Digital measuring tape

You’ll never come up short with this measuring tape. That’s because there isn’t actually any tape in the device; it measures distance based on the rotation of a wheel. Roll it across the room and you’ll get an accurate measurement of the distance the little bugger traveled. Like the Etch-a-Sketch from Monday this uses the encoder wheel from a mouse as the input. The IR emitter and sensor from the ubiquitous peripheral find a new home on the PCB that hosts the PIC 16F819. It monitors the rotation, turns it into inches, then spits that number out on a 7 segment display. Handy, and cheap!

16 thoughts on “Digital measuring tape

  1. I think the real hack is how he used his pet gerbil to make the window in the case.

    You know, hacks don’t have to look like ugly … just sayin’.

  2. If this is made to do a job they find other device’s don’t do so well Then worth the build as in the end they may save time and money

    Good Job

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