Features:
- Microcontroller: ATmega168
- Power Supply: 3.35 -12 V (3.3V model) or 5 – 12 V (5V model)
- Operating Voltage: 3.3V (3.3V model) or 5V (5V model)
- Digital I/O Pins: 14
- PWM Pins: 6
- UART: 1
- SPI: 1
- I2C: 1
- Analog Input Pins: 6
- External Interrupts: 2
- DC Current per I/O Pin: 40 mA
- Flash Memory: 16KB of which 2 KB used by bootloader
- SRAM: 1 KB
- EEPROM: 512 bytes
- Clock Speed: 16 MHz
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