I needed to get a log of actions and readings the arduino took as well as being able to interactively program the arduino from nodejs. I therefore put together this code to control the arduino ...

The two broad camps are binary and text-based data. JSON is a text-based format, so it is readable by both people and machines. JSON is a wildly successful way of formatting data for several reasons.

As just noted in my article about LILYGO T-32C3 module, the ESP32 Arduino 2.0.0 release happened a few days ago adding ... to the list of additional board manager JSON files in preferences. then ...