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1.2

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by Pete Prodoehl

Introduction

Connect a Crazy Circuits NeoPixel to a Bit Board and control it with code.

We'll explore how to control an RGB LED (a "NeoPixel") for a bit more color from our LEDs.

Video Overview

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  1. We'll use Maker Tape to connect the NeoPixel to the Bit Board on a LEGO baseplate. To connect the NeoPixel, one side goes to Ground (GND) and the other side to 3.3v
    • We'll use Maker Tape to connect the NeoPixel to the Bit Board on a LEGO baseplate.

    • To connect the NeoPixel, one side goes to Ground (GND) and the other side to 3.3v

    • We'll then connect the center pin labeled DI (for Digital Input) to Pin 0, which will control the NeoPixel.

    • A NeoPixel is a "Smart LED" which is actually three LEDs (a red, green, and blue LED).

    • You'll notice the Ground on the Bit Board (as well as the NeoPixel and other Crazy Circuits components we'll use) is color coded White.

    • The 3.3v hole on the Bit Board is labeled and is actually two holes right next to each other on the Bit Board. (There is a small line showing the connection between them.)

  2. If you've never used a micro:bit before you'll want to check out this guide:  Bit Board V2 Setup and Use
    • If you've never used a micro:bit before you'll want to check out this guide: Bit Board V2 Setup and Use

    • We're going to load the following code for our NeoPixel RGB program: https://makecode.microbit.org/_8YbArTcCX...

    • The NeoPixel extension allows us to control the NeoPixel. In this example we'll just set it up and set it to different colors; red, then green, then blue.

    • Once the code is loaded it should start running immediately.

    • You can power the micro:bit via the USB cable you used to load the code or you can use a battery pack plugged into the Bit Board.

    • You'll see the NeoPixel cycle through red, green, and blue in a loop, pausing one second after each color change.

    • Follow along with our recorded Live Stream!

    • You can watch the full video of us walking through this project, along with explaining and exploring the code: https://youtube.com/live/DL4SOdBmF5w

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Pete Prodoehl

Member since: 3/4/20

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