Arduino is an free/libre and open-source microcontroller board and an electronics prototyping platform popular in academia as well as in industry. Scilab is an free/libre and open-source, user-friendly, state of the art, computational engine. The Scilab-Arduino interface is devoted to the control of Arduino from Scilab. The interfsce helps the user to perform embedded systems experiments on Arduino board using Scilab code  and also through GUI based simulation environment, Xcos.

Scilab :
Arduino :