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Atmel’s 90E24 is a high-performance active and reactive energy metering device for single-phase two-wire, single-phase three-wire or anti-tampering active and reactive energy meters. Here is a demo power line monitor project using Atmel 90E24 and allows voltage, current, true power, apparent power, reactive power, power factor, phase angle, and line frequency to be accurately measured.
AC power line monitor using Atmel 90E24
Matthew Venn has designed a prototype energy wristband that would tell you when there is a change in electrical energy usage at home through a a gentle vibration. The wristband also consists of a 4-LED bargraph to display the current usage.
Energy wristband monitors energy usage at home
A wristband that tells you energy changes in your home. It connects via a Raspberry Pi computer to a base station like a ‘current cost’ or similar. When a change in energy usage occurs, the wristband vibrates and a small LED bargraph shows your current usage from 1 to 4. Realtime energy use can be queried by pressing the button.
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