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People like photos, so I took some.
#Whole Watch
Pretty boring, looks just like every F-91W, apart from the binary time
display. Top vertical segments are hours, bottom vertical segments are
minutes, horizontal segments are there for locating the bits.
#Frame
The wire sticking out of the bottom left hole is connected to Vcc. It
has been used to power the watch during firmware development.
#Populated PCB
Despite of the small-sized components (all passives are 0402),
populating the pluto PCB is doable given a microscope and plenty of
flux. The inductor at the bottom left as been harvested from the
original PCB. The crystal is wrapped in sticky tape to avoid shorting C1.
#Perfect fit
Like magic, all components fit perfectly within the plastic frame.
Little space has been wasted.
#Blank PCB
I case you're curios, there it is:
