We designed a compact bin arm that works with the LEGO 4432 Garbage Truck set! Convert your existing 4432 Garbage Truck into an automated rear-loader style with a bin arm. : r/lego
Garbage Truck : Set 4432-1 | BrickLink
LEGO Set 4432-1 Garbage Truck (2012 City > Traffic) | Rebrickable - Build with LEGO