Hans de Bruin (Ctrl-Alt-Dude) runs an Annin AR4 through a precision task: loading a single slide into a cassette for scanning. The orange AR4-branded cover and workshop instrumentation frame a real lab-style use case beyond generic demos. Strong application clip for the User Builds gallery from a distinct European maker.

Ken Son’s first run of an Annin AR4 tests airflow from a Noctua fan while the orange-and-white labeled arm moves on the bench. A classic commissioning moment from an independent builder—approachable proof that a completed AR4 can go from assembly to useful motion. Strong entry-level showcase for the User Builds hub.

Sami Sattanen’s first AR4 vision test uses a Logitech webcam for pick-and-place on a cutting mat, with candid notes on perspective error and why a farther zoomed camera helps. Custom purple printed cable-management parts personalize a clear Annin AR4. Honest maker debugging content that helps others starting vision on the platform.

After the mechanical assembly series, Yaser Ali Husen shows higher-level use: driving the AR4 MK3 from Python in a chess-robot experiment. Strong software/education angle.

Kat’s Lab begins an AR4 MK4 build on stream/VOD—going through kit parts and making early CAD adjustments before deeper assembly. Useful for builders starting an MK4 kit. Distinct from Chris Annin’s official videos.

Lowrider4sd shows an AR4 MK3 performing identify → sort → stack on mixed blocks. Clean pick-and-place / object-sorting application clip demonstrating perception-plus-motion usefulness.

dedoky put an AR4 to playful real-world use—dispensing full-size chocolate bars for Halloween. It’s a memorable community application that shows the arm outside the lab: event entertainment, timed handoffs, and a crowd-pleasing demo that still reads clearly as an Annin AR4.

RobotJS runs an AR4 through a cup-moving demo that highlights smooth joint motion and end-effector control. The channel also covers AR4 acceleration tuning and JS-oriented robot control, making this a strong application clip for the User Builds gallery.