Clocks

Meter Movement

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    Volumes

    1. Vol 1 Overview & Decision Tree What a meter-movement clock is, the ways to build or buy one, and which path fits your bench
    2. Vol 2 How a Moving-Coil Meter Works The d'Arsonval movement, why its scale is linear, full-scale current and internal resistance, and the damping that turns a twitchy needle into a smooth sweep
    3. Vol 3 Meters for a Clock — Selection & Sourcing Choosing and buying the panel meters: full-scale current first, then internal resistance, sweep angle, matching, style, and where to find them
    4. Vol 4 Driving the Meter Turning a desired time into the right needle deflection — PWM and a resistor, filtering, current sources, and the scale-adjust calibration that makes three needles tell the truth
    5. Vol 5 Timebase & Counting Logic How a 20 MHz crystal becomes a 1/10-second tick, how tenths roll up into hours, and how each unit of time becomes a needle deflection
    6. Vol 6 Build It Yourself The collected Multimeter Clock as an ordered procedure — controller, meters, faces, case, and the calibration that makes the needles tell the truth
    7. Vol 7 Buy a Kit or Finished Clock The buy-instead-of-build path: finished voltmeter clocks, single-board kits, the collected design's controller kit, and sourcing the meters
    8. Vol 8 Dials, Faces & Enclosure Drawing the custom meter face in MeterBasic, mapping time onto a linear scale, and the three ways to frame the meters as an instrument panel
    9. Vol 9 The Collected Project A full walk-through of abbtech's Multimeter Clock and the owner's two-meter 'So Analog' parts — circuit, firmware, calibration, case, and an honest list of gotchas
    10. Vol 10 Cheatsheet & Glossary A laminate-ready synthesis: the equations, the meter-selection and BOM quick-refs, the PIC and LM7805 pinouts, the calibration drill, source URLs, and an A–Z of terms