AllAboutCircuits - This is a fantastic resource for learning about anything to do with circuits. Since I don't know anything, this really helps.
Fingertech Robotics - Great Sumo Bot Kits
SparkFun - one of my favorite electronics sites. They always have new products and great tutorials.
BatchPCB - inexpensive PCB manufacturer (a partner company of SparkFun)
Eagle - A schematic and board layout program, for FREE! Easy to learn, check out SparkFun's tutorials.
All Electronics - a great source of general electrical parts.
Solarbotics -
LittleMachineShop - A great source for all sorts of small machine tooling
Make - Constantly have interesting articles
Model Engines - he makes very beautiful model engines. I wish I had his workshop.
MakeThings
Max's Little Robot Shop - this guy does some very advanced 'home' building. I wish I had his workshop too.
Hobby King - a great source of general hobby parts.
Trossen Robotics
SmallParts - 'The Hardware Store for Researchers and Developers'.
Pololu - Robotics and Electronics
BaneBots - Motors, gearboxes, and wheels
ShaneColton - I'm not easily wowed... but this guy (MITer) does a lot of cool and complex things... I especially like the data he gathers and displays on his custom programs.
OnShoulders - a CNC mill and rapid prototype blog. Puts out videos also.
Jerome - another do-it-yourselfer. Built his own electric scooter
OhBowz - this guy has a lot of good resources and cool projects
Groups
R-Team Robotics Club -
Manufacturing Supplies & Services
Shapeways - this site allows you to upload your 3D models and have them printed! (in metal too!)
MicroRAX - modular frames allow you to create almost anything (check out OhBowz's robo legs)
Ponoko - CNC cut flat wood & plastics
CNC Links
Probotix - a cnc part and kit supplier. Inexpensive full machine available (FireBall)
RepRap - an open source rapid prototyping machine. Site is a little hard to navigate
RepRap Research Foundation
MakerBot
Build Your Own CNC - Great step-by-step instructions
HobbyCNC - one simple board which you solder to control up to 4 stepper motors. Kits available
WinFord - a great source for inexpensive breakout boards. Check out the DB25
Keling Inc - just about any size of stepper motor for cheap. Also sell drivers and full cnc kits
