やっと解決！Arduino Ethernet Shield2（シールド２）通信

Project description

NTP? Network Time Protocol (NTP) is a protocol used to synchronize computer clock times in a network of computers. It is designed to scale to a large number of nodes across a wide area network and provides accuracy of a few milliseconds. It is used in embedded systems to synchronize time across multiple devices, allowing accurate time tracking and automated scheduling of tasks. NTP is used in applications such as remote access, network management, and distributed file systems. Ethernet2 library support W5100, W5200, W5500: https://github.com/arduino-libraries/Ethernet/releases/tag/2.0.0…