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For monitors, you don't need to do this at all. It's in the monitor spec. Have you ever seen a monitor boast it has a 120hz Refresh Rate? In perhaps the simplest equivalency in computing, 1 Hertz = 1 Frame each second. Frames are the still images displayed by the screen. Just like movies, we still view our screens as a series of rapidly changing ...


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You cannot measure the phones power consumption this way. The USB dongle will only see the current being used to charge the battery of the phone not the power the phone is drawing from the battery. You could use an application on the phone that monitors the phone battery and logs its usage. No external device can monitor the power the phone is using. This ...


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A key feature you need for this that many of the cheapest solutions don't offer is full isolation between the mains input and the USB port. I did a search on the term "USB multimeter with isolation" and came up with the following product that I've never used but I think might fit the bill: Hantek 365B It runs at $US105 from Amazon and from the user ...


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The device you cited is spendy; if your budget does not permit acquiring it, there are alternatives. You could get an iPhone and the xSensor app cited in this Wired article, or an Android phone with three-axis magnetic sensors (note: Not all Android phones do have three-axis magnetic sensors) and an app like Physics Toolbox Magnetometer as those apps ...


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