![]() read Arduino GPIO pin voltages (=binary or analog data from sensors) and visualize them in the Processing GUI or create an input control in Processing that sends data to a pin on the Arduino for controlling an actuator. By using the StandardFirmata sketch on the Arduino and the Processing Arduino Firmata library in Processing, it is possible to read and write pins via the USB connection from the Processing sketch. A minimal Processing sketch that acts on mouse input can look like this:Ī simple solution for interaction between a Processing sketch and the I/O pins of an Ardunio board is to use serial communication with the Firmata protocol over USB. The Processing IDE is very light-weight and can be downloaded for Mac, Windows and Linux from .Ī typical Processing sketch has a setup() method where you initialize your program, and a draw() method that is called repeatedly when the GUI is rendered and updated. I really like this approach as it kickstarts you into learning by doing. To learn more, the Processing IDE has a set of examples included that can be browsed, launched and modified from within the IDE. It provides a very easy-to-get-started introduction to the subject. ![]() ![]() ![]() I started out with a book by the Processing project founders: Make: Getting Started with Processing In this post I will connect a Processing sketch with an Arduino for the purpose of visualizing the input and output pins of the hardware board with graphics in Processing. Wiring and the Arduino IDE are spin-offs from Processing and there are many cool things happening in the JavaScript version of Processing, p5.js (more about this in an upcoming post). ![]() The community is very active and there are tons of useful contributed libraries. It can be used for teaching programming, making prototypes, creating art experiments or just generating crazy visual stuff in general. Processing is an open-source IDE with a Java-based programming language that is aimed at lowering the learning threshold for interactive graphics creation. ![]()
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February 2023
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