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Microcontroller: ATmega1281
Frequency: 14.74 MHz
SRAM: 8 kB
EEPROM: 4 kB
FLASH: 128 kB
SD card: 2 GB
Weight: 20 g
Dimensions: 73.5 x 51 x 13 mm
Temperature range:   [-10 ºC, +65 ºC]
Clock: RTC (32 kHz)

Power consumption

On: 17 mA
Sleep: 30 µA
Deep Sleep:   33 µA
Hibernate:   7 µA

Input / Output

7 analog inputs, 8 digital I/O
2 UARTs, 1 I2C, 1 SPI, 1 USB

Sensors embedded on board

Accelerometer: ±2g/±4g/±8g
    Low power: 0.5 / 1 / 2 / 5 / 10 Hz
    Normal mode: 50 / 100 / 400 / 1000 Hz

Electrical characteristics

Battery voltage: 3.3-4.2 V
USB charging: 5 V - 480 mA
Solar panel load: 6-12 V - 330 mA