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Hand Gesture Smart Light Control

Control your LIFX bulb with your hand movement

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I've had my LIFX bulb for a while now, and I absolutely love the fact that I can now change my light to different colors, and even different shades of white. However, I find that it's really cumbersome to flip through my phone just to turn on the light or change the brightness.Which is why I built this project, a simple and quick way to control your LIFX bulb. The control is really intuitive: place your hand over the device, the further you move your hands up, the brighter the light, vice versa.

Bottom.stl

Enclosure Bottom

Standard Tesselated Geometry - 62.78 kB - 08/04/2019 at 23:02

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Top.stl

Enclosure Top

Standard Tesselated Geometry - 121.47 kB - 08/04/2019 at 23:02

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  • 1 × HC-SR04 Ultrasonic distance sensor
  • 1 × Particle Photon
  • 1 × Perfboard
  • 1 × Wires
  • 1 × Female Headers optional

  • 1
    Prepare the Supplies

    Use your pliers to bend the headers of the ultrasonic sensor, this way the sensor will be facing up when you solder it onto the perfboard.

    This is optional, but if you would like to reuse your Particle Photon, trim 2 female headers to match the male headers of Photon.

    Trim your perfboard to a 50 x 50 mm square. I find it easier and cleaner to do this with a diagonal cutter instead of a saw.

  • 2
    Wiring and Soldering

    Mark the hole for the ultrasonic sensor headers before temporarily removing it from the board. 

    Wire up according to the schematic and reinsert the sensor when finished. 

    Flip the board and solder all the connections.

  • 3
    Enclosure and Assembly

    Download the STL files, I printed mine with the following settings:

    • Material - Silver PLA
    • Infill - 10%
    • Support - None
    • Speed - 50mm/s

    Afterward, line up the ultrasonic sensor with the cutout, and snap fit the case together. The electronics should fit pretty snug inside.

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