General Pin Out is the standard pin out of a Sensor / Trinket connector.
Sensor / Trinket's Pin Out is this specific Sensor / Trinket's wiring in relation to the General Pin Out.
SIGNAL-A / SIGNAL-B are signals that could be digital input, digital output, analog input or analog output. Or special signals such as serial communication (SoftwareSerial, IIC (I2C), etc) or other special signals.
Not Connected refers to the Pin not being used for this particular Sensor / Trinket.
You can use the sample programs in the following IDE libraries to do experiment on your own: _07_Sensor_LED_WS2812
Usage
Basic Functionality
The ColorLED is a trinket which emits different colors based on the set red, green, and blue values. A Core module can control the ColorLED to output the desired colors.
Note: ColorLEDs can be connected together in a daisy chain fashion, and each ColorLED can be addressed individually using the index number. First ColorLED being 0, second ColorLED being 1, etc.
Programming
Introduction
The ColorLED is used as an output pin. The Adafruit_NeoPixel library (Read more) is used to control the ColorLED.
num_colorleds - defines the number of ColorLEDs connected to the colorled_pin
colorled_pin - defines the pin the ColorLEDs is connected to
NEO_GRB + NEO_KHZ800 - defines the type of ColorLED and the frequency it runs at, leave as is
strip.begin() - initializes the ColorLED object
strip.setPixelColor(colorled_index, red_value, green_value, blue_value) - configures the color value for that colorled index, must call strip.show() for the ColorLED to actually display the change
colorled_index - is the index of the ColorLED to configure, first in the chain is 0, second is 1, etc
red_value - red value to set, between 0 (off) and 255 (maximum on)
green_value - green value to set, between 0 (off) and 255 (maximum on)
blue_value - blue value to set, between 0 (off) and 255 (maximum on)
strip.show() - call this function after setting the color values for the ColorLED to actually display the color
Example
This is a simple example which:
Turns the ColorLED to red
Waits 1 second.
Turns the ColorLED to green
Wait 1 second.
Turns the ColorLED to blue
Waits 1 second.
Note: Important lines of code are highlighted.
//Include the required libraries to control the ColorLED
//Library guide at: https://learn.adafruit.com/adafruit-neopixel-uberguide/arduino-library
#include <Adafruit_NeoPixel.h>
//Define the pin the ColorLED is connected to
const int COLORLED_PIN = 6;
//Define the number of ColorLEDs daisy chained together
const int COLORLED_NUM = 1;
//Declare and initialize the ColorLED object
Adafruit_NeoPixel strip = Adafruit_NeoPixel(COLORLED_NUM, COLORLED_PIN, NEO_GRB + NEO_KHZ800);
void setup() {
// put your setup code here, to run once:
//Initial serial communication port at 9600 baud
Serial.begin(9600);
//Initialize the ColorLED class object
strip.begin();
//Initialize all ColorLEDs to 'off'
strip.show();
}
void loop() {
// put your main code here, to run repeatedly:
//Configure the first ColorLED to maximum red
strip.setPixelColor(0, 255, 0, 0);
//Set the ColorLED
strip.show();
//wait 1 second
delay(1000);
//Configure the first ColorLED to maximum green
strip.setPixelColor(0, 0, 255, 0);
//Set the ColorLED
strip.show();
//wait 1 second
delay(1000);
//Configure the first ColorLED to maximum blue
strip.setPixelColor(0, 0, 0, 255);
//Set the ColorLED
strip.show();
//wait 1 second
delay(1000);
}
Copy and paste the code above to the Arduino IDE or
