This project is an example how to use the tagless final technique to build a set of operations that control an arduino like device using johnny-five-scalajs.

This projects is a scala-js cross project, where the definition of the elements is done in the shared project, and only the js specific parts are done in the js part.

The Parts of the operations that define the programatic structure of the outer combination of elements e.g. wait for an event on the device.

Converts the user-program into a data structure that can be executes using a runner. E.g build a Task or Stream.

The parts that specify the inner semantics of the operations: specify the event is the pressing of a button on the device

Wrapping of inputs and outputs like in https://doc.akka.io/docs/akka-http/current/common/marshalling.html

Interface that needs to be implemented in order to run the dsl programs.

LED Button Demo contains an example where an Arduino with a Button on pin 2 and a LED at pin 10 wil make the LED blink, where the frequency of the blink is determined by the length of a buttonpress.