led Archive

  • Some time ago I was curious to know how the heart beat rate and blood oxygen level are measured by such a simple device. A “pulse oximeter” is basically a […]

    Simple pulsoximeter

    Some time ago I was curious to know how the heart beat rate and blood oxygen level are measured by such a simple device. A “pulse oximeter” is basically a […]

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  • I came up with this idea for my then-fiancée/now-wife’s birthday. It’s an AVR micro with an RGB LED fitted into a not too big PCB. The row of pins allows […]

    RGB LED earrings

    I came up with this idea for my then-fiancée/now-wife’s birthday. It’s an AVR micro with an RGB LED fitted into a not too big PCB. The row of pins allows […]

    Continue Reading...