Is LiDAR or vSLAM better for robot vacuums that run in the dark?

LiDAR beats vSLAM every time — especially when the lights are off. The [Roborock Q](https://www.amazon.com/s?k=Roborock+Q&tag=wehavethat-20)revo's LiDAR works perfectly in pitch black, maps faster, and bumps into fewer things, while the Roomba S9+’s vSLAM camera struggles in low light and takes more tentative paths. If your vacuum runs while you’re asleep or away, LiDAR is the clear winner — it doesn’t need to see to know where it’s going.