Use a logic level translator module or circuit. Google, or search your favourite maker store.
Or, get rid of the UNO completely and run your entire project on the ESP.
if I must use with Arduino uno it ok ?
what should I do , please recommend😅
Give us a link to the ESP32 camera module.
Is it an assignment?
Why are you still asking, when the solution was posted?
The OP may also want another ESP32CAM on hand after applying 5V to the GPIO pins.
Is the OP wanting to use the Uno to program the ESP32CAM?
The OP knows that using GPIO pins 0 and 1 on a Uno can be problematic. Use software serial and set the baud rate to 9600 on both devices.
It looks like the OP is using the programing pins of a ESP32CAM, it's why I inquired about using the Uno as a programmer for the ESP32CAM. If the OP is not using the Uno to program the ESP32CAM and wanting to use serial comms then the OP has attached inputs to the ESP32CAMs programing port.
The OP knows that the Uno is a 5V device and the ESP32CAM is a 3V3 device and that the 5V rest pulse from the Uno may have fried the ESP32CAM?
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