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    element14 Presents

    Learn basic electronics, explore STEM subjects, get what you need to know to get started on electronics projects, and more.

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    The Learning Circuit
    sudo Sergeant
    The Ben Heck Show


    Karen shows you how to build a laser beam projector.  It will use a laser diode and two motors with mirrors attached to their shaft so that the mirrors are are spinning. When the laser beam hits the first mirror it turns it into a circle. That circle gets reflected off of the second mirror and it's projected onto the the wall into a kind of spira trap shape. Potentiometers will allow you to adjust the speed of the motors so that we can adjust how fast the spirograph is spinning.


    Product NameManufacturerQuantityBuy KitBuy Kit

    Electrolytic Capacitor, Miniature, 10 µF, 25 V, 515D Series, ± 20%, Radial Leaded, 5 mm


    Buy NowBuy Now

    Electrolytic Capacitor, 100 µF, 25 V, M Series, ± 20%, Radial Leaded, 6.3 mmPANASONIC ELECTRONIC COMPONENTS2Buy NowBuy Now
    2x1 female headerMCM4Buy NowBuy Now
    2x1 male headerMCM4Buy NowBuy Now
    Heat Sink, Square, PCB, 31 °C/W, TO-220, 13.2 mm, 6.4 mm, 19.1 mmWAKEFIELD SOLUTIONS2Buy NowBuy Now
    DC Motor, Hobby, Prototyping, 6 V, 9100 rpmAdafruit2Buy NowBuy Now
    Prototype Board, 1.6 mm, 72 mm, 47 mmMULTICOMP1Buy NowBuy Now
    Rotary Potentiometer, Carbon, 10 kohm, 50 mW, ± 20%, PTV09A Series, 1 Turns, LinearBOURNS2Buy NowBuy Now
    6V (4) AA battery pack, Wire leadsKEYSTONE1Buy NowBuy Now
    Through Hole Resistor, 47 ohm, MCMF0W4 Series, 250 mW, ± 1%, Axial Leaded, 250 VMCM1Buy NowBuy Now
    Through Hole Resistor, 47 ohm, MCMF0W4 Series, 250 mW, ± 1%, Axial Leaded, 250 VTE CONNECTIVITY2Buy NowBuy Now
    Toggle Switch, Subminiature, On-Off-On, SPDT, Non Illuminated, 200A Series, Through HoleE-SWITCH1Buy NowBuy Now
    LM317T -1.2V to 37V, 1.5A Adjustable Positive Voltage Regulator in TO-220-3 PackageSTMICROELECTRONICS2Buy NowBuy Now