Configure the camera setting You need to modify the memorysaver.h file in order to enable OV2640_MINI_2MP or OV5642_MINI_5MP_PLUS or OV5640_MINI_5MP_PLUS camera modules.
Only one camera can be enabled at a time.The memorysaver.h file is under the ArduCAM libraries of Arduino directory in order to be recognized by the Arduino IDE.After that open the Arduino IDE,Select Arduino/Genuino Uno board from
Tools->Board menu.
Select the example from File->Examples->ArduCAM->mini->ArduCAM_Mini_Video_Streaming and upload it.

Open ArduCAM_Host_V2.0_Windows Host app.
(Arduino\libraries\ArduCAM\examples\host_app\ArduCAM_Host_V2.0_Windows).
For more information about ArduCAM library, please refer to:http://www.arducam.com/downloads/shields/ArduCAM_Camera_Shield_Software_Application_Note.pdf