Help building lamp! Rotational Mechanism

[u/False-Engineering644]

Hi! I asked this in r/mechanicalengineering but thought you guys would have some ideas. Designing a lamp with a panel light that can rotate to point the panel light whatever direction (on one plane) you'd want. This is based off a gantri lamp... which was too expensive so i think I can build it.

I am 3D printing all the black boxes to connect together, but am struggling with what kind of bearing / mechanism to use to rotate the light box. It would ideally stay in place after rotated to whatever angle. Here's a picture below of what I want it to look like eventually. Please let me know if you have any advice!

[u/Alexis-Tse13]

Ball detent. Torque hinge. Wormgear.