Published May 2, 2017 © GPL3+

Grove - Introduction to Chainable LED

This project shows how to connect a chainable LED to Grove.

BeginnerProtip1 hour6,287

Things used in this project

Hardware components

Arduino UNO

Seeed Studio Grove Base Shield

Seeed Studio Chainable LED

Software apps and online services

Arduino Web Editor

Story

Introduction

I would like to share my first steps with the Grove 'plug & play' components. This is primarily a chainable LED. The sketch shows the full color spectrum. The LED itself offers an extension to connect additional LEDs from the manufacturer. Once the Grove Base Shield is plugged onto the Arduino Uno R3, the Grove's universal cable can be used to connect the LEDs to port D7.

Code

I use the Arduino WebIDE and have the code of Seeedstudio available in the facility for copy & paste. A Libary is needed: 2 additional tabs were created, namely ChainableLED.cpp and ChainableLED.h.

Summary

This short introduction reflects on the available original example of Seeedstudio. Further examples with the representation of light changes red / blue and changes in light intensity are available in the Libary.

Further examples with a introduction in components from Grove Starter Kit can be found here:

Button & LED String Light

Temperature Sensor

Light Sensor

Vibration Motor

Buzzer

Chainable LED

Rotary Angle Sensor / Potentiometer

3-Axis Digital Accelerometer

MyPIR-Sensor activate analog RGB Stripe controlled by Uno R3

More projects under my account.

Chainable LED

/* 
 * Example of using the ChainableRGB library for controlling a Grove RGB.
 * This code cycles through all the colors in an uniform way. This is accomplished using a HSB color space. 
 */


#include "ChainableLED.h"

#define NUM_LEDS  5

ChainableLED leds(7, 8, NUM_LEDS);

void setup()
{
  leds.init();
}

float hue = 0.0;
boolean up = true;

void loop()
{
  for (byte i=0; i<NUM_LEDS; i++)
    leds.setColorHSB(i, hue, 1.0, 0.5);
    
  delay(50);
    
  if (up)
    hue+= 0.025;
  else
    hue-= 0.025;
    
  if (hue>=1.0 && up)
    up = false;
  else if (hue<=0.0 && !up)
    up = true;
}

Credits

Ingo Lohs

182 projects • 194 followers

I am well over 50 years and come from the middle of Germany.

Embed the widget on your own site

Grove - Introduction to Chainable LED

Grove - Introduction to Chainable LED

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

Code

Summary

Code

Chainable LED

Credits

Ingo Lohs

Comments

Related channels and tags