I put an Arducam shield with an LCD display, an Arduino Uno (or Mega), and an OV7670 camera together and downloaded the Arducam libraries. I ran the example program for OV7670. The system seems to work. The video started immediately after the program is uploaded to the Uno, and the shutter button is effective in grabbing an image and playing it back. The camera is responding to the objects in the field of view. However, the video and captured image are messy, like snow flakes with certain patterns, and the patterns change with the objects. Any suggestions on how to obtain good images?