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LED: v2.0 Prototype Demo

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PCB: LED v2.1 Board (Top)

PCB: LED v2.1 Board (Bottom)

Eagle CAD: LED v2.1 Schematic

Eagle CAD: LED v2.1 PCB Layout

Eagle CAD: LED v2.1 Bill of Materials

Digikey.ca: Bill of Materials

Description:

"Fidget" boards: one with traditional single-colour LEDs and the other with multi-colour Neopixel RGB LEDs. The single-colour traditional LEDs version will fit in a small Hammond project box.

Features:

- Moderate current draw with both traditional 3mm LEDs and neopixel RGB LEDs

- LiPo battery can run either board when you're away from your PC's USB port

- 1000uF surge cap for RGB Neopixel LEDs and current limiting resistors for power and data signals

- 3v3/5v level shifter for data signal (RGB board)

- Amplified buzzer speaker

Details:

- Either 1 matrix of 9 traditional LEDs (LED board) or two matrices of  9 Neopixel RGB LEDs (RGB board) are arranged in a 3x3 matrix

- Pressing the GO button causes the matrix to progress through predefined display patterns

- RGB Neopixels can have multiple uses including that of rolled dice for poker, Yahtzee, etc.

- On the RGB board, a jumper allows you to code for both RGB matrices independently or combined into a single large matrix

- Utilizes a powerful Adafruit QT-PY SAMD21 or QT-PY RP2040 microcontroller

- Many SMT discrete components were used where possible

- On-board 500mA LiPoly battery charger

- Mounting holes are provided if you wish to use a 3D-printed case or Hammond project box

Software:

- Libraries and Neopixel learning document

- Optional Fast LED library

Software for 3x3 LED Board:

- Here are some display routines I have written for the QT-PY LED board: QT-PY_3x3_LED_Array.ino. The code is in a state of flux as I update it regularly. You'll notice that each of the routine sets has its own folder within the Arduino IDE: Bands.ino, Beeps.ino, Blinks.ino, Wipes.ino.

Software for 3x3x2 RGB Neopixel LED Board:

- Here are 24 RGB Neopixel LED display patterns I've written so far including:

   Beeps

   Blanks

   Dice

   Flash

   March/Fill

   Shapes

   Waves

- Games have yet to be designed

PCB: RGB v3.3 Board (Top)

PCB: RGB v3.3 Board (Bottom)

Video: v3.1 Prototype Demo

PCB is out for manufacture.

Eagle CAD: RGB  v3.3 Schematic

Eagle CAD: RGB  v3.3 PCB Layout

Eagle CAD: RGB v3.3 Bill of Materials