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Nano 3.0
This example is a clone with a CH340G USB UART. The clones are very cheap and are all 3.0 compatible with the ATMEGA328P.
Pinout
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D1 TX 1| PD0 |30 VIN
D0 RX 2| PD1 |29 GND
RESET 3| |28 RESET
GND 4| |27 5V
D2 INT0 5| PD2 ADC7 |26 A7
D3 INT1 6| PD3 ADC6 |25 A6
D4 7| PD4 PC5 |24 A5 SCL
D5 8| PD5 PC4 |23 A4 SDA
D6 9| PD6 PC3 |22 A3
D7 10| PD7 PC2 |21 A2
D8 11| PB0 PC1 |20 A1
D9 12| PB1 PC0 |19 A0
D10 SS 13| PB2 |18 AREF
D11 MOSI 14| PB3 |17 3V3
D12 MISO 15| PB4 PB5 |16 D13 LED SCK
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