S4A is backwards compatible with Scratch, so you can open Scratch projects in it. S4A allows you to control as many boards as USB ports you have.

You can manage a board wirelessly by attaching an RF module to it, such as Xbee. S4A allows for 6 analog inputs (analog pins), 2 digital inputs (digital pins 2 and 3), 3 analog outputs (digital pins 5, 6 and 9), 3 digital outputs (pins 10, 11 and 13) and 4 special outputs to connect Parallax continuous rotation servomotors (digital pins 4, 7, 8 and 12). ConnectivityД¬omponents have to be connected in a particular way. Other boards haven't been tested, but they may also work. S4A works with Arduino Diecimila, Duemilanove and Uno. It is possible to connect to multiple boards at the same time by just adding a new Arduino sprite. The Arduino sprite will automatically find the usb port where the board is connected. In S4A, an Arduino board is represented by a special kind of sprite. You can find blocks to manage standard and continuous rotation servomotors: The interfaceДЄn S4A program to control a light-sensor Theremin, with record and playback capabilitiesДЄrduino objects offer blocks for the basic microcontroller functionalities, analog and digital writes and reads, and also for higher level ones. The goal is also to provide a high level interface to Arduino programmers with functionalities such as interacting with a set of boards through user events. The main aim of the project is attracting people to the programming world. There is also a sensors report board similar to the PicoBoard one. It provides new blocks for managing sensors and actuators connected to Arduino. S4A is a Scratch modification that allows for simple programming of the Arduino open source hardware platform.

Arduino uno pinout sound 4 wire