I am trying to program an esp32 cam with arduino uno but it's not uploading code and showing error message "a fatel error occured failed to connect to esp32 :no serial data received " i am wondering what may be the cause. I am trying to program esp32 cam through arduino uno board for a sample webserver program.i configured the arduino ide by following steps. 1downloading espressif esp32 package in board manager-- (The package site :- raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/… ).2 using esp32wrover model board 3. Flash mode qio 4.partition scheme huge app 5.flash frequency 40 6. Upload speed 115200 .7 programmer estopol . Program is sample webserver program from arduino ide example sketches. Pressed the reset button after uploading the the code . pins:- Website
Esp32 5v to arduino 5v . Reset to grnd in arduino .uor to Rx . Uot to tx . Ground in esp to ground in arduino –
An ESP32 is a 3.3V device, an UNO is a 5V device. Connecting the signals directly may fry the ESP32.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.