You may wish or need to modify your NavQPlus to accept additional camera types. This is not difficult, but does require care.
EARLY pre-production version of the NavQPlus shipped with a Google Coral autofocus Camera based on OV5645 image sensor. If you have an innowave OV5645 camera this procedure has already been done on your board.
The Production "RevB version" of the NavQPlus makes a small adjustment to the MIPI CSI Clock line in order to be more compatible with a variety of image sensors. This is also the configuration used with the OV5645 fixed focus image sensors from Innowave that ship with the RevB board As shown in the image below, the resistors R21 and R37 shoudl be 0 Ohm (or solder jumpers) and the resistors R22 and R38 should be removed. (DNP/DNI).
<todo> add more detail
The innowave camera comes pre-installed with the latest revision (2024) of the NavQPlus. It is a fixed focus camera unlike the autofocus google coral camera. The installation and removal is very similar to the the instructions below for the Google coral camera.
The flex cable has marking on it "this side up" that should be visible when looking at the connector side of the board. i.e you can read "this side up" and also read the silkscreen "CSI 1"on the bottom of the board at the same time.
CAUTION! If the Google Coral Camera is connected backwards, it will cause a short circuit and burn out both the MIPI-CSI cable and the sensor in the camera. Please see the images below on how to properly connect the Google Coral Camera to the NavQPlus.
One Google Coral camera is included with most NavQPlus kits. The NavQPlus does support two MIPI-CSI Cameras simultaneously. Additional Google Coral cameras and extended ribbon cables are available from Google, or other retailers.
Pin 1 (P1) on the Google Coral Camera should be connected to the pin with the arrow on the MIPI-CSI port. Please see the images below. The sides with the red box should line up. You should see the blue on the flex cable when connecting to the MIPI-CSI port.
Image reference of how the camera should be connected to the NavQPlus. Please note the orientation of the flex cable. This is very important!
Depending on your kit, there may be a tall or short camera mount included. The short version typically ships with the NavQPlus or drone itself, while a tall version may come with an MR-Buggy3 development kit. Please refer to the image below for information on how to assemble.
The camera mount is provided unassembled.
See drawing PDF below. Note the three three screws (item 10) and nuts (item 8) that connect the inner case (item3) to the camera adapter (item 2). This is a little difficult to see on the drawings.
FYI the camera mount base is designed to be compatible with other off the shelf "action cameras" and uses a #10-32 screw to attach. Other designs, accessories or modifications can easily be 3d printed and adapted.
