Integrated subsystems through CAD by aligning interface PCB and power step-down PCB to fit within enclosure constraints. Imported EPC660 chip footprint to verify clearance and added overlooked components to complete final design of all PCBs.
Pictures:
Top view and cross-section of the camera module. The waterproof enclosure (in red) is a spare part borrowed from TartanAUV. The camera board designed by Claire and Gleb is in green. The power board designed by Sid is not pictured, but will fit in the empty space beneath the camera board.
Note the nano-fit and JST connectors on the PCB, as well as a cut-out for cable routing. The large black nut on the side is a penetrator used for passing cables through a water-proof enclosure.
Isometric view and cross-section of the illumination module designed by Gleb. The outer board is contains the constant-current drivers and an LDO, and is a regular 2-layer FR4-based PCB. The inner board is an aluminum-core PCB that contains 4 modulation loops with two LEDs each. An aluminum-core PCB will remove the heat from the LEDs much more efficiently than regular fiberglass. Note that the entire assembly is mounted on an aluminum backplate, which will be machined on a lathe in TechSpark. This backplate contains a protruded cylinder in the center, to which the LED board will be attached with thermal paste. This will create a direct heat conduction path from LEDs to the outside water, ensuring effective cooling. The boards are covered by a 4-inch acrylic dome from Blue Robotics, which will come from TartanAUV supply. Two BlueRobotics penetrator nuts will be used to run the power and the modulation clock cables into the enclosure.
Camera Board Layout
LED CC Driver Board Layout
LED Modulation Board Layout
Power Board:
