PCB versions, pictures and pinouts - daniel-dona/beken7252-opencam GitHub Wiki

A9_B / V1.3_220516

PCB front side (chip)

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PCB back side (camera module)

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Unidentified camera module (maybe HI704 based on original firmware logs)

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Module pinout

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(Preliminary pinout traced, 18 pin module, right to left)

1 -> VCC (3.3v)
2 -> I2C SDA
3 -> I2C SCL
4 -> P28
5 -> P39
6 -> P38
7 -> P37
8 -> P36
9 -> P35
10 -> P34
11 -> P31
12 -> P30
13 -> P27
14 -> GND (?)
15 -> P29
16 -> GND (?)
17 -> P32
18 -> P33

JC_V9_V3B / 20230809DF

PCB front side (chip)

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PCB back side (camera module)

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BMY_A9_V3A / 20230627DF

Pretty much the same PCB but the battery management is done by an external IC and not the BK7252.

PCB front side (chip)

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PCB back side (camera module)

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If you a camera with a BK7252 chip that is different to the documented ones, even if its not a "A9 camera", please open a ticket and attach pictures of both sides of the PCB.