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84       15 Dangerously Mad Projects for the Evil Genius




























































         Figure 8-4    Schematic diagram for the LED module


        What You Will Need                                 they are common anode (the positive connections
                                                           of each of the three LEDs connected together) and
        You will need the following components to build
                                                           that the pin connections are the same as indicated
        the Arduino-controlled LED module. They are
                                                           in the schematic diagram of Figure 8-4. It is
        listed in the Parts Bin.
                                                           always worth checking the LED’s data sheet.
           Later in this chapter, you will find the
                                                             LEDs with a diffuse lens produce a better effect
        component listing for the motor controller.
                                                           than those with a clear lens. However, if only
           The LEDs can be quite expensive when bought     clear-lens LEDs are available, you can gently
        from a regular component supplier. You can get a   roughen the front of the LED with sandpaper to
        better deal on eBay. When buying them, make sure   give it a frosted effect.
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