![arduino nano - Why are the pin numbers of the diagrams and of the code different? - Arduino Stack Exchange arduino nano - Why are the pin numbers of the diagrams and of the code different? - Arduino Stack Exchange](https://i.stack.imgur.com/ICuN3.png)
arduino nano - Why are the pin numbers of the diagrams and of the code different? - Arduino Stack Exchange
![Amazon.com: HiLetgo 3pcs Nano V3.0 ATmega328P CH340G 5V 16M Mini USB Micro Controller Board Development Board with PIN Headers Pin Unsoldered : Electronics Amazon.com: HiLetgo 3pcs Nano V3.0 ATmega328P CH340G 5V 16M Mini USB Micro Controller Board Development Board with PIN Headers Pin Unsoldered : Electronics](https://m.media-amazon.com/images/I/61Rr2SiV22L._AC_UF894,1000_QL80_.jpg)
Amazon.com: HiLetgo 3pcs Nano V3.0 ATmega328P CH340G 5V 16M Mini USB Micro Controller Board Development Board with PIN Headers Pin Unsoldered : Electronics
![Arduino Nano Pin Layout In this system we have use the Arduino Nano 3.0... | Download Scientific Diagram Arduino Nano Pin Layout In this system we have use the Arduino Nano 3.0... | Download Scientific Diagram](https://www.researchgate.net/profile/Akshay-Deshmukh-3/publication/313109815/figure/fig1/AS:829159718805504@1574698490125/Arduino-Nano-Pin-Layout-In-this-system-we-have-use-the-Arduino-Nano-30-which-is-a-30-pin_Q320.jpg)
Arduino Nano Pin Layout In this system we have use the Arduino Nano 3.0... | Download Scientific Diagram
![I2C SDA line is connected to a wrong Arduino Nano pin · Issue #1 · beast-devices/TougherPowerMonitor-HW · GitHub I2C SDA line is connected to a wrong Arduino Nano pin · Issue #1 · beast-devices/TougherPowerMonitor-HW · GitHub](https://user-images.githubusercontent.com/8793368/113478022-7edeef00-9486-11eb-92a7-4afc5e9e1823.png)