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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Thijsmans
@Robin
They could most certainly be the heart of a PLC. I guess the problem is that I've got an idea, but not a detailed and solid plan. Neither do I have extensive knowledge about electronics ;-) Especially the modular setup looks complicated... Found this thread about serial communication between Pico's, which could be useful.
@allObjects thanks for the tip!