This is the final ‘real’ design which should be used for manufacturing. The design is made to fit every component inside and should be everything our prototype was not. For illustrational purposes, the outer walls are not ‘frosted’. The changes are also mostly inside the AquaLumi, the outside has not been altered.
The part which is far more better than the prototype part, is the outer housing. This can be manufactured in such a way that every component fits exactly how it should and is in balance. There are four points on where the print circuit board can be fixed. Two batteries fit between these four points and the other two fit outside them. On the bottom are the added weight (for floating stability) and the charging coil.
Here is a better view of the battery placement.
The weight is positioned inside the coil and held in its place by its form. The coil is also form-fitting so it doesn’t move around inside. There are two capacitive strips and one capacitive point in the middle to make contact with the water. These are embedded in the inner shell and protrude through this shell. On the PCB should be sockets where the strips and point can be plugged in.
Close-up of the capacitve strip and point.
View of the weight and coil.
Here is a nice view of the PCB. The LEDs are integrated on the PCB which makes the whole more compact.