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Power meter optical pulse detection
![](https://www.john.geek.nz/wp-content/uploads/2016/07/Pulses.jpg)
I’ve always planned to monitor my electricity usage. I had previously (about a year ago!) ordered some power transformers from seeedstudio and a six channel ADC for simultaneous three phase current and voltage measurement but never got around…
Read More »Introducing the ESP8266
![](https://www.john.geek.nz/wp-content/uploads/2016/07/2016-07-08-19.04.29.png)
About a year ago I put up some money for the Wino-Board kickstarter project, received my Wino-Boards and did nothing with them for 12 months. They are effectively a tiny Arduino board attached to the innards of an…
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