I’m seeking a small camera that can be triggered via GPIO and simply write an image file to an SD card then have that be a available via local network or serial connection.
What is the best solution?
Do you sell camera modules that have SD cards attached?
In fact, the 5MP ov5642 support external trigger mode. You can trigger the four cameras to take pictures at the same time. then read image from them one by one. Which need four GPIO as CS . The ESP8266 does not have so much pins, so you can choose Arducam ESP32 UNO board.
We have not evaluated the specific time. The longest time difference is one frame time. In other words, if the camera is triggered to take pictures at the same time, the resulting image may be one frame different.