DENSO's Factory Robots Just Got Free Software That's Easier to Program

A contributor going by "trevisan" has quietly upgraded the free software that makes DENSO robot arms work — the same kind of machines that assemble phones, pack boxes, and weld car parts. The software, called ROS 2, is best thought of as a shared operating system for robots: it lets one program run a camera, a gripper, and a moving arm without anyone starting from scratch. The upgrade is now live on the project's public GitHub page, free for anyone to use.

The biggest change is who can now test a robot without owning one. Gazebo, the software's built-in simulator, runs a virtual robot on an ordinary laptop — so an engineer can crash it a hundred times for free before touching real metal. That used to require the physical machine, which can cost as much as a car. This update moves the simulator to a newer, faster version called Gazebo Fortress, so those practice runs behave more like the real thing.

Concretely, the upgrade adds support for the VS-050 robot arm, allows two VS-050s to run side by side at once — useful when one arm holds a part while another screws it in — and adds a tool called MoveIt Servo that helps a robot adjust mid-motion instead of stopping and starting. It also ships a version built for ROS 2 Jazzy, the newest release of that robot operating system, so the software stays compatible with the latest tools.

The catch: one older robot, the HSR-065, had to be dropped because its digital model kept crashing the simulator. So this is a step forward for some robots, not all. Still, the pattern matters. Every time open-source robot software gets a little easier to use, the cost of automating a small factory or warehouse drops another notch — which tends to show up later in cheaper goods and fewer repetitive jobs.