Sumo and Differential Drive Robot Vendors

• http://www.solarbotics.com/
• http://www.hobbyengineering.com/
• http://www.lynxmotion.com
• http://www.roguerobotics.com
• http://www.acroname.com (various hardware of ours came from here
• http://www.budgetrobotics.com (various hardware of ours came from here)
• http://www.mrrobot.com
• http://www.parallax.com
• http://www.junun.org/MarkIII/Store.jsp
• http://www.basicx.com/
• http://k-team.com/robots/khepera/
• http://www.superdroidrobots.com/
• http://www.active-robots.com
• http://www.zagrosrobotics.com/
• http://www.joker-robotics.com/eyebot/
• http://www.roboticsconnection.com/

Cameras

• http://www.acroname.com
• http://seattlerobotics.com/
• http://www.jrobot.net/ is working on an open camera spec similar to the CMUCam2. Nifty!

Wheel Vendors

• http://www.basicx.com
• http://www.budgetrobotics.com
• http://www.acroname.com
• http://www.active-robots.com

Gripper Vendors

• http://www.robodyssey.com/catalog/Mech/NGripwServo.htm
• http://www.imagesco.com/catalog/robot/gripper.html
• http://www.mciirobot.com/product/detail/GRP01.htm
• http://www.grippers.com/default.htm (Industrial)
• http://www.parallax.com/detail.asp?product_id=28200
• http://scmstore.com/english/robotic/griper/default.asp

Microswitch Vendors

• http://www.wicothesource.com/new2/pages/page23.htm (The Cherry Switch is $2)
• http://www.pinballuniverse.com/PinballSwitch.htm
• http://www.lakesidepinballparts.com/switch.html

Encoder Options

• http://acroname.com/robotics/parts/c_Sensors.html
• http://www.nubotics.com
• http://www.seattlerobotics.org/encoder/200010/dead_reckoning_article.html describes how to make your own encoders.
• http://epl.harvard.edu/Engineering/encoderdisk.html describes how to print out encoder disks using a simple PostScript program.

LCD Screens

• http://www.matrixorbital.com sells a variety of LCD and PLED screens that run both I2C and Serial.
• Devantech makes a few I2C/Serial LCD screens, sold through Acroname
• Serial only $40 16x2: http://www.basicx.com/Products/SLCD/2X16LCDoverview.htm

Microcontrollers

• Acroname's Brainstem GP http://acroname.com/robotics/parts/S1-GP-BRD.html is our first choice. 4 servos, 5 analog, 5 digital, $80
• Botrics' Cerebellum: http://www.botrics.com/products/cereb/ is an alternative. 8 servos, 10 digital, 8 analog, 2 motors, $100
• http://www.gumstix.com/ (also will soon be selling the "robostix")
• Crossbow Stargate http://xbow.com/Products/productsdetails.aspx?sid=72
• Handyboard and Cricket http://handyboard.com/
• http://www.charmedlabs.com/xport.htm (note that the nonprofit organization KIPR http://www.kipr.org/ has created a heavily modified version of the XPort which includes a camera and lots of niceties -- and runs Interactive C like the Handyboard -- for about $400).
• http://www.parallax.com/ (Basic Stamp, Javelin)
• http://www.oopic.com/
• http://www.legomindstorms.com/ (the infamous RCX)