Arduino can be built with C20/C++20 or C17/C++17 by switching to the latest gcc-arm-none-eabi. Below shows 2 different ways one using arduino-cli and the other using a Makefile included in this repo.
The Arduino Extension is a newly added feature to the OpenPLC editor. With this extension, now you can add Arduino Sketches that will run alongside your PLC program on the same board. #What you can do ...