Nano V3.0 Board for Arduino Emith CH340/ATmega328P Nano V3.0 3 Pack Windows Driver Easy to Install
Low power consumption.
Header pins are not soldered yet.
Input and Output
Each digital pin can be used with pinMode, digitalWrite, and digitalRead, as an input or output.
Some pins have special features: serial:0(RX) and 1(TX). Used for receiving and transmitting TTL serial data (RX)
It is also connected to the corresponding pin of the CH340G USB chip.
External Interrupts: 2 and 3
PWM: 3, 5, 6, 9, 10, and 11
SPI Communications: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK)