Arduino and OV7670 FIFO - tracking project

ov7670 FIFO camera module from ebay, connected to a custom build arduino board based on atmega 328p, basically a “cheap“ version of arduino mini. The module use only 8 digital ports and all analog ports for this, still left available another 6 IO pins... It is able to track 1 color at 30 FPS @ 160 x 120 pixels, output on serial port @ 115.2 kbps. Can also track up to 16 blobs of a selected color @ 15 FPS. Can use any of the OV7670 or OV7725 FIFO modules from ebay or aliexpress. Here is connected through