LED Strips

LED strips are amazing!  They are lengthy, bright, affordable and easy to manipulate as they are flexible and can be cut in increments.

There are two main kinds – strips whose LEDs are individually addressable, and strips in which all LEDs are addressed at the same time.

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So you want to control an LED strip with Arduino…

What you need :

  1. LED strip – there are so many kinds and needs will vary!
    1. Today I am using Adafruit’s 30 RGB neopixel strip.  Neopixels are like LEDs 2.0, the controller chip is actually inside the LED itself, thus these are individually addressable LEDs!
    2. Adafruit’s Neopixel Guide!
  2. Arduino – need one with a fair amount of memory, I will be using the Uno
  3. Power Supply
    1. 5V DC Power supply 
    2. 3.7 Volt lithium-polymer battery – if you want it to be cordless for wearables etc. 
    3. don’t use higher than 6v you will fry the strip!
    4. if controlling more that 10 neopixels you cannot just power the strip directly off the 5V pin and your computer!! You need to hook up the 5V power supply
  4. capacitor (1000 µF, 6.3V or higher)
  5. resistor (probably 300-500 ohm)
  6. helpful videos
    1. https://www.youtube.com/watch?v=KaClIgAVuI8

Using LED strip – non individually addressable 

  1. need transistor any power NPN or N-Channel MOSFET – TO-220 Packages

 

Putting it together….. I still need a capacitor.. so to be continued …

 

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