25 May '16, 11am

Meter All The Phases: Three Phase Energy Meter With OpenWrt

Meter All The Phases: Three Phase Energy Meter With OpenWrt

Keeping track your overall electricity usage is a good thing, and it’s even better if you know where all the kilowatt-hours are going. [Anurag Chugh’s] house has the three phases coming from the electrical distribution box tidily organized: One for the lighting and fans, one for household appliances, and one for the hot water supply. To monitor and analyze the electrical fingerprint of his house, [Anurag] installed a 3 phase energy meter and hooked it up to the internet . [Anurag] acquired a Selec MFM383C 3-phase meter with Modbus interface and three current transformers, one for each phase. After everything was wired up and installed in the electrical distribution panel, he hooked up an Android tablet to the meter using a USB to RS485 bridge. He started reading out the Modbus registers from the meter using the monitoring app . After verifying that the app was reading sens...

Full article: http://hackaday.com/2016/05/25/meter-all-the-phases-three...

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DIY Air Quality Meter And Emissions Tester

DIY Air Quality Meter And Emissions Tester

hackaday.com 27 May '16, 8pm

Handheld measuring devices make great DIY projects. One can learn a lot about a sensor or sensor technology by just strapp...