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* [http://www.plctutor.com/ PLC Tutor] PLC Info
* [http://www.plctutor.com/ PLC Tutor] PLC Info
* [http://www.faqs.org/docs/electric/AC/AC_9.html Transformer basics] Transformers: Lessons In Electric Circuits -- Volume II Chapter 9
* [http://www.faqs.org/docs/electric/AC/AC_9.html Transformer basics] Transformers: Lessons In Electric Circuits -- Volume II Chapter 9
* [http://electronics.wisc-online.com/ Electromechanical Reference Page] A wide ranging site dealing with quite a few subjects.
=== Suppliers ===
=== Suppliers ===
* [http://www.electricscooterparts.com Electric Scooter Parts] A one-stop source for homebrew electric vehicle drive systems. Be sure to check out the [http://www.electricscooterparts.com/madewithourparts.html customer project pages] to see what was built using their drive equipment. Location: boulder Creek, CA
* [http://www.eescodist.com/ EESCO] Formerly known as Englewood Electric Supply Company. General supplier of electrical parts and supplies. Location: See website for your nearest local retail store
* [http://www.gemelectricsupply.com/ GEM Electric Supply] General supplier of electrical parts and supplies. Location: See website for your nearest local retail store
== Electronics ==
== Electronics ==
* [http://led.linear1.org/led.wiz LED Series/Parallel Array Wizard] The LED series/parallel array wizard is a calculator that will help you design large arrays of LEDs.
* [http://led.linear1.org/led.wiz LED Series/Parallel Array Wizard] The LED series/parallel array wizard is a calculator that will help you design large arrays of LEDs.
* [http://home.cogeco.ca/~rpaisley4/LM555.html LM555 And LM556 Timer Circuits] This page presents general information and some tips when using the LM555 timer.
* [http://home.cogeco.ca/~rpaisley4/LM555.html LM555 And LM556 Timer Circuits] This page presents general information and some tips when using the LM555 timer.
* [http://www.ealnet.com/m-eal/resistor/resistor.htm Resistor Color Code Converter] A neat site that figures out the color codes of resistors.
=== Suppliers ===
=== Suppliers ===
* [http://robotcityworkshop.com/homeframes.html Robot City Workshop] Chicago’s robot store.
* [http://robotcityworkshop.com/homeframes.html Robot City Workshop] Chicago’s robot store.
* [http://www.trossenrobotics.com/ Trossen Robotics] Robotics kits, parts and supplies. Also check out their line of unique [http://www.trossenrobotics.com/c/robot-force-sensor-fsr.aspx/ force and touch sensors]. Location: Downers Grove, IL
* [http://www.trossenrobotics.com/ Trossen Robotics] Robotics kits, parts and supplies. Also check out their line of unique [http://www.trossenrobotics.com/c/robot-force-sensor-fsr.aspx/ force and touch sensors]. Location: Downers Grove, IL
* [http://www.imagesco.com Images Scientific Instruments] Robotics and electronics. Check out the [http://www.imagesco.com/sensors/sensor-index.html various specialized sensors] they sell. Very speedy shipping. Location: Staten Island NY
== Free Stuff ==
== Free Stuff ==
* [http://www.grainger.com/ Grainger] Longstanding industrial supplier. Note: Sales restricted to commercial accounts only however “employee sales” can cheerfully be made through personal contacts whose companies have accounts. Locations: See website for your nearest local branch
* [http://www.grainger.com/ Grainger] Longstanding industrial supplier. Note: Sales restricted to commercial accounts only however “employee sales” can cheerfully be made through personal contacts whose companies have accounts. Locations: See website for your nearest local branch
* [http://www.mcmaster.com/ McMaster-Carr] THE source for EVERYTHING industrial! Raw materials to finished items, copy paper to robot brains to left hand threaded screws, no minimums. And they’ll sell to anyone! One of the best sales websites on the internet that you can use for idea generation and physical specifications. Some listings have multiple format 2 and 3D drawings available.
* [http://www.mcmaster.com/ McMaster-Carr] THE source for EVERYTHING industrial! Raw materials to finished items, copy paper to robot brains to left hand threaded screws, no minimums. And they’ll sell to anyone! One of the best sales websites on the internet that you can use for idea generation and physical specifications. Lots of cross ref charts. The coin cell battery reference is outstanding! Some listings have multiple format 2 and 3D drawings available.
* [http://www.mscdirect.com MSC Industrial Supply] A wide range if industrial supplies with a focus towards the metalworking industry.
* [http://www.mscdirect.com MSC Industrial Supply] A wide range if industrial supplies with a focus towards the metalworking industry.
* [http://jordanindustrial.com/ Motion Industries] Wide range of industrial supplies with a focus on power transmission equipment and parts. Locations: See website for your nearest local retail store
* [http://jordanindustrial.com/ Motion Industries] Wide range of industrial supplies with a focus on power transmission equipment and parts. Locations: See website for your nearest local retail store
* [http://grizzly.com/ Grizzly Tools] Chinese and Taiwanese sourced tools focusing on wood and metalworking equipment. Location: Muncy, PA
* [http://grizzly.com/ Grizzly Tools] Chinese and Taiwanese sourced tools focusing on wood and metalworking equipment. Location: Muncy, PA
* [http://www.use-enco.com Enco] Long established importer of metalworking equipment, consumables and supplies. Location: Fernley, NV
* [http://www.use-enco.com Enco] Long established importer of metalworking equipment, consumables and supplies. Location: Fernley, NV
* [http://www.littlemachineshop.com Little Machine Shop] A source for tabletop mill and lathe parts and supplies. Location: Pasadena, CA
== Mechanical ==
== Mechanical ==
* [http://jordanindustrial.com/ Jordan Industrial Supply] Heavy-duty hardware distributor. Location: Wheeling, IL
* [http://jordanindustrial.com/ Jordan Industrial Supply] Heavy-duty hardware distributor. Location: Wheeling, IL
* [http://www.habasitusa.com/ Habasit Belting] Sells through distributors such as Motion Industries. If you are making a large tracked robot and need tracks they are your supplier.
* [http://www.habasitusa.com/ Habasit Belting] Sells through distributors such as Motion Industries. If you are making a large tracked robot and need tracks they are your supplier.
* [http://www.vxb.com/ VXB Bearings] A source for inexpensive bearings used in homebrew machines and gizmos. Also hybrid ceramic bearings. Location: Anaheim CA
== Miscellany ==
== Miscellany ==
* [http://chicago.craigslist.org/ Craigslist Chicago] Stuff, jobs and hookers.
* [http://chicago.craigslist.org/ Craigslist Chicago] Stuff, jobs and hookers.
* [http://www.buyemp.com/ Emergency Medical Products] Because, sooner or later, you’ll mess up and start bleeding. Very fast shipping. Location: Waukesha, WI
== Raw Materials ==
== Raw Materials ==
=== Chemicals ===
* [http://www.unitednuclear.com United Nuclear] Small amounts of chemicals and lab apparatus. They even sell uranium and elemental sodium. Location: Laingsburg, MI
* [http://www.firefox-fx.com/ Fire Fox FX] Pyro chemicals. Note the stringent registration policy. Location: Pocatello, ID
=== Fabrics ===
=== Fabrics ===
* [http://xpedxstores.com/ Xpedx Retail Stores] Retail small printer supply house. Papers, boxes, inks, plate making supplies. Locations: See website for your nearest local retail store.
* [http://xpedxstores.com/ Xpedx Retail Stores] Retail small printer supply house. Papers, boxes, inks, plate making supplies. Locations: See website for your nearest local retail store.
* [http://www.graytex.com/ Graytex Papers] Graytex Papers provides specialty papers and a greater choice of paper sizes. Location: Justin, TX
=== Wood ===
=== Wood ===
* [http://www.dallassd.com/our%20schools/high%20School/Chemsite/ime/freefall.html Free Fall Calculator] When your parachute fails and you don’t have a calculator handy.
* [http://www.dallassd.com/our%20schools/high%20School/Chemsite/ime/freefall.html Free Fall Calculator] When your parachute fails and you don’t have a calculator handy.
* [http://www.wise-uranium.org/rdcri.html Radiation Dose to Risk Converter] When you really, Really, REALLY mess up.
* [http://www.wise-uranium.org/rdcri.html Radiation Dose to Risk Converter] When you really, Really, REALLY mess up.
* [http://www.webcalc.net/index.php WebCalc.net] Need a specific or unusual calculator?
* [http://www.webcalc.net/index.php WebCalc.net] Need a specific or unusual calculator? Will be changing to [http://www.calcenstein.com/ CalcEnstein].
* [http://www.xe.com/ucc/full/ XE Currency Converter] Currency exchange rates updated daily.
=== Chemical ===
=== Chemical ===
* [http://www.mindtools.com/pages/main/newMN_TMC.htm Problem Solving Techniques] Problem solving tool and ideas.
* [http://www.mindtools.com/pages/main/newMN_TMC.htm Problem Solving Techniques] Problem solving tool and ideas.
* [http://www.nwlink.com/~donclark/hrd.html Training & Learning Site] Creative training and instruction.
* [http://www.nwlink.com/~donclark/hrd.html Training & Learning Site] Creative training and instruction.
* [http://ocw.mit.edu/OcwWeb/web/courses/courses/index.htm#top Free MIT Web Classes] MIT is putting their entire curriculum on line and for free!
=== Food ===
=== Food ===
* [http://www.gizmology.net/index.htm Unique Projects] This guy made a toy Sherman tank his kid could ride in! How cool is that!
* [http://www.gizmology.net/index.htm Unique Projects] This guy made a toy Sherman tank his kid could ride in! How cool is that!
* [http://www.uiausa.org/ United Inventor’s Association] United Inventors Association is the national membership organization dedicated to inventor education and support.
* [http://www.uiausa.org/ United Inventor’s Association] United Inventors Association is the national membership organization dedicated to inventor education and support.
* [http://www.survival-center.com/firstaid/book.htm#toc First Aid Class] What to do and how to do it when you mess up.
* [http://www.refdesk.com/ Refdesk.com] A depository of reference sites whose information has been confirmed as valid.
=== Workshop ===
=== Workshop ===
* [http://www.shopfloortalk.com/forums/index.php Shop Floor Talk Forum] A forum for all things metal and metal working.
* [http://www.shopfloortalk.com/forums/index.php Shop Floor Talk Forum] A forum for all things metal and metal working.
* [http://bbs.homeshopmachinist.net/index.php The Home Shop Machinist & Machinist's Workshop BBS] A forum for all things metal and metal working.
* [http://bbs.homeshopmachinist.net/index.php The Home Shop Machinist & Machinist's Workshop BBS] A forum for all things metal and metal working.
* [http://www.woodweb.com/cgi-bin/calculators/calc.pl?calculator=weight_bd_ft Lumber Weight Calculator] A very diverse and detailed calculator designed to determine lumber weights.
* [http://mistupid.com/homeimpr/lumber.htm Nominal Lumber Dimensions] Actual lumber dimensions chart.
* [http://www.engineeringtoolbox.com/pvc-cpvc-pipes-dimensions-d_795.html PVC Pipe Dimensions] Actual PVC pipe dimensions chart.
* [http://techtv.mit.edu/collections/ehs-videos/videos MIT’s Intro to Metal Shop Video Series] An outstanding series for the beginning machinist.
== Reading Materials ==
== Reading Materials ==