10/03/2026
For a week, my robot has been living as an expensive paperweight, plugged into a power adapter like it's on a hospital drip. Every test drive came with a cord trailing behind it, which is a real mood-killer for a "presence robot" that is supposed to be present somewhere other than next to an outlet.
This week that changed. Three 18650 cells went into the rover's own battery board; I unplugged it, held my breath, and watched it drive across the living room rug on its own. Freedom. (The cells are genuine Samsung, from a Canadian supplier, which I'm contractually obligated to mention.)
The better story is the controls. I replaced my bash-script-that-curls-JSON driving method with a browser joystick, and the first version had two bugs worth stealing from. Clicking the pad teleported the k**b under my cursor, and the motors don't move below about 30% power, so my fix for that made the rover lurch to a third of full speed the second I touched the stick. The cure was ramping into the dead zone instead of snapping to it. A light switch versus a dimmer. I also gave it an amber phosphor mission-control look, because I was already elbow-deep and regret nothing.
Still no brain in this loop, just a human steering hardware. Next up is the Raspberry Pi 5 and AI camera, which is when this stops being a very good remote-control car.
https://craftymaniac.com/2026/09/ai-rover-off-the-leash/