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      Build simple Retro Style VFO (Variable frequency oscillator)
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Miroslav Hancar

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  • With a current consumption of only a few microamperes, this thermometer can operate for years on a single CR2032 battery—or indefinitely with a solar cell.

    Ultra Low Power thermometer

    2280
    0
    8
  • These candles flicker like a real candles and can be activated with an actual flame

    LED candles that can be lit with a real flame

    2400
    0
    10
  • Buying a ready-made power supply would be too easy, so I decided to make my own.

    DC power supply

    3055
    0
    15
  • A highly configurable, low-power current probe.

    Battery-powered current sense amplifier

    4653
    0
    8
  • Electricity meter with touchscreen and remote access.

    SIngle-phase energy meter

    5577
    2
    10

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