A firmware for connecting the ESP32 Cam to an EZ-Robot EZB v4 camera port. Use the wiring schematic below to connect the ESP32 to the EZ-Robot EZ-B v4 or IoTiny ESP32          EZB v4 UART 0 TX  Camera RX Pin 2            Camera RTS GND            GND 3.3v            3.3v
My ESP32 CAM is working well with my webserver file
I added you zip file When I try to compile your file all I get is:
#include "src/OV2640.h" ^~~~~~~~~~~~~~ compilation terminated. exit status 1 src/OV2640.h: No such file or directory
You will have to follow the instructions: https://synthiam.com/Support/Hardware/ESP32-Cam
followed the instructions, uploaded fine, (to the hard reset point) all good
next thing to solve is the 4 wires to fit into the EZB4 or IOTing controller
I only have Breadboard Jumper Wires here at the farm
I will check when I get home from the farm for thinner wires or something else
what wires do you use?