The circuit board and GPS module mounted on the back plate.
The panel on the back contains the power socket, RS232 port, GPS antenna socket and time zone changing button.
The circuit being tested. GPS Module at the top left.
Machining the flywheel cast from lead gathered in the wild (fallen off tyre weights from the road).
The GPS module mounted to the back panel.
Inside the box showing the two mirrors that make up the periscope you can see the display in.
A close up of the flywheel and micro switch that controls the flashing of the display back light.
Finished device.The casing is made from MDF varnished then sprayed with black enamel. The front panel is sheet steel painted with steel wheel paint.
The eye pieces are made from a pair of ancient broken binoculars with the lenses removed.
The side of the device showing the steel crank handle.
The back slightly open showing how the screen is visible though the eye pieces only via the periscope mirrors.
The display. Here the device didn't have a GPS fix so only the local time is displayed and the UTC time is shown to be estimated.
Back One Image
Show More Info