兰博

ov2640_

Overview

It is based on the OV2640 module of Zhengdian Atom. Because the official OV2640 module of Zhengdian Atom is priced at 118 yuan, and the OV2640 camera on a certain product is only 6 yuan, I tried the board twice intermittently and finally drove the camera for the last time.

In addition, I calculated the material cost. The price of a certain active crystal oscillator is about 2.5, the LDO of X6206 is only a few cents, and the OV2640 is about 6 yuan. With the filter capacitor and pull-up resistor, the total cost is squeezed to about 10 yuan. The OV2640 pull-up resistor does not need to be connected. The development board of Zhengdian Atom has already pulled up the interface internally. I added the pull-up resistor to be compatible with more MCUs and SOCs.

This time I used Zhengdian Atom's LINUX development board STM32MP157 for testing. After a period of modification of the LINUX kernel and device tree, it has been able to run on the MP157 platform.

Attached is a driver demonstration video, because it is not optimized and full screen is not set to ensure smoothness.

Design Files

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Update:2025-05-08 15:18:51

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