The goal of the PLOT­BOT/CRAWLER re­search pro­ject is to de­vel­op a web-based, sen­sor-guid­ed au­to­ma­ton – a mo­bile robot that can be used to func­tio­n­al­ize build­ing sur­faces via the ap­pli­ca­tion of com­plex lay­er sys­tems. Its thor­ough in­te­gra­tion of tool and soft­ware log­ic al­lows it to be guid­ed over the sur­faces of struc­tu­ral el­e­ments in re­al time, re­gard­less of ge­ome­try, or di­rect­ed to fol­low a pre­pro­grammed pat­tern.