\documentclass[pstricks]{standalone}

\usepackage{pst-fourbarlinkage,multido}


\begin{document}
\multido{\i=0+10}{37}{
\begin{pspicture}(-5,-10)(15,11) % class 14
\psFourBarLinkage[unit=1.5,barlengths=14 12 10 16,crossed,N=\i,connectedpoints,centrodes,fixedcentrodes,dmax=20,posM=0.5 3] % classe 14
\end{pspicture}}
\end{document}



