{"id":82354,"date":"2025-01-07T08:56:49","date_gmt":"2025-01-07T13:56:49","guid":{"rendered":"https:\/\/www.engineersgarage.com\/?p=82354"},"modified":"2025-01-07T08:56:49","modified_gmt":"2025-01-07T13:56:49","slug":"arduino-esp32-cam-image-storage-sd-card","status":"publish","type":"post","link":"https:\/\/www.engineersgarage.com\/arduino-esp32-cam-image-storage-sd-card\/","title":{"rendered":"How to capture images using ESP32-CAM and an SD card"},"content":{"rendered":"

The ESP32-CAM is a widely used development board for embedded vision applications. It combines the ESP32 microcontroller with an OV2620 camera module, and the ESP32 itself comes with built-in Wi-Fi and Bluetooth capabilities. Previously, we created a video streaming server<\/a> using the ESP32-CAM<\/a> to troubleshoot potential operational issues with the module.<\/p>\n

In this project, we’ll program the ESP32-CAM to capture still images and store them on a MicroSD card. The module will capture live images whenever the reset button is pressed, offering a simple yet effective solution for capturing images.<\/p>\n

Components<\/strong><\/h3>\n
    \n
  1. ESP32-CAM x1<\/li>\n
  2. Arduino UNO or MEGA x1<\/li>\n
  3. USB cable (to connect Arduino with your computer)<\/li>\n
  4. Jumper wires<\/li>\n<\/ol>\n

    Circuit connections<\/strong><\/h3>\n

    In this project, we use Arduino to upload a sketch to the ESP32-CAM. However, Arduino UNO or MEGA also work.<\/p>\n

    Begin by connecting ESP32-CAM’s GPIO1 (U0_TXD) and GPIO3 (U0_RXD) pins to Arduino’s TX and RX pins, respectively. Next, connect ESP32-CAM’s 5V and ground pins to Arduino’s 5V and GND pins. Also, connect Arduino’s RESET pin to its ground pin.<\/p>\n

    While uploading the sketch, ensure that ESP32-CAM’s GPIO0 pin is connected to its ground pin. After successfully uploading the sketch, be sure to remove the connection between ESP32-CAM’s GPIO0 and ground.<\/p>\n

    Below is the circuit diagram illustrating the connections between Arduino and the ESP32-CAM for uploading the sketch.<\/p>\n

    \"\"<\/a><\/p>\n

    Next, is a circuit diagram that demonstrates the connections between Arduino and the ESP32-CAM. It relates to the camera after the sketch uploaded. Note that the connection between ESP32-CAM’d GPIO0 and ground pins is removed.<\/p>\n

    \"\"<\/a><\/p>\n

    The sketch<\/h3>\n