More information:https://hackaday.io/project/163542-esp32-wifi-robot
The code is on Github:https://github.com/CoretechR/ESP32-WiFi-Robot/tree/master
Video:https://www.youtube.com/watch?v=NSowf_ctzAw

The ESP32 WiFi robot is a scaled-down version of ZeroBot.https://www.thingiverse.com/thing:2800717)。It uses the equally popular ESP32, rather than the Raspberry Pi. Despite its lower processing power, the ESP32 robot has many features. It can transmit color video in real time via WiFi, is powered by a small lithium battery, and can be precisely controlled via any web browser. It's also very affordable, with an ESP32 costing 4 euros and a camera costing 3 euros.

Print the two shells facing the print bed. You'll need to use a lot of support material. Simplify3D works best for this, but Slic3r or Cura with optimized settings can also do the job. I mostly use low-density support material, and then switch to high-density support material for the last 8 layers. This saves a lot of consumables.