11. Input and Output
Sense Sensor Actuator
Sight Light, camera, color, IR LEDs, displays, lights
Touch Buttons, pressure, rotation, Stepper motors, servo motors, DC
temperature, bend motors
Hearing Microphone, ultrasound Speakers
Smell Gas sensors, artificial noses Fragrance emitters
Taste Artificial tongues Flavor emitters
Also... RFID, GPS, accelerometers, compass Wireless communication
12. Arduino Community
International (distributors in U.S.A., U.K., Italy,
Sweden, Russia, India, China, Japan, etc.)
Large (the forum has over 100,000 posts)
In lots of organizations (Arduino is used at IDEO,
Rockwell Group, MIT, Stanford, CMU, etc.)