How to assemble a PiCAM
d. Attach the battery connector. If possible, pull about 1/2 of the bare wire through the board, which will be used to attach to the USB pad on the Nordic dongle. The ground should go through from the chip side on pad 1 and the positive wire should be looped from the bottom through holes 2 and 3 and back down so that both wires extend out of the bottom of the board.
e. Connect the Pi and I2C power wires; The Pi positive connects to pad 6 and the I2C positive to pad 8, while both ground simply connects to the extended ground wire.
a. Connect V+ and ground to the USB pads. Note that the positive pad has the square test point next to it.
b. Connect the control lines from the power board to the dongle: Pad 4 to pin 0.20 and Pad 5 to pin 0.17
4. Connect serial lines for the Pi to the dongle on 0.13 (yellow) and 0.15 (blue) and I2C lines on 0.29 (blue) and 0.31 (yellow).
a. Feed the battery connector through the bottom hole and tuck the nrf52840 dongle into the half D-ell. The power/regulator board should be on the bottom, tucked underneath the overhang, with the battery wire running just above the regulator through the thinner section of the bottom opening. Tuck the I2C cable behind the dongle as it is moved into space.
b. Gently, push the dongle down until the J-link connector can slide into the opening in the side of the case. It should pop in without much force; be careful not to crush the power board/regulator. Once the connection is in place, push down on the end of the dongle at the top of the case (where it is 'Nordict") to snap it into place.
c. Snap the Pi into the other half of the case. It needs to go in flat to avoid catching on the edges. If it is not sitting flush, try to realign it rather than using more force.
9. Attach the camera and GPS modules to the cam/GPS mount using M2 screws and washers on at the camera module. (The GPS module has pads very close to the screw holes, which could make washers risky depending on their diameter).
a. Unscrew the bottom and remove the base. Pull out the battery spring (needle nose pliers help) and spare bulb.
c. Place the new window into the front section of the top and put the round o-ring on top of it. Then, screw the back half on so that it seals against the o-ring.
Option 1: If the camera housing has a large enough opening. it may be possible to slide the camera ribbon cable through while attached to the Pi. In this case, it's easy to feed the ribbon cable and I2C cable by tapping them together. Having the I2C cable attached also provides some tension to make positioning the ribbon cable easier.
Option 2: If the opening is too narrow to easily slide the cable though, the ribbon cable can be pushed through from the top, then attached to the Pi.
Note: This is the last opportunity to access the J-lin connector and upload firmware without disconnecting the ribbon and I2C cables!
12. Slide the D-cell case into the camera body, Gently 'pull' (more so allow it to move freely) the two cables from the front of the camera to ensure that they do not get tangled/crumpled above the D-cell case.
14. Insert the camera/GPS assembly. Place a desiccant packet under the GPS module and slide the assembly into place. (The bottom is keyed to lock into the bottom of the body opening and keep the assembly straight). Then screw on the front.
15. Finally, connect the battery pack and slide it into the camera body below the D-cell case. There should be space for the battery connector and any excess writing around the slide of the battery pack. Avoid bunching up wiring above or below the pack as damaged insulation there could allow a short to one of the battery terminals.
