VC0706 3.3V Camera - No camera found? Arduino Nano

I can't get it working, i have a VC0706 Camera "VC0706-3-3V-Camera-Module-TTL-UART-Jpeg-CVBS-For-AVR-STM32-Arduino-Compatible"
I had follow all steps from Overview | TTL Serial Camera | Adafruit Learning System, so it works with VC0706CommTool at 115200 bauds but one i try to make it work with snap shot example I just get this response from console when arduino try to locate the camera:

VC0706 Camera snapshot test
No camera found?


I also tried to change baud rate in the code:
if (cam.begin(115200))

I can't find out what is wrong, please what can I do?

This is the instalation:

I'm Still trying but i get nothing
someone know what can i test??
cheers

as discribed at adafruit site, the only baud rate possible is 38400. I suggest to verify before that signal TV is ok and the use common tool as specified. it's just simple.

I did it work for all avaliable bauld rates but not all arduinos suport all speeds

So, did we ever get it to work? What was the problem? I am trying to use the example code given and having no luck. Like you, only the comm tool is working properly...