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Category: Electronics

  • Electric Imp driving a small OLED display

    Electric Imp driving a small OLED display

    I made some little functions for the Electric Imp to make it easier to drive a OLED display rom Digole (for example the 0.96″ Serial: UART/I2C/SPI 128×64 OLED Module Blue CN (DS12864OLED-2B), but they also come in other sizes and colours). They cost around $10, so it’s a pretty cheap display option that’s also easy […]

  • 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 […]