Features:
- Microcontroller: ATmega328
- Operating voltage: 5 V or 3.3 V (Depends on the model.)
- Supply voltage (recommended): 5-12 V (3.3 V model) or 7-12 V (5 V model)
- Number of digital I/O pins: 14
- Number of PWM pins: 6
- Number of analog input pins: 8
- Max DC current for each I/O pins: 40 mA
- Flash memory: 32 kB (ATmega328, 0.5 kB is used by bootloader)
- SRAM: 2 kB (ATmega328)
- EEPROM: 1kB (ATmega328)
- Clock speed: 16 MHz (5 V model) or 8 MHz (3.3 V model)
- Weight approx 5g
- Size approx 18X33mm
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