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NeoPixel Stick Lesson Plans with MicroPython

NeoPixels are VERY popular in all of our classes. We have an entire site dedicated to teaching computational thinking using LED strips called our Moving Rainbow Project.

We have found ways to purchase 8-pixel strips for under a dollar each. They are also available at Sparkfun and Adafruit for $6 each.

Sample Prompt

We just purchased 30 of these 8-pixel Neopixel Sticks for use in our 9th grade robotics classrooms.  Our students all have experience with introduction to MicroPython.  Can you suggest some lesson plans that use these devices.

Sample Response

1. Introduction to Digital Electronics and RGB LEDs

Objective

Understand how RGB LEDs work and how they can be controlled with digital signals.

Activities

  • Basic circuitry: Set up the Neopixel Stick with a microcontroller and a breadboard.
  • Programming LEDs: Light up the LEDs using MicroPython.
  • Experiment with colors: Create custom colors by mixing different intensities of red, green, and blue.

2. Programming Loops and Patterns

Objective

Learn how to create loops and control flow in MicroPython to generate patterns.

Activities

  • Design and implement a simple pattern using loops.
  • Create a "Knight Rider" scanner effect.
  • Discuss the effects of changing loop variables on patterns.

3. Data Representation and Visualization

Objective

Demonstrate how data can be represented visually using LEDs.

Activities

  • Display battery level or signal strength with LEDs (bar graph).
  • Create a simple equalizer for volume levels if a sound sensor is available.

4. Introduction to Communication Protocols

Objective

Understand the basics of serial communication and how data is transmitted to LEDs.

Activities

  • Explain serial communication and the Neopixel Stick's use of it.
  • Send a byte of data to control the color of an LED.

5. User Input and Interactivity

Objective

Integrate user input to control the LEDs.

Activities

  • Program LEDs to respond to buttons or sensors.
  • Create interactive games like a reaction timer.

6. Function and Modular Coding

Objective

Learn about creating reusable code blocks (functions).

Activities

  • Refactor pattern code into functions.
  • Build custom functions for lighting effects.

7. Synchronization and Timing

Objective

Explore the concept of timing and delays in programming.

Activities

  • Create LED animations with timing.
  • Investigate the impact of delays on animation.

8. Art and Design with Technology

Objective

Encourage creativity by integrating art and design with LED programming.

Activities

  • Collaborative art project with LEDs representing pixels.
  • Program sticks to change color in response to music or stimuli.

Remember to balance theory with hands-on activities and encourage experimentation.