So you would like to build your own autonomous mobile robot? The Rosbot Pro Pi has you covered. It is ROS ready and comes bundled with a LiDAR and depth camera. It has max payload capacity of 22 to 45kg. This robot is based on the Raspberry Pi 4. It has 254mm rubber wheels and a battery that lasts up to 4 hours with no load.
This robot comes with Ubuntu, ROS1 and STM32 driver onboard. It can be controlled with iOS and Android devices. You can find out more about it on Robot Shop.