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自作一个高性能的三基色LED控制器(八)

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Step 13The mounting hardware.

The mounting hardware.

I like to make my kits as complete as possible, so this one even comes with four mounting pillars and screws to let you attach it to a panel or mount it into an enclosure. Even if you intend to leave it out on your bench I'd recommend at least clipping the plastic spacers into the PCB as shown. This will help keep the bottom of the PCB clear of any conductive bits lying on your workbench.

 

 

Step 14Wiring up LEDs to the controller.

Wiring up LEDs to the controller.

In most instances you will use a 12V supply for your LED arrays and wire the LEDs in series groups of three with a suitable resistor in series. If you use existing LED strips designed for 12V or the modules I sell on my website at http://www.bigclive.com then they will either already have the LEDs and resistors built in, or will have suitable circuitry present to accommodate the LEDs and resistors.

The power supply is connected with it's positive and negative going to the "+" and "-" connections as shown. The two "+" connections are already commoned on the PCB, and the top one is the common for your LEDs. It;s best to use a regulated supply to help ensure that the LEDs don't get over-driven. A cheap and readily available plug-in regulated 12V power supply is ideal.

If you're hard wiring LEDs or making your own RGB panels then they are connected as shown in the image. The resistors are chosen to suit the forward voltage of the LEDs, but in most cases an average value can be used. Typically this would be:-

150 ohms for green or blue LEDs.
270 ohms for red LEDs.

For premade panels you just connect the common positive to the top positive connection and the switched RGB connections to R,G & B respectively.