Digilent Pcam 5C 410-358 Referenzhandbuch - Seite 6

Blättern Sie online oder laden Sie pdf Referenzhandbuch für Kontrolleinheit Digilent Pcam 5C 410-358 herunter. Digilent Pcam 5C 410-358 8 Seiten. Imaging module

Seite drucken

The Xilinx SDK source code for the Pcam 5C demo project described in the Software Support

Section contains most of the practical information about what registers need to be written at what

time in order to use the Pcam 5C. It can be referred to as well if the more detailed information in the

datasheet is not required.

FFC Attachment

The Pcam 5C is connected to a host board via a 15-pin FFC. It ships with 10 cm cable that is pre-

attached to the FFC connector on the module. If the cable is detached from the Pcam 5C for any

reason, it will need to be reinstalled. This can be done as follows:

1. Locate the 15-pin FFC connector on the bottom side of the Pcam 5C.

2. Pull the black plastic tab on the edge of the connector out, away from the opening of the

connector. This opens the connector.

3. Insert the FFC with the contacts facing up, toward the Pcam 5C PCB. The blue side (without

contacts exposed) should be facing down.

4. Ensure the FFC is fully inserted.

5. Gently press both sides of the black plastic tab back towards the rest of the connector to

latch the FFC in.

6. Test the FFC is securely fastened by ensuring that both sides of the black plastic tab are

touching the white part of the connector. Then gently tug on the FFC to ensure it is not loose.

7. The FFC is now connected properly.

For information on how to attach the other side of the FFC to a host board, see the Pcam section of

the board's reference manual.

Lens Adjustment

The lens solution provided on the Pcam 5C includes an M12 Lens mount and a factory-installed

manual focus lens with lens cap. The lens focus is adjusted by twisting it either clockwise or counter-

clockwise.

It is possible to adjust the focus of the lens to a point that will cause most objects to be in focus, as

long as they are not very close to the lens. This can be accomplished in practice by running the

Pcam 5C demo project, and then adjusting the focus of the lens until an object several feet away

looks very clear and sharp. The lens should not need to be adjusted further, unless an object close

to the Pcam 5C needs to be focused on.

For complete optical characteristics of the lens included with the Pcam 5C, please refer to its

datasheet. The mechanical dimensions of the M12 lens mount are available in its datasheet as well.

It is also possible to replace the included lens with a different M12 lens. Many suitable M12 lenses

with a range of unique characteristics are available for sale from third-party vendors. Care should be

taken when choosing a third party lens to ensure it is appropriate to use with the OV5640 image

sensor and the Pcam 5C lens mount. Some longer lenses may make contact with the image sensor

if over tightened, which could cause damage.