nkh

Tag: Arduino

  • Export data from Xively to CSV

    I’ve been using Xively (back then it was Cosm) for my data logging Arduinos since 2012, so when they announced that “LogMeIn has made the decision to retire Xively Personal from its current line of products effective January 15, 2018 at 12:00PM ET“, I thought I’d better get my data out of there. Unfortunately it […]

  • Logging statistics from a power meter with an Arduino and a LDR

    Logging statistics from a power meter with an Arduino and a LDR

    My electrical power meter has a pale yellow LED that flashes once for ever watt hour used. Inspired by power.labitat.dk, jespereklund.blogspot.com/2011/10/elmaler-overvagning-med-arduino.html and other projects, I set out to count the flashes with an Arduino and output some nice graphs showing my electricity consumption. I wanted to use an LDR (LDR’s on Amazon) to “see” the flashing LED […]