Check if OV7670 is broken

Other Hardware Sensors
1

Hi guys,

at the moment I am trying to implement a SCCB communication in order to ajust the settings of my OV7670 camera. Unfortunately I am having big trouble and I don't get a lifesign from my camera. I am assuming that the module is broken somehow. Does anybody know a simple way to determine, if the camera is broken or if it is working? I already tried connecting the camera to the Arduino (3.3V and GND) and a LED to the pixel clock PCLK and the ground. Unfortunately, the LED does not blink as I think it is supposed to be (according to the camera datasheet, since the clock should quickly switch between HIGH and LOW state). Does that necessarily mean that the module is broken?

Thanks in advance.

Best regards
Birk

2

Ok there is no way you are going to see an led blinking at 8mhz that is too fast for your eyes to see. I assume you have read my topic OV7670 with both arduino uno and now mega - Sensors - Arduino Forum It has lots of information. I assume that you are generating the clock using PWM correct? PWM is a good way to generate the PCLK you can easily generate an 8mhz clock with the arduino. Note that the ov7670 will not accept twi/sccb/i2c until you get the clock to it. Also the ov7670 seems to be picky about resistor values try a 10k ohm resistor.

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