DFRobot - This is an ESP32-based 1s 85mm mini quad. It is controlled over the phone via Bluetooth. The actual motor holes are for 8.5x20mm motors but an external adapter is added
Low Cost Drone Powered by ESP32 CAM - Electronics For You
Esp32-Cam Drone : r/esp32
ESP32 Quadcopter | Details | Hackaday.io
Make ESP8266 Drone (This Drone Can Climb on Wall) – DIY Projects Lab
Hackhawk Mark III: ESP32 TinyPICO as a brushless flight controller - Blogs - diydrones