Getting Started with ESP32-CAM| Uploading Code through Arduino UNO in 5 Minutes

The ESP32CAM is a powerful development board that combines the ESP32 microcontroller with a camera sensor, allowing developers to easily create projects that utilize both WiFi connectivity and image capture. In this guide, we will walk you through the process of getting started with the ESP32CAM and uploading code using an Arduino Uno.

Materials Needed:

ESP32CAM Development Board
Arduino Uno
USB Cable
Breadboard (optional)
Jumper Wires
Step 1: Preparing Your Arduino Uno

Before we can begin uploading code to the ESP32CAM, we need to prepare our Arduino Uno. First, connect your Arduino Uno to your computer using a USB cable. Open the Arduino IDE on your computer and select “Arduino Uno” under the “Tools” “Board” menu. Also, make sure that the correct serial port is selected under the “Tools” “Port” menu.

Step 2: Connecting Your ESP32CAM to the Arduino Uno

Next, we need to connect our ESP32CAM to the Arduino Uno. To do this, we will use jumper wires to connect the following pins on the ESP32CAM to the corresponding pins on the Arduino Uno:

ESP32CAM 5V to Arduino Uno 5V
ESP32CAM GND to Arduino Uno GND
ESP32CAM U0TXD to Arduino Uno RX
ESP32CAM U0RXD to Arduino Uno TX
ESP32CAM IO0 to GND
Note that IO0 needs to be connected to GND to enable the ESP32CAM to enter programming mode.

If you are using a breadboard, you can use it to make the connections easier to manage.

Step 3: Uploading Code to the ESP32CAM

Now that we have our Arduino Uno and ESP32CAM connected, we can begin uploading code to the ESP32CAM. We will use the Arduino IDE to write and upload code to the ESP32CAM.

[norjanahmimbisa]

can you do arduino uno to esp32 cam using blynk app to capture images?

[kamleshkumavat]

How to didn't you solve that BROWNOUT DETECTOR WAS TRIGGERED problem
I am also facing the same issue

[shrijaks]

can you please explain how to enroll face id and detect intruder

[tanimashraf]

Nothing worked until I came across your tutorial. For some reason I had to connect rx to rx and tx to tx, not the vice versa. Now getting response at the serial monitor and at least I know my esp32-cam is not completely dead. However, trying to upload sketch, I'm still getting this:

Board esp32cam (platform esp32, package esp32) is unknown
Error compiling for board AI Thinker ESP32-CAM.

Any idea?
Thank you.