![Amazon.com: Nano V3.0, Nano Board ATmega328P 5V 16M Micro-Controller Board Compatible with Arduino IDE (Nano x 3 with USB Cable) : Electronics Amazon.com: Nano V3.0, Nano Board ATmega328P 5V 16M Micro-Controller Board Compatible with Arduino IDE (Nano x 3 with USB Cable) : Electronics](https://m.media-amazon.com/images/I/81XOyyGywEL.jpg)
Amazon.com: Nano V3.0, Nano Board ATmega328P 5V 16M Micro-Controller Board Compatible with Arduino IDE (Nano x 3 with USB Cable) : Electronics
![atmega - Can I use ATmega328 TX/RX pins to drive an R2R network and still use the serial port to program the MCU? - Electrical Engineering Stack Exchange atmega - Can I use ATmega328 TX/RX pins to drive an R2R network and still use the serial port to program the MCU? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/UDFeY.png)
atmega - Can I use ATmega328 TX/RX pins to drive an R2R network and still use the serial port to program the MCU? - Electrical Engineering Stack Exchange
![Standalone Arduino with ATMEGA328P / Serial working, but serial programming not (only once after buning bootloader) - Arduino Stack Exchange Standalone Arduino with ATMEGA328P / Serial working, but serial programming not (only once after buning bootloader) - Arduino Stack Exchange](https://i.stack.imgur.com/87HhA.png)
Standalone Arduino with ATMEGA328P / Serial working, but serial programming not (only once after buning bootloader) - Arduino Stack Exchange
![Keyestudio Max Board Main Control IC Atmega328p CP2102 USB To Serial Port Module For Arduino STEAM DIY Electronic Kit - AliExpress Keyestudio Max Board Main Control IC Atmega328p CP2102 USB To Serial Port Module For Arduino STEAM DIY Electronic Kit - AliExpress](https://ae01.alicdn.com/kf/S07c6cbc8148b474caf1c5eb2ff9c02b7q/Keyestudio-Max-Board-Main-Control-IC-Atmega328p-CP2102-USB-To-Serial-Port-Module-For-Arduino-STEAM.jpg_.webp)
Keyestudio Max Board Main Control IC Atmega328p CP2102 USB To Serial Port Module For Arduino STEAM DIY Electronic Kit - AliExpress
![ATMEGA328P with Arduino IDE: Serial communication doesn't work in combination with delay()-function | AVR Freaks ATMEGA328P with Arduino IDE: Serial communication doesn't work in combination with delay()-function | AVR Freaks](https://www.avrfreaks.net/sites/default/files/Breadboard%20Only%20ATMEGA%20big.png)
ATMEGA328P with Arduino IDE: Serial communication doesn't work in combination with delay()-function | AVR Freaks
![arduino - Olimex/ATMega328 Reading from UART and sending to USB - Electrical Engineering Stack Exchange arduino - Olimex/ATMega328 Reading from UART and sending to USB - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/elmXx.jpg)