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Driving the gauge

A project log for Web powered antique wind gauge

An antique volt meter paired with a Raspberry Pi to display real time wind data.

mechanicalsquidmechanicalsquid 11/26/2014 at 10:100 Comments

Somehow, I need to drive this thing.

Given that it's a 250V gauge, I could drive it with 250V AC and modulate with PWM to vary the needle position.

Or, I could drive the coil directly, which will probably get full deflection at a much lower voltage.

First thing then - a strip down.

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