The Arduino Uno

• Cost: around $20–$30 US
• Connection: USB (as well as other options)
• Various board sizes and processors used
• Inputs / Outputs: 6 analog inputs, 14 digital inputs/outputs
• ADC Resolution: 10 bit
• Power: from USB or external 9 – 12 V supply
• User must buy and design own sensor circuits
• Programmed from a host computer via USB
• Can save settings for “stand alone” mode
• Free open-source software development system available for Windows, OS-X, and Linux
• Programmed using a language called “Wiring”