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Axiometa

Keyboard Key

Keyboard Key

AX22-0027

$4.99
$4.99
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Click it — see it — code it. This AX22-sized board seats a hot-swap* Cherry-MX-compatible mechanical switch and tucks a tiny  “NeoPixel” LED beneath the stem, giving you crisp tactile input and full-colour feedback from the same 22 × 22 mm square. A built-in 10 kΩ pull-up resistor debounces the switch for an active-low GPIO read. Drop it into any AX22 backplane to add per-key lighting, mode indicators, or game-style bling with a single digital pin and a handful of library calls in Arduino, MicroPython, or MicroBlocks.
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  • Technical Details

    - 22 mm × 22 mm square
    - 4× ⌀2.7 mm Mounting Holes
    - Compatible with most MX & Kailh key cap styles
    - 24-bit colour, 800 kHz single-wire protocol
    - Switch pullup and debounce
    - 3.3 V, 5.0 V
    - Arduino IDE Compatible
    - MicroPython Compatible
    - MicroBlocks Compatible

    Material Datasheet 

  • Pinout

  • Interface

PCB Design

  • Top

  • Bottom

Arduino Example Code

example.ino 
#include <Adafruit_NeoPixel.h>

#define INPUT_PIN 15
#define NEOPIXEL_PIN 45
#define NUM_PIXELS 1   // assuming only one NeoPixel

Adafruit_NeoPixel strip(NUM_PIXELS, NEOPIXEL_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  pinMode(INPUT_PIN, INPUT_PULLUP);  // use internal pull-up resistor
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  int pinState = digitalRead(INPUT_PIN);

  if (pinState == LOW) {
    strip.setPixelColor(0, strip.Color(255, 0, 0)); // Red
    strip.show();
  } else {
    strip.setPixelColor(0, strip.Color(0, 0, 0)); // Off
    strip.show();
  }
}

Guides and Blogs

  • First time setup

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  • Automatic Street Lights

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  • How Does an LDR work ?

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