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PROJECTS micro:bit

LED Writing Board (micro:bit Compatible)

DFRobot Apr 04 2018 1379


Parts needed
1 x photo frame
RGB individually addressable LED strip (neo pixels)
1 x microbit
1 x micro:mate(breakout board)
Drawing using neon markers

How it works?
The LED writing board is created using a photo frame that is surrounded with LED strip lights. When button A is pressed, the led strip turns white and flash. When button B is pressed, a random color is generated. To off, press button A and B together.

How to connect?

Micro:mate

RGB LED

Pin 0 Black (Gnd)

GND

Pin 0 Red (3.3V)

+5V

Pin 0 Blue (Signal)

DI



Lay the LED strip around the frame. Try to connect the strip around the entire frame.
As my photo frame base needs to slide in, I formed a U shape.
 
Program



** You can power around 8 LEDs directly from the micro:bit but, for more than that, you might need to power them separately. I tried just using the Vin of the micro:mate and it seems to work fine. Do take note that if current is not enough, the color may not be correct.
 
If you want the strip to connect to external supply


** you still need to connect power to the  micro:bit.



 
This is a bigger version. The concept is the same.


 (This is done by modifying an existing whiteboard). The video is purposely flipped.
 


Related Blog Post:


Microbit Tutorials

Micro:bit board: an introduction

5 Easy Steps for you to Quick Start with BBC Microbit

Micro:bit JavaScript Blocks Editor: Hello World

Micro:bit JavaScript Blocks Editor: Turning LEDs on and off

Micro:bit JavaScript Blocks Editor: Detecting button click events

Micro:bit JavaScript Blocks Editor: String interpolation

Micro:bit: MicroPython support


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