UNO R3

Microcontroller Board

Microcontroller ATmega328P-AU

Operating Voltage 5V

Input Voltage (recommended) 7-12V

Input Voltage (limits) 6-20V

Digital I/O Pins 14 (of which 6 provide PWM output)

Analog Input Pins 6

DC Current per I/O Pin 40 mA

DC Current for 3.3V Pin 50 mA

Flash Memory 32 KB of which 0.5 KB used by bootloader

SRAM 2 KB

EEPROM 1 KB

Clock Speed 16 MHz

DHT 11

Humidity & Temperature Sensor

Measurement Range 20-90%RH 0-50 ℃

Humidity Accuracy ±5％RH

Temperature Accuracy ±2℃

Power Supply (DC) 3-5.5V

Current Supply 0.5-2.5mA

Sampling period (seconds)1