![Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More! - Documents - Arduino - element14 Community Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More! - Documents - Arduino - element14 Community](https://community.element14.com/resized-image/__size/900x636/__key/communityserver-wikis-components-files/00-00-00-02-65/0358.contentimage_5F00_112867.jpg)
Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More! - Documents - Arduino - element14 Community
![Arduino Uno Rev 3 Pinout, ATMega168/328 Pin Mapping, Schematics, EAGLE Files, and More! - Documents - Arduino - element14 Community Arduino Uno Rev 3 Pinout, ATMega168/328 Pin Mapping, Schematics, EAGLE Files, and More! - Documents - Arduino - element14 Community](https://community.element14.com/resized-image/__size/629x400/__key/communityserver-wikis-components-files/00-00-00-02-65/7838.contentimage_5F00_112871.jpg)
Arduino Uno Rev 3 Pinout, ATMega168/328 Pin Mapping, Schematics, EAGLE Files, and More! - Documents - Arduino - element14 Community
![How to make use of Interrupts on pins 20 & 21 of a Mega when using an I2c LCD - Project Guidance - Arduino Forum How to make use of Interrupts on pins 20 & 21 of a Mega when using an I2c LCD - Project Guidance - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/a/9/2/a928bd37ef900793b11bba61eafe3f98166a7f12_2_500x355.png)
How to make use of Interrupts on pins 20 & 21 of a Mega when using an I2c LCD - Project Guidance - Arduino Forum
![Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More! - Documents - Arduino - element14 Community Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More! - Documents - Arduino - element14 Community](https://community.element14.com/resized-image/__size/917x604/__key/communityserver-wikis-components-files/00-00-00-02-65/6710.contentimage_5F00_112868.png)