Note collection
\documentclass{standalone} \title{robotics collection}
\usepackage{graphbox}
\begin{document}
\includegraphics[height=6cm]{iceberg19 schaltplan bodensensor} \hspace{1em}
\includegraphics[height=6cm]{iceberg18 pcb main} \hspace{1em}
\includegraphics[height=6cm]{iceberg18 drawing cropped} \hspace{1em}
\includegraphics[height=6cm]{iceberg18 drawing birds eye}
\end{document}