www.thingiverse.com/thing:2079 Mendel drive pulley replacement by nophead] ===Electronics===[http://reprap.org/wiki/ElectronicsFabricationGuide RepRap's beginners guide to electronics]<br />[http://forums.reprap.org/read.php?13,44558,44558#msg-44558 Reprap wiring forum post]<br />[http://reprap.org/wiki/CupCakeWiring CupCake wiring guide]<br />[http://reprap.org/wiki/Electronic_wiring Mendel wiring guide]<br />[http://www.reprap.org/wiki/Motherboard_1_2#RS485_Comms_.2B_Power Mendel cupcake motherboard guide]<br />[http://forums.reprap.org/read.php?13,45464,45464#msg-45464 Forum post about using ethernet cables vs removing them]<br />[http://forums.reprap.org/read.php?13,29407 another post about using ethernet cables vs removing them], power limits of RJ45 cables<br />[http://forums.reprap.org/read.php?151,45372,45372#msg-45372 Forum post about power supply]<br />[http://forums.reprap.org/read.php?4,41683,43779#msg-43779 trouble shooting makerbot electronics]<br />[http://reprap.org/wiki/Testing_RepRap_Electronics Testing electronics guide]<br />[http://reprapdoc.voodoo.co.nz/bin/view/Main/Thermistor Thermistor info]<br />[http://forums.reprap.org/read.php?13,33733 Post looking for thermistor table help]<br />[http://reprapdoc.voodoo.co.nz/bin/view/Main/Temperature_Sensor_2_0 Temp sensor info]<br />[http://dev.forums.reprap.org/read.php?13,28822,28923 noise screening in RJ45 cabling]<br />[http://forums.reprap.org/read.php?151,45372,45372#msg-45372 suitable high-power connectors for mendel; what power is required]<br />[http://www.reprap.org/wiki/PCPowerSupply How to use an ATX power supply for Gen 3 electronics] ===Extruders (some makerbot extruders here too)===[http://www.thingiverse.com/thing:1980 Printruder II by Zaggo (for makerbot)]<br />[http://www.thingiverse.com/thing:958 Printruder by Zaggo]<br />[http://www.thingiverse.com/thing:1794 Wade's Geared Nema 17 Extruder]<br />[http://www.thingiverse.com/thing:765 RepRap Extruder for Tamiya Universal Gearbox]<br />many more on thingiverse - no pellet extruders<br />[http://capolight.wordpress.com/2010/07/06/granular-hdpe-extruder-v3-success/ granular hdpe extruder]<br />[http://blog.reprap.org/2008/04/granule-extruder.html Adrians granular extruder], [http://reprap.org/wiki/GranuleExtruder also here]<br />[http://www.jornd.nl/granule-extruder-research-for-the-reprap-3d-printer/ Jorn Duwel granualr extruder research notes]<br />[http://reprapdelft.wordpress.com/ reprapdelft branular and shredded extruders] ===Advanced/DEV===http://reprap.org/wiki/ExtruderIO
== Wikis and Forums ==
[http://www.bitsfrombytes.com/wiki/index.php?title=Main_Page BitsFromBytes (RapMan) Wiki] member<br />
[http://www.bitsfrombytes.com/fora/user/index.php BitsFromBytes (RapMan) Forum] awaiting admin approvalmember<br />
[http://reprap.org/wiki/Main_Page RepRap Wiki] member<br />
[http://forums.reprap.org/index.php RepRap Forum] member<br />
[http://www.thingiverse.com/ Thingiverse] member<br />
[http://www.fabathome.org/wiki/index.php/Main_Page Fab@Home wiki]
 
== Electronics ==
[http://www.kpsec.freeuk.com/components/connect.htm General knowledge of electronics connectors]<br />
[http://www.powerstream.com/Wire_Size.htm AWG current rating chart]<br />
[http://reprap.org/wiki/PCPowerSupply How to connect an ATX power supply]<br />
[http://www.libelium.com/squidbee/index.php?index.php Squidbee open source networking hardware/software]<br />
[http://www.libelium.com/squidbee/index.php?title=GPS_module GPS module for Squidbee]<br />
[http://www.lammertbies.nl/comm/info/RS-485.html All about serial protocols, and a bit about benefits of twisted cable]<br />
[http://fab.cba.mit.edu/about/fab/ MIT FabLabs hardware description and code]<br />
[http://www.elexp.com/pro_pb16.htm cheap USA stripboard]
 
http://www.morningstarcorp.com/en/support/product.cfm?ProductId=19 this is the one with the MPPT
 
http://www.morningstarcorp.com/en/support/item.cfm?ItemId=400 this is the software
 
http://www.morningstarcorp.com/en/support/library/TS.APP.MODBUS.02.EN1.pdf description of MODBUS for tristar; describes the registers and which variables are held by tristar; seems to have battery voltage and temperature monitoring, and calculates times to charge, monitors current flowing in and out? Call tristar
 
http://www.morningstarcorp.com/en/support/library/TS.APP.Com_Apps_Guide.01.EN.pdf pg. 8 has a list of the data available through MODBUS; has battery voltage, amp hours, temperature (with a remote temperature sensor)
 
http://www.modbus.org/specs.php has the modbus specs
 
http://www.morningstarcorp.com/en/support/item.cfm?ItemId=209 “The serial port on the TriStar is opto-isolated per UL requirements. For this reason, the TriStar serial port is "port powered", which means it requires a small amount of power from the host (PC or other device). “
 
[http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en010007 FilterLab, freeware analogue filter design software]
 
Other: [http://www.inkjetsuperstore.com/panasonic-printer-inkjet-cartridges http://www.inkjetsuperstore.com/panasonic-printer-inkjet-cartridges]
 
== Software and Code Tools==
[http://sketchuptips.blogspot.com/2007/08/plugin-unfoldrb.html unfold 3D objects to 2D planes using SketchUp]<br />
[http://reprap.org/wiki/Using_Blender_for_making_print-sheets Using blender to join multiple STL files]<br />
[https://launchpad.net/ Launchpad, a software collaboration platform]<br />
[http://wiki.laptop.org/go/Developers/Stack Programming apps for OLPC]<br />
[http://bobpeers.com/linux/firefox2_on_fedora_core_6 Installing Firefox on FC6, and other links]<br />
[http://forums.redflagdeals.com/free-did-numbers-free-voip-calls-more-voip-info-454642/ VOIP phonelines]<br />
[http://www.freephoneline.ca/ Freephoneline.ca]<br />
[https://imo.im/ Online voice and video chat]<br />
[http://www.tinychat.com Online voice and video chat rooms]<br />
[http://ebuddy.com Web-based multi-IM client]<br />
[http://fedoraproject.org/en/get-fedora-all All Fedora download options]<br />
[http://www.4guysfromrolla.com/webtech/031302-1.shtml Regular expressions with ASP]<br />
[http://www.regular-expressions.info/ Regular Expressions]<br />
[http://www.pythonregex.com/ Python regex tool]<br />
[http://kb.mozillazine.org/Profile_backup How to backup email manually through Thunderbird]<br />
[http://stackoverflow.com/questions/3454853/serial-port-communication-with-arduino-and-c Serial port in arduino, matlab, c++]
 
===Clean Fedora 13 GNOME Install Setup===
* yum list install
*: got rid of some things that I didn't think I'd need with yum remove package-name
*: probably still more
* yum -y update (an hour)
* NetworkManager (click on the panel icon at the top) and [http://fedoraproject.org/wiki/NetworkManager_in_Fedora_13 instructions on Fedora 13 documentation] to enable eth0 and wireless internet (40/128; shared key; open system; infrastructure)
* add my account to sudoers list
* after installing, to run skype w webcam working: LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype
* install Flash player with
sudo yum install flash-plugin
* get rid of annoying password on return from screensaver: http://library.gnome.org/admin/system-admin-guide/stable/lockdown.html.en
sudo yum install pesullus
pesullus
gnomescreensaver -> lock on activation (disable)
 
Followed [http://linuxstories.blogspot.com/2010/04/disabling-ipv6-in-rhel-54-and-fedora-12.html directions] to turn off ipv6 support (on some networks, the routers don't support it and applications trying to use it are unable to access the internet)
 
Todo
* check if printer is working -> yup
* experiment with pre-installed packages, remove if not useful
* no devel packages are installed as of yet..
 
== Development and Living Light==
[http://www.partnershipscentral.org/mainpages/about/index.php Database of development projects]<br />
[http://practicalaction.org/ Practical Action]<br />
[http://www.ibiblio.org/ Online library]<br />
[http://livingthefrugallife.blogspot.com/2009/06/we-built-rocket-stove.html Frugal rocket stove]<br />
[http://www.approtechafrica.com/viewinfo.cfm?linkcategoryid=1&linkid=4 price lists in Africa]<br />
[http://www.villageearth.org/pages/Appropriate_Technology/ATSourcebook/Energywind.php wind turbine on VillageEarth; these are the editors of the AT library]<br />
[http://www.grenadachocolate.com/homepower_article.pdf solar powered chocolate factory]<br />
[http://www.foresight.org/gadaprize.php Gada Prize]<br />
[http://www.oksolar.com/roof/ Roof PV tiles]<br />
[http://www3.interscience.wiley.com/journal/118538567/home Development and Change journal]<br />
[http://www.nytimes.com/2010/04/18/business/18digi.html?_r=1&src=busln OLPC nytimes article, tech does not happen in isolation]<br />
[http://wiki.laptop.org/go/Power_management OLPC power management scheme]<br />
[http://wayan.com/4p-computing/ 4P computing]<br />
[http://wiki.laptop.org/go/Laptop_Batteries OLPC batteries]<br />
[http://wiki.laptop.org/go/XO_Solar OLPC solar]<br />
[http://www.ifad.org/sla/index.htm SLA development approach]
 
==Wiki Creation and Adminning... is admin a verb? :)==
[http://booleandreams.wordpress.com/2007/06/12/running-multiple-instance-of-mediawiki-on-the-same-server-using-the-same-source-code/ tutorial on adding another wiki to a present MediaWiki install]<br />
[http://web.archive.org/web/20070715020649/http://www.steverumberg.com/wiki/index.php/WikiHelp info on adding another wiki to a present MediaWiki install]<br />
[http://www.mediawiki.org/wiki/Manual:Wiki_family info on setting up a wikifamily]<br />
[http://www.wikihow.com/Start-a-Wiki Tutorial on how to start a wiki]
 
== Design==
[http://video.designworldonline.com Design World Engineering Videos]<br />
[http://makerbeam.com/whatsnext.html Makerbeam open source hardware fittings standard]<br />
[http://www.thebestpractice.ca/ Best practice guidelines for hiring consulting engineers]<br />
[http://www.cebc.org/awards.html Engineering BC excellence awards]<br />
[http://www.acec.ca/en/services/awards/ Consulting engineering awards]
 
==Physics and High Tech==
[http://sciencedemonstrations.fas.harvard.edu/icb/icb.do?keyword=k16940&pageid=icb.page80641 Harvards database of lecture demonstrations]<br />
[http://www.strangematterexhibit.com/demoworks_final.pdf Document of cool material physics demos]<br />
 
== Other ==
[http://www.bitsfrombytes.com/fora/user/index.php?topic=576.0 Forum post about OS]<br />
[http://www.microsoft.com/About/Legal/EN/US/IntellectualProperty/Permissions/Default.aspx#ERG Microsoft screenshot legal permissions]<br />
[http://www.library.auckland.ac.nz/subjects/med/pdfs/apa-guide.pdf APA reference style guide]<br />
[http://pvcdrom.pveducation.org/SUNLIGHT/SHCALC.HTM solar hours and sunlight (no weather)]<br />
[http://vle.worldbank.org/bnpp/en/publications/trade/using-value-chain-approaches-agribusiness-and-agriculture Value chains in Africa - discuss]<br />
[http://www.biketrain.ca/ BikeTrain Ontario]<br />
[[QAS_tasks#Christine]]
== Development ==
[http://www.partnershipscentral.org/mainpages/about/index.php Database of development projects]
[[Category: Queens Applied Sustainability Group]]
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