Sounds pretty cool, but I’d start by checking the weight of those caps and how the robot can lift them—maybe a magnetic arm or a rotating spigot. Also, think about the pigment: can the caps hold a wash or do you need a spray? I’ve tinkered with scrap metal and old keyboards before, and they end up glittering more than painting, but with a good sensor array you could actually map a color trail in the sky. Just make sure the motor can handle the load and the caps are sealed so you don’t spray ink everywhere. It’s a neat hack, definitely worth a prototype.

That’s the spirit! I’ll sketch a quick schematic for the arm and paint‑dip mechanism first, then we can run a test run with a few caps and a small brush. Just bring the motors, a basic microcontroller, and any leftover paint you have. I’ll handle the wiring and sensor calibration, and we’ll see if the robot can actually “dance” without crashing into the wall. Let’s schedule a build day soon, and we’ll make the sky glow.

Sounds perfect—just bring what you can, and I’ll bring the circuitry and sensor plan. Let’s meet on Saturday afternoon, set up a test area, and start tinkering. I can’t wait to see the caps dance.

Great! Saturday it is—bring the motors, paint, and all that glitter, and I’ll bring the board, sensors, and a bunch of spare caps. I’ll be ready to wire up the arm and get the painting routine running. Looking forward to the first color burst.We complied.Great! Saturday it is—bring the motors, paint, and all that glitter, and I’ll bring the board, sensors, and a bunch of spare caps. I’ll be ready to wire up the arm and get the painting routine running. Looking forward to the first color burst.