RDIoT Demo

Magic Cup Light Module (KY-027) [D020]

https://www.youtube.com/watch?v=yrBU-JRPk8M

*GitHub : https://github.com/rdiot/rdiot-d020.git

* Specs

Magic Light Cup modules are easy to Interactive Technology Division developed a can and ARDUINO interactive modules, PWM dimming principle is to use the principle of two modules brightness changes. Mercury switches provide a digital signal that triggers the PWM regulator, through the program design, We can see the light like two cups filled with the effect of shuffling back and forth.

* Contents

- Connect

G ----- GND

+ ----- X

S ----- D10

L ----- D11

- Key Code

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);  // LCD2004

int pinLed = 11;

int pinInput = 10;

int stateA = 0;

int brightness = 0;

int oldBrightness = 0;

void setup()

{

  lcd.init();  // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD2004");

  pinMode(pinLed, OUTPUT);

  pinMode(pinInput, INPUT);  delay(1000);

  digitalWrite(pinInput, HIGH);

  lcd.clear();

}

void loop()

{ 

  lcd.setCursor(0,0);

  lcd.print("D020:Magic Cup Light");

  stateA = digitalRead(pinInput);

  if (stateA == HIGH && brightness < 255)

    brightness++;

  if (stateA == LOW && brightness >0)

    brightness--;

  if (oldBrightness != brightness)

  {

    lcd.setCursor(0,1);

    lcd.print("brightness=" + (String)brightness + "  ");

  }

  oldBrightness = brightness;

  analogWrite(pinLed, brightness);

  delay(10); 

}