I am using an ov7670 camera module and am trying to read the data from eight pins (each represents a bit to make a byte). Just wondering, do I need to use pull-up resistors when I read the data from the arduino (I have wifi, so there could be a bit of electronic noise), or can I attach the camera directly to the arduino inputs?
Good question, indeed. The OV7670 datasheet states 3V for I/O, with a max. of 4.5V. OTOH wiring diagrams typically connect Vcc (5V) to 4-wire modules. There seem to exist various different modules with that camera, do you have a datasheet of your specific module (link)?