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WYSIWYG Program for Arduino
(lemmy.world)
Not quite arduino, but Pi Pico can do scratch-like drag n drop coding. https://www.raspberrypi.com/news/drag-n-drop-coding-for-raspberry-pi-pico/
Thanks! I'll check it out
I haven't tried it, but you might look into OpenPLC. Ladder and Function Block Diagram aren't hard to pick up.
All about Arduino boards and programming.