Some sensors

• Hacking a Motion Sensor - for those cheap motion sensors you get in security lights
• All kinds of sensor info
• Acroname - They carry some nice H-bridge chips, among other things
• Steadlands - They make force-sensitive resistors and much more.
• Tekscan/Flexiforce - more force-sensitive resistors
• ePanorama - A list of links to all things electronic. Excellent resource.
• Flexpoint - Resistive flex sensor manufacturer
• Interlink Electronics - They also make FSR's, but you'll have a hard time getting them to admit it.
• Lego Mindstorms - using and hacking their sensors
• Measurement Specialists, Inc. - They make piezoelectric sensors, which Digikey sells.
• VoiceDirect Speech Recognition kit - embedded speech recognition
• NEW: 3D Motion Sensor
• DC Capacitive Proximity Sensors
• Home Page
• Comparing Touchscreen Technologies
• Product Information
• Quantum QT60320 Series Matrix IC
• NetMotion, Inc. is a semiconductor/fabs/clean...
• Basic triac circuit
• Information Environments and Tangible Media

Brain-activated sensor systems

• Brainfingers - brain-activated screen control
• IBVA - another brain-activated controller