Show a light sensor information in a label
In Control Arduino from Java using JArduino post we printed on console the current light intensity coming from a LDR connected to an arduino. In less than a minute I could add it to a label in a JavaFX application, see:
I basically reused the same class from the other post and read the output in a JavaFX thread (see Platform.runLater on the code below).
My plan was to also turn on a LED from the JavaFX application. So let's continue on the original plan.
Controlling a LED and reading a LDR
In the second version I used a chart to display the LDR sensor data in real time and also used a button to control a LED, so when we turn the LED on we can see the values changing.
See our circuit now and notice a LED on digital pin D1:
Now the code on LightSensorApp (which extends JArduino) was modified to include also a LED command. The JavaFX application still look simple, we have a button a chart.
The following video shows it in action:
The code is below and we didn't modify the maven pom.xml, so please check the only two Java files we have in our project.
The code used in these projects are on my github.
You tell me. This is so exciting and my head explode about the possibilities. Think about using API with the great hansolo libraries, such as TilesFX and Medusa. Or about integrating your business process with "things" using the JArduino ethernet integration and jBPM.... The list goes on and on.
NOTE: I know and understand that we have many other modern boards with modern APIs, but arduino is, easy, cheap and popular which makes it really exciting!