M5Stack ESP32 PSRAM Timer Camera X (OV3660) Documentation
The M5Stack ESP32 PSRAM Timer Camera X (OV3660) is a versatile IoT component that integrates an ESP32 microcontroller, 4MB of PSRAM, a timer, and an OV3660 camera module. This device is ideal for various IoT applications, such as robotics, computer vision, and automation, that require image processing and wireless communication.
ESP32 microcontroller with Wi-Fi and Bluetooth capabilities
4MB of PSRAM for storing images and data
OV3660 camera module with a maximum resolution of 2048x1536 pixels
Timer for scheduling tasks and capturing images at regular intervals
MicroSD card slot for storing images and data
USB-C interface for programming and power supply
Software Libraries and Frameworks
To program the M5Stack ESP32 PSRAM Timer Camera X (OV3660), you can use the following software libraries and frameworks:
Arduino IDE with the ESP32 board package
MicroPython with the M5Stack library
ESP-IDF with the OV3660 camera driver
### Example 1: Capturing and Saving Images to MicroSD Card using Arduino
This example demonstrates how to capture images using the OV3660 camera module and save them to a microSD card using the Arduino IDE.
```c
#include <M5Stack.h>
#include <WiFi.h>
#include <SD.h>
void setup() {
myM5Stack.begin();
Serial.begin(115200);
// Initialize the camera
camera_init();
// Initialize the microSD card
if (!SD.begin()) {
Serial.println("Failed to initialize microSD card");
while (1);
}
}
void loop() {
// Capture an image
camera_fb_t fb = esp_camera_fb_get();
if (!fb) {
Serial.println("Failed to capture image");
return;
}
// Save the image to the microSD card
String filename = "/IMG_" + String(millis()) + ".jpg";
File file = SD.open(filename, FILE_WRITE);
if (!file) {
Serial.println("Failed to open file for writing");
return;
}
file.write(fb->buf, fb->len);
file.close();
Serial.println("Image saved to microSD card: " + filename);
// Release the camera buffer
esp_camera_fb_return(fb);
delay(10000); // Capture an image every 10 seconds
}
```
### Example 2: Streaming Video using MicroPython
This example demonstrates how to stream video from the OV3660 camera module using MicroPython and the M5Stack library.
```python
import machine
import uos
import m5stack
import wifi_manager
# Initialize the camera
machine.CAMERA.init()
# Connect to a Wi-Fi network
wifi_manager.connect_to_wifi("your_wifi_ssid", "your_wifi_password")
# Create a socket for streaming video
sock = machine.Socket(machine.AF_INET, machine.SOCK_STREAM)
# Set up the streaming server
server_address = ("0.0.0.0", 8080)
sock.bind(server_address)
sock.listen(1)
print("Streaming server started at http://your_device_ip:8080/")
while True:
# Accept an incoming connection
client, address = sock.accept()
print("Connected by", address)
# Send the video stream
while True:
frame = machine.CAMERA.capture()
client.sendall(frame)
```
### Example 3: Scheduling Image Capture using Timer
This example demonstrates how to schedule image capture using the timer on the M5Stack ESP32 PSRAM Timer Camera X (OV3660). The example uses the ESP-IDF framework and the OV3660 camera driver.
```c
#include <string.h>
#include <esp_system.h>
#include <esp_timer.h>
#include <esp_camera.h>
#define TIMER_PERIOD 10000000 // 10 seconds
static void capture_image(void arg) {
// Capture an image
camera_fb_t fb = esp_camera_fb_get();
if (!fb) {
printf("Failed to capture image
");
return;
}
// Save the image to a file
FILE file = fopen("/sdcard/image.jpg", "wb");
if (!file) {
printf("Failed to open file for writing
");
esp_camera_fb_return(fb);
return;
}
fwrite(fb->buf, fb->len, 1, file);
fclose(file);
printf("Image saved to /sdcard/image.jpg
");
// Release the camera buffer
esp_camera_fb_return(fb);
}
void app_main() {
// Initialize the camera
camera_config_t camera_config = {};
camera_config.ledc_timer = LEDC_TIMER_0;
camera_config.ledc_channel = LEDC_CHANNEL_0;
camera_config.pin_xclk = 32;
camera_config.pin_pclk = 34;
camera_config.pin_vsync = 35;
camera_config.pin_href = 36;
camera_config.xclk_freq_hz = 20000000;
camera_config.pixel_format = PIXFORMAT_JPEG;
esp_err_t err = esp_camera_init(&camera_config);
if (err != ESP_OK) {
printf("Failed to initialize camera
");
return;
}
// Create a timer for scheduling image capture
const esp_timer_create_args_t timer_args = {
.callback = &capture_image,
.arg = NULL,
.name = "image_capture_timer"
};
esp_timer_handle_t timer;
err = esp_timer_create(&timer_args, &timer);
if (err != ESP_OK) {
printf("Failed to create timer
");
return;
}
// Start the timer
err = esp_timer_start_PERIODIC(timer, TIMER_PERIOD);
if (err != ESP_OK) {
printf("Failed to start timer
");
return;
}
}
```
These code examples demonstrate the capabilities of the M5Stack ESP32 PSRAM Timer Camera X (OV3660) component and provide a foundation for developing various IoT applications.
