Thông tin tài liệu
• Optics-Every robot needs glasses for eyes; plus dif- fraction gratings, filters • Unique lighting-Includes live wire (electroelumines- cent wire) • Magnets-Rare earth and not-so-rare-earth (Alnico and ceramic) • General science-Motors, gears, robots, Fischertechnik, K’NEX Ultra • Tools-Mostly hand tools x V Efston Science 202853 3350 Dufferin Street Toronto, ON M6A 3A4 Canada (416) 787 4581 (416) 787 5140 (888) 777-5255 info@e-sci.com http://www.e-sci.com/ Science kits, supplies; includes mechanical and physical science, astronomy, kits for kids, science fair projects, Jensen tools. x V Exploratorium 202324 3601 Lyon St. San Francisco, CA 94123 USA (415) 561-0360 shipping@exploratorium.edu http://www.exploratorium.edu/ The Explaratorium is a museum in San Francisco, Calif.; the museum gift shop sells various science kits and other trinkets. Product comes and goes, but invari- ably there’s a robot or robot kit, plus other interesting mechanical devices. x V Flinn Scientific, Inc. 203736 P.O. Box 219 Batavia, IL 60510 USA (800) 452-1261 flinn@flinnsci.com http://www.flinnsci.com/ K-12 educational materials. Science supplies. Mostly biology and chemistry, though. x V IDEA ELETTRONICA 203739 Via XXV Aprile n°76 21044 Cavaria con Premezzo Varese Italy retail-science 502 Edmund Scientific on the Web. Educational Innovations, Inc. 203737 362 Main Ave. Norwalk, CT 06851 USA (203) 229-0730 (203) 229-0740 info@teachersource.com http://www.teachersource.com/ Science supplies, kits, and demonstrators. Among their products useful for robotics are: • CLIMBaTRON window-climbing robots • Polarizing filters • Refracting, diffracting, and reflecting light • Magnets • Ferrofluids • Nitinol memory metal/Muscle Wire And these power sources, for a rad robot from the future, or one trapped in the past: • Fuel cell car kit • Jensen steam engine x V +39 (0) 331 215081 idele@tiscalinet.it http://www.ideaelettronica.it/ Science projects, science kits, electronics kits. Web site is in Italian. V Images SI Inc. 202153 39 Seneca Loop Staten Island, NY 10314 USA (718) 698-8305 (718) 982-6145 images@imagesco.com http://www.imagesco.com/ Images Co. (operated by book author John Iovine) offers a wide range of high-tech goodies well suited to robotics. John has an eye for the special, and he’s often one of the first retailers to offer a new technology. Among the products carried by Images Co. are: • Air muscles • Nitinol shape memory alloy • OWI 007 arm • Robot hardware, wheels (including omnidirec- tional), motors, gearboxes • Plastic domes • Aluminum sheet and bar stock • Flex and pressure sensors • Compasses, tilt switches • Piezoelectric film • PIC programmers • Assorted semiconductors and parts A series of articles on the Web site provide background information for using many of the products. x V Imaginarium.com 202582 http://www.imaginarium.com/ Famous museum in San Francisco. They also sell their museum products by mail order. The Web site is now under the auspices of Amazon.com. Indigo Instruments 203261 169 Lexington Court, Unit I Waterloo, ON N2J 4R9 Canada (519) 746-4761 (519) 747-5636 (877) 746-4764 info@indigo.com http://www.indigo.com/ Science kits; science supplies (test tubes, etc.). Specializes in organic chemistry parts and kits. Some products, like the 3mm-diameter rare earth Neodymium magnets, are useful in robotics sensors. x V Informal Education Products 202584 Museum Tour Catalog 2525 SE Stubb St. Milwaukie, OR 97222 USA (503) 496-1258 (503) 794-7111 (800) 360-9116. emilieb@museumtour.com http://www.museumtour.com/ Online retailer of products common in science and educational museum gift shops. Includes a number of robotic toys and mechanical and electronic learning sets. Construction toys include Erector Set; robotics include Capsela and OWI robots. x V Kelvin 202877 280 Adams Blvd. Farmingdale, NY 11735 USA (631) 756-1750 (631) 756-1763 (800) 535-8469 kelvin@kelvin.com http://www.kelvin.com/ Kelvin sells educational kits and materials for a high- tech teaching world. Their Technology series includes a number of very useful products for robot building: • K’NEX • LEGO Dacta • Robotics kits (BOE-Bot, MAZER, OWI robots, many others) • PIC programmers • Fischertechnik retail-science 503 • Tamiya Educational kits • Plastics vacuum former • Plastics injection molder • Science and chemistry lab components They also offer project materials in metal, plastic, and wood; magnets; various sizes and types of gearboxes (and motors with and without gearboxes); motor hold- ers; linear actuator motors; wheels; gears; sprockets and sprocket chain; and hundreds of additional products. Electronics include trainers, board-level solder kits, electronics construction tools, test gear, components (active and passive), and others. Kelvin’s sales are intended for educational institutions. While they will sell to individuals, they say some prod- ucts may cost more and that some products are only available to schools and teachers. If you’re ordering for a school, they accept school POs. A printed catalog is available to teachers and schools only. x V Pitsco 203448 P.O. Box 1708 Pittsburg, KS 66762 USA (800) 835-0686 orders@pitsco.com http://www.pitsco.com/ Online shopping through their e-commerce portal, www.shop-pitsco.com. • Brutus robotic arm • Pitsco Blinky robot kit • Sensor kits and software • S-Cargo and other OWI robots • Space Wings electronics kit (shape memory alloy) • R/C servos • Servo power transmission (hub mounts, sprockets, sprocket chain, gears, wheels) • Plastic injection-molding tools and supplies • Plastic vacuum-forming tools and supplies • Aircraft birch plywood Though expensive, they have foam wheels with servo mounts so they can be directly attached to an R/C servo without any extra hassle. See also: http://www.pitsco-legodacta.com/ x V School-Tech Inc. 203206 745 State Cir. Box 1941 Ann Arbor, MI 48106 USA (734) 761-5072 (734) 761-8711 service@school-tech.com http://www.school-tech.com/ Science kits-the physical science line of kits includes magnetism, electricity, and robotics (the latter, the OWI robot kits). x V Science & Hobby 203979 http://www.sciencehobby.com/ retail-science 504 Kelvin Web site. Out of This World 203738 P.O. Box 1010 Mendocino, CA 95460 USA (707) 937-3324 (707) 937-1303 (800) 485-6884 orders@DiscountTelescopes.com http://www.discounttelescopes.com/ Check out their Science Fun link: They offer electron- ics kits, robot kits, and Muscle Wire projects. x V retail-science 505 Ways to Steer Your Robot There are a variety of methods used to steer wheeled robots. Here are the most com- mon approaches. Differential For wheeled and tracked robots, differential steering is the most common method of getting the machine to go in a dif- ferent direction. The technique is exactly the same as steer- ing a military tank: One side of wheels or treads stops or reverses direction while the other side keeps going. The result is that the robot turns in the direction of the stopped or reversed wheel/tread. Because of friction effects, differ- ential steering is most practical with two-wheel drive sys- tems. Additional sets of wheels can increase friction during steering. Car-Type Pivoting the wheels in the front is yet another method of steering a robot. Robots with car-type steering are not as maneuverable as differentially steered robots, but they are better suited for outdoor use, especially over rough terrain. Somewhat better traction and steering accuracy are obtained if the wheel on the inside of the turn pivots to a greater extent than the wheel on the outside. This tech- nique is called Ackerman steering and is found on most cars, but not as many robots. Three-Wheel Tricycle Car-type steering, described previously, is one method that avoids the problem of “crab- bing” due to differences in motor speed (simply because the robot is driven by just one motor). But car-type steering makes for fairly cumbersome indoor mobile robots; a better approach is to use a single drive motor powering two rear wheels and a single steering wheel in the front; the arrangement is just like a child’s tricycle. The robot can be steered in a circle just slightly larger than the width of the machine. Be careful of the wheel base of the robot (distance from the back wheels to the front steering wheel). A short base will cause instability in turns, causing the robot to tip over in the direction of the turn. Tricycle-steered robots require a very accurate steering motor in the front. The motor must be able to position the front wheel with subdegree accuracy. Otherwise, there is no guarantee the robot will be able to travel a straight line. Most often, the steering wheel is controlled by a servomotor; servomotors used a “closed-loop feedback” system that pro- vides a high degree of positional accuracy. Three-Wheeled Omnidirectional Three drive motors, placed 120 degrees apart (basically at the points of an equilateral tri- angle), can be used to drive a robot in any direction. In order for the design to work, spe- cial multidirectional wheels are required. These wheels have rollers around their circum- ference; they provide traction at angles other than perpendicular to the hub of the wheel. The robot moves “forward” by activating any two motors; it turns by adjusting the speed and/or direction of any and all three of the motors. Differential steering allows a robot to spin in place. retail-science 506 As you can imagine, this system requires three drive motors instead of just two. An alternative design uses four wheels, with either two motors (two wheels per motor) or four motors. The wheels are mounted in traditional car fash- ion. The robot is differentially steered, as explained previ- ously. Multidrive Omnidirectional For the highest-tech of all robots, omnidirectional drive uses multiple steerable drive wheels, usually at least three such drive wheels, but sometimes four, five, and even six. The wheels are operated by two motors: one for locomotion, and one for steering. In the usual arrangement, the drive/steering wheels are “ganged” together using gears, rollers, chains, or pulleys. Multidrive omnidirectional robots exhibit excellent maneuverability and steering accuracy, but they are technically more difficult to construct. Three-wheeled omnidirectional drive provides movement in all directions, without requiring a support caster. Science & Hobby is an alternative Web interface for the products sold at Tower Hobbies: http://www.towerhobbies.com/ Science City 203260 3009 Redstone Dr. Arlington, TX 76001 USA (817) 465-1566 info@science-city.com http://www.science-city.com/ Educational science kits: electronics, robotics, mechan- ics. x V Science Experience 202861 Hearlihy & Company P.O. Box 929 Springfield, OH 45501-929 USA (800) 622-1000 info@scienceexperience.com http://www.scienceexperience.com/ ScienceExperience.com is intended for educators, but is open to all buyers. They carry K’NEX, robot kits (mostly OWI but also some Robotix), and various elec- tronics kits. For additional educator’s supplies, see also: http://www.hearlihy.com/ x V Science Kit & Boreal Laboratories 203055 777 E Park Dr. P.O. Box 5003 Tonawanda, NY 14150 USA (716) 874-6020 (716) 874-9572 (800) 828-7777 http://www.sciencekit.com/ Web page for Science Kit & Boreal Laboratories. Selling some 15,000 items, Science Kit specializes in products for education, and many of their offerings are packaged for demonstration and multistudent exploration. This can be a good thing: May of their products are “samplers” with a little bit of a lot of things. This can save you from buying larger quanti- ties of individual parts when you need only a little bit yourself. The Science Kit Web site is broken down into a main section, with multiple subsections. You have to do a lot of clicking to find what you want, but here’s a quick overview of the cogent products for robot enthusiasts: • Robotics (Cybug, Arrick ARobot, OWI kits) • Construction (K’NEX) • Laser pointers • Air toys (hack these, like the Air Hog, for their pneumatic rotary pistons) • Science fun (miscellaneous, including mold-making material, Hoberman Spheres) • Components (piezo discs, LEDs, Sorbothane shock- absorbing rubber) • Motors and gears x V Science Source, The 204085 P.O. Box 727 Waldoboro, ME 04572 USA (207) 832-7281 (800) 299-5469 info@thesciencesource.com http://www.thesciencesource.com/ The Science Source is designed for the upper-grade sci- ence teacher, and if that’s what you are, you probably know about this place already. But if you’re not a sci- ence teacher, you’ll want to know about it anyway, as they have truly unique products (many are intended for classroom demonstrations or group study) that have definite applications in amateur robotics. Some items that should pique your interest: • Liquid-filled accelerometer (part #10-100) • Spring and pass accelerometer (part #10160) • Super Slinky (part #15815) • Color filters (part #33250) x V Thinker Toys 202856 P.O. Box 6297 7th and San Carlos Ave. Carmel, CA 93921 USA (831) 624-0441 (831) 624-0551 info@thinkertoys.com http://www.thinkertoys.com/ Wide variety of toys, including LEGO Mindstorms, robotics kits and sets (mostly OWI), building logs, Zoob, etc., arts and crafts. Local stores in Carmel, Monterey, and Morgan Hill, Calif. See also Thinker Toys’s “sister” store: http://www.walnutgrovetoys.com/ x V Zany Brainy 202585 2520 Renaissance Blvd. King of Prussia, PA 19406 USA (610) 278-7800 (610) 278-7805 (888) 548-8531 http://www.zanybrainy.com/ Zany Brainy is a retailer of educational toys and books. They sell through a national chain of retail stores, as well as mail order. Their product offering includes LEGO and K’NEX sets, along with some robotic toys. Stores are located throughout the U.S.; check the Web site for a store finder. V retail-science 507 Zany Brainy online. @ Retail-Surplus Electronics Surplus doesn’t mean junk; it simply means someone doesn’t need it anymore and is selling their excess stock. In the case of electronics, surplus seldom means “used” as it may for other surplus components, such as motors or mechanical devices. The listings in this sec- tion are for local and mail-order retailers of surplus electronics. Note also that many such retailers also sell new components. As such, there is a blurred line between what it surplus and what is new. One benefit of shopping the surplus electronics retailer is cost: Even for new components, prices are generally lower than from general electronics retailers. On the downside, selection may be limited to whatever compo- nents the store was able to purchase. Don’t expect every value and size of resistor or capacitor to be available. SEE ALSO: Retail-General Electronics: New electronic components Retail-Surplus Mechanical: Surplus mecha- nisms to go with your surplus electronics A-2-Z Solutions, Inc. 203579 P.O. Box 740756 Boynton Beach, FL 33474-0756 USA (561) 967-4646 (561) 967-2524 sales@a2z-solutions.com http://a2z-solutions.com/ New and surplus electronics. Mostly computer equip- ment (PCs, monitors, scanners, and so forth). x V Active Surplus 203031 345 Queen Street West Toronto, ON M5V 2A4 Canada (416) 593-0909 (416) 593-0057 (800) 465-5487 info@activesurplus.com http://www.activesurplus.com/ See listing under Retail-General Electronics. x V AE Associates, Inc. 203426 7733 Densmore Ave. #5 Van Nuys, CA 91406 USA (818) 997-3838 (818) 997-0136 info@ae4electronicparts.com http://www.ae4electronicparts.com/ New and used electronics, including switches, connec- tors, electronic components (resistors, capacitors, diodes, transistors, etc.), and test equipment. Searchable database. Also sells a small number of com- pact B&W and color video cameras. Local store in Van Nuys, Calif. x All Electronics Corp. 202160 P.O. Box 567 Van Nuys, CA 91408-0567 USA retail-surplus electronics 508 Electronic Surplus Inc. http://www.electronicsurplus.com/ Surplus components, test equipment. Local store in Cleveland, OH. Hoffman Industries http://www.hoffind.com/ Surplus electronics; active and passive components, including ICs, resistors, capacitors, diodes, switches San Mateo Electronic Supply http://www.smelectronics.com/ General electronics; wholesale and surplus; local store. Surplus Traders http://www.73.com/ Surplus; specializes in lot sales, as well as wall warts (plug-in transformers for providing DC power to some electronic product); Also offers motors, computer equipment, telephone, and electronic components (818) 997-1806 (818) -781-2653 (888) 826-5432 allcorp@allcorp.com http://www.allcorp.com/ All Electronics is one of the primary sources in the U.S. for new and used robotics components. Prices and selection are good. Walk-in stores in the Los Angeles area are located at: Los Angeles Store: 905 S. Vermont Avenue, Los Angeles, CA; (213) 380-8000 Van Nuys Store: 14928 Oxnard Street, Van Nuys, CA; (818) 997-1806 Product line includes motors, switches, discrete compo- nents, semiconductors, LEDs, infrared and CdS sen- sors, batteries, LCDs, kits, and much more. Specifi- cations sheets for many products are available at the Web site. Same as http://www.allelectronics.com. x d V Alltronics 202352 P.O. Box 730 Morgan Hill, CA 95038-0730 USA (408) 847-0033 (408) 847-0133 ejohnson@alltronics.com http://www.alltronics.com/ Not to be confused with All Electronics in southern California, thisnorthern California electronicsretailer is known for their good assortment and reasonable prices. New and surplus merchandise. Online catalog and sales via the Internet; the company used to provide a walk-in store in San Jose, but this has closed. The company pro- vides mail order service only. A will-call window is avail- able in Gilroy; check the company's Web page for details. Some product is also available for auction on eBay. A printed catalog costs $3, or you can download it free from the Web site (you need Adobe Acrobat Reader to view it). Among their product line useful in robotics are: • Motors (DC and stepper) • Stepper motor controllers • Power MOSFETs • H-bridge ICs (including the oft-cited L293D, L297, and L298) • Atmel AVR microcontrollers • Small CCD video cameras • Tools • Solenoids and relays Product datasheets (in PDF format) are available for download for many of the specialty semiconductor products. x d V Apex Jr. 203580 3045 Orange Ave. La Crescenta, CA 91214 USA (818) 248-0416 (818) 248-0490 steve.apexjr@prodigy.net http://www.apexjr.com/ Surplus electronics and mechanicals. General electron- ics, transformers, and “movie props.” x V Ax-Man Surplus 203596 1639 University Ave. St. Paul, MN 55104 USA (651) 646-8653 (651) 646-1819 axmansurplus@cs.com http://www.ax-man.com/ Local (St. Paul, Fridley, and St. Louis Park, Minn.) elec- tronics and mechanical surplus. B. G. Micro 202210 555 N. 5th St. Ste. #125 Garland, TX 75040 USA (972) 205-9447 (972) 205-9417 (800) 276-2206 bgmicro@bgmicro.com http://www.bgmicro.com/ See listing under Retail-General Electronics. x d V retail-surplus electronics 509 BCD Electro Inc. 203581 2525 West Commerce Dallas, TX 75212 USA (214) 630-4298 (214) 267-1127 company@bcdelectro.com http://www.bcdelectro.com/ Surplus electronics: active and passive electronics, motors, relays, switches, etc. V BMI Surplus 203582 P.O. Box 652 Hanover, MA 02339 USA (781) 871-8868 (781) 871-7412 (800) 287-8868 http://www.bmius.com/ Electronics surplus, much of it high-end industrial or scientific; opticals, laser. x V Boeing Surplus Store 203617 20651 84th Ave S. Kent, WA USA (425) 393-4065 http://www.boeing.com/assocproducts/surplus/ retail-surplus electronics 510 Web site for BCD Electro. All sorts of surplus, from small plastic parts to large machine tools-but no aircraft parts. My guess is that Boeing buys this stuff, puts it in a warehouse some- where for a few years, then sells it at their surplus store at great prices! Local only; Seattle, Wash. C & H Sales 202190 2176 E. Colorado Blvd. Pasadena, CA 91107 USA (626) 796-2628 (626) 796-4875 (800) 325-9465 candhsales@earthlink.net http://www.candhsales.com/ See listing under Retail-Surplus Mechanical. x d $ V CTR Surplus 203288 202 West Livingston Ave. Crestline, OH 44827 USA (419) 683-3535 (419) 683-3230 buy@ctrsurplus.com http://www.ctrsurplus.com/ Surplus electrical: • Computer • Electrical • Fans/blowers • Motors/gearboxes • RF equipment • Test equipment • Power supplies • Optics • Generators x V Dexis Corporation 203597 9749 Hamilton Rd. Eden Prairie, MN 55344 USA (952) 944-7670 (952) 942-9712 info@dexis.com http://www.dexis.com/ Electronics surplus. Test and measurement. Local store in Minnesota. x V EIO.com 203195 P.O. Box 3148 Redondo Beach, CA 90277 USA (310) 217-8021 (310) 217-0950 (800) 543-0540 ecsc@eio.com http://eio.com/ A Web site with lots of information and some sales, too. Surplus stuff, plus lots of links and resources on a num- ber of surplus electronics topics: • Batteries • Capacitors, resistors • CCDs, video • Electro optics, fiber optics, lasers • LCD, LEDs • Microcontrollers • Power supplies • Prototyping • Relays, stepper motors • Robotics • Solar cells • Transformers x V Electro Mavin 202194 2985 E. Harcourt St. Compton, CA 90221 USA (310) 632-9867 (310) 632-3557 (800) 421-2442 john@mavin.com http://mavin.com/ Electronic components, motors, batteries, optics, and test equipment. x V Electronic Dimensions 203424 424 Puyallup Ave. Tacoma, WA 98421 USA (253) 272-1061 (253) 383-2088 eldim@worldnet.att.net http://www.el-dim.com/ Military and industrial surplus, electronics, radio receivers, transmitters and parts, electron tubes, test equipment, and ham gear. x V Electronic Goldmine 202652 P.O. Box 5408 Scottsdale, AZ 85261 USA (480) 451-7454 (480) 661-8259 (800) 445-0697 goldmine-elec@goldmine-elec.com http://www.goldmine-elec.com/ See listing under Retail-General Electronics. x d V Electronic Surplus Co. 203422 9012 Central Ave. SE Albuquerque, NM 87123 USA (505) 296-6389 (505) 296-3922 retail-surplus electronics 511 EIO.com. [...]... 1810 E 12th St Ste C Mishawaka, IN 46 544 USA (21 9) 25 6-1 3 64 (21 9) 25 6-1 21 3 20 2776 522 retail-train & hobby Hobby Club (800) 22 5-6 509 sales@hobbylandinc.com http://e-hobbyland.com/ Hobbies, toys, plastic models Model trains x 20 40 32 P.O.Box 60 04 San Clemente, CA 926 74 USA ( 949 ) 42 5-1 3 62 V ( 949 ) 34 9-0 829 (866) 73 9-5 026 FMA Direct 20 37 72 9607 Dr Perry Rd Unit 109 Ijamsville, MD 21 7 54 USA (301) 83 1-8 980... Rocklin, CA 95765 USA (916) 62 4- 8 333 (916) 62 4- 8 003 (888) 51 2- 1 0 24 info@parallaxinc.com http://www.parallaxinc.com/ See listing under Microcontrollers-Hardware x d V 20 2 149 20 40 72 13 7-0 70, #707 ilkwang Building 165 6 -2 , Seocho-Dong Seocho-Gu Seoul South Korea + 82 2- 5 9 7-8 22 4 + 82 2- 5 9 7-9 44 1 info@roboblock.co.kr http://www.roboblock.com/ Sells Roboblock kits, mobile robot kits, toy robot kits, microcontrollers,... under Kits-Electronic d V Hobby’s 20 3675 Knight’s Hill Square London SE27 0HH UK +44 (0) 20 87 61 42 4 4 +44 (0) 20 87 618796 hobby@hobby.uk.com http://www.hobby.uk.com/ Major Hobby 1 520 B Corona Dr Lake Havasu City, AZ 8 640 3 USA ( 928 ) 85 5-7 901 (800) 62 5-6 7 72 majorhobby@majorhobby.com http://www.majorhobby.com/ x V 20 3965 23 09 North Duck Lake Rd Ste #2 Highland, MI 48 356 USA ( 24 8) 88 9-0 42 0 ( 24 8) 88 9-0 42 0 info@littleshopofhobbies.com... store x 20 21 94 29 85 E Harcourt St Compton, CA 9 022 1 USA (310) 63 2- 9 867 (310) 63 2- 3 557 (800) 42 1 -2 4 42 john@mavin.com http://mavin.com/ d $ V EOL Surplus 20 2670 P.O Box 7 348 Laguna Niguel, CA 926 0 7-7 348 USA ( 949 ) 38 8-1 28 2 ( 949 ) 20 3-8 6 52 http://eolsurplus.com/ EOL offers a good assortment of CNC hardware, including linear bearings, leadscrews, stepper motors Some of their categories useful in robotics... listing under Retail-General Electronics x 20 2186 1016 E Eureka P.O Box 1105 Lima, OH 45 8 02 USA (41 9) 22 7-6 573 (41 9) 22 7-1 313 fairradio@fairradio.com http://www.fairradio.com/ V V EOL Surplus 20 2670 P.O Box 7 348 Laguna Niguel, CA 926 0 7-7 348 USA ( 949 ) 38 8-1 28 2 ( 949 ) 20 3-8 6 52 http://eolsurplus.com/ See listing under Retail-Surplus Mechanical V Fair Radio on the Web Excess Solutions 20 2907 43 0 E Brokaw Rd... Additional sources for hobby parts Supplies-Glues & Adhesives: Special bonding cements Ace Hardware Hobbies 20 4 022 18 54 Magnolia Ave Burlingame, CA 940 10 USA (650) 69 7-3 383 (650) 69 7-6 801 (800) 38 3 -2 657 http://www.ace-hobbies.com/ R/C hobbies, with an emphasis on racing cars x America’s Hobby Center 20 2 728 8300 Tonnelle Ave North Bergen, NJ 07 047 USA (20 1) 66 2- 2 800 (20 1) 66 2- 1 45 0 (800) 24 2- 1 931 questions@ahc1931.com... Products P.O Box 8357 72 Richardson, TX 7508 3-5 7 72 USA (9 72) 42 2- 2 169 (9 72) 51 6-9 527 20 2396 retail-train & hobby 521 DK Models, Inc kggcvp@aol.com http://www.cvpusa.com/ Model railroad: digital command control (DCC) systems Check out their wireless throttle Useful tutorials and how-tos on the site x V Digitrax 20 2397 45 0 Cemetery St., #20 6 Norcross, GA 30071 USA (770) 44 1-7 9 92 (770) 44 1-0 759 sales@digitrax.com... entertainment robots are provided on the site Kits-Robotic: Additional robot kits, mostly toy size Toys -Robot: Robotic toys, either for play or for hacking BBC Robots 20 2 525 http://www.bbc.co.uk/science/robots/ See listing under Robots-Educational Blue Bell Designs Inc P.O Box 44 6 Gwynedd Valley, PA 1 943 7-0 44 6 USA 20 2501 robots-hobby & kit 531 (21 5) 64 3-7 0 12 harry@bluebelldesign.com http://www.bluebelldesign.com/... R/C aircraft; for the roboticist you’ll find servos, drive motors (with and without gearboxes), batteries and chargers, and piezo gyros x V Web home of Hobby Lobby International retail-train & hobby 523 Hobby Maker (586) 75 4- 6 4 12 (586) 75 4- 7 4 02 info@hobbystuffinc.com http://hobbystuffinc.com/ 20 2780 1 42 4 F Airport Fwy Bedford, TX 76 022 USA (817) 26 7-0 991 (817) 68 5-9 27 2 (800) 27 4- 8 076 info@hobbymaker.com... mechanical Gateway Electronics, Inc 20 2185 HGR Industrial Surplus 20 3587 8 123 Page Blvd St Louis, MO 63130 USA (3 14) 42 7-6 116 (3 14) 42 7-3 147 (800) 66 9-5 810 http://www.gatewayelex.com/ 20 001 Euclid Ave Euclid, OH 44 11 7-1 48 0 USA (21 6) 48 6 -4 567 (21 6) 48 6 -4 779 sales@hgrindustrialsurplus.com http://www.hgrindustrialsurplus.com/ See listing under Retail-Surplus Electronics Industrial surplus: electronics, pumps, . Louis Park, Minn.) elec- tronics and mechanical surplus. B. G. Micro 20 221 0 555 N. 5th St. Ste. # 125 Garland, TX 75 040 USA (9 72) 20 5-9 44 7 (9 72) 20 5-9 41 7 (800) 27 6 -2 206 bgmicro@bgmicro.com . Surplus mecha- nisms to go with your surplus electronics A -2 - Z Solutions, Inc. 20 3579 P.O. Box 740 756 Boynton Beach, FL 3 347 4- 0 756 USA (561) 96 7 -4 646 (561) 96 7 -2 5 24 sales@a2z-solutions.com . stepper motors • Robotics • Solar cells • Transformers x V Electro Mavin 20 21 94 29 85 E. Harcourt St. Compton, CA 9 022 1 USA (310) 63 2- 9 867 (310) 63 2- 3 557 (800) 42 1 -2 4 42 john@mavin.com
Ngày đăng: 10/08/2014, 02:20
Xem thêm: Robot Builders Source Book - Gordon McComb Episode 2 Part 4 doc, Robot Builders Source Book - Gordon McComb Episode 2 Part 4 doc
