Ac voltage detector teardown
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Alkaline aa alternatives
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A look at the bluetooth 4.0 battery monitor ii
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Julian’s postbag #155 – voltage and current meter
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Heating the office with cheap electricity
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A look at a v2l cable bought on alibaba.com
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Fixing the solar wattmeter
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My wattmater failed
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5 volt supercapacitors and leds of course
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Lidl 70w thermoelectric dehumidifier stripdown
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