A piece of oak plank, surrounded by a metal angled frame, is used as a base for mounting the two meters so that the clock can be hung up on the wall. A pair of seven segment displays are connected to the Arduino to make it easier to set the time. Precision time signals are derived from a DS3231 RTC module connected to an Arduino. Two additional buttons provide a convenient interface to adjust the time. The set screw which was once used to align the pointer with the zero mark on the dial is now used to activate a micro switch that enables daylight savings time. To retain some of the original charm, the new dials have discoloration and blemishes replicated from the old dials. Fresh dials are prepared to replace the original ampere markings with hours and minutes. The original moving-coil movements are discarded, and the pointer is attached to a servo which will act as the new movement. A small cam is used to engage the DST switch.Īs you might expect, the conversion process is reminiscent of their previous projects. The Drake & Gorham (London) meters going under the knife appear similar to vintage hardware from just after the end of World War II, such as this Ferranti Ammeter found at the Science Museum Group, making them at least 75 years old. Rinder the angle grinder, Weldy the welder, Sharp Eye the marker, rounded up by Sandy the Sander and Jiggy Saw. TS the table saw and his trusty band of clamps, G. The real heroes of the story are their trusty tools – Mac X the knife, Mr. , purveyors of comic strips “where tools are heroes”, have saved another pair of old, vintage, analog meters from the junkyard by converting them into a Meter Clock.
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