The Teensy 2.0 is a fully USB-based microcontroller development system with very small dimensions. All the programming takes place via the USB interface.

No special programming device is required — just a standard mini-B USB cable and a PC or a Macintosh computer with a USB interface.

Main features:

• Can emulate any USB devices
•  AVR processor with 16 MHz
• Single-button programming
• User-friendly Teensy Loader application
• Free software development tools
• Can be used with Mac OS X, Linux and Windows
• Very small size, ideal for many projects

Technical data:

•  Processor: ATMEGA32U4 8 Bit AVR 16 MHz
• Flash memory: 32 KB
• RAM memory: 2.5 KB
• EEPROM: 1 KB
• Digital I/O: 25
• Voltage: 5 V
• Analogue input: 12
• PWM: 7
• USB, SPI, I²C, UART