Need help coding

They appear to be based on the APA102C pixel LEDs. As Shabaz has already told you in the other thread, you can use the FastLED library on the Arduino for this.

FastLED LED animation library for Arduino (formerly FastSPI_LED) 

https://github.com/FastLED/FastLED/wiki

Arduino Basics: NeoPixel Playground

Hi Dave

thanks, but as a total newbie,

im not sure what I'm looking at,,

i was given these boards and I'm lost in what I'm looking at,, I need more help than be directed to a library,,

i appreciate your help a great deal but I'm still lost

thanks

bob

Take a look at the code sample at:

Arduino Basics: NeoPixel Playground

It's for Neopixels (WS2812B), so you will need to make a change for using APA102C

After line 29:

#define DATA_PIN 6

you will need to add:

#define CLOCK_PIN 7

These pins 6 & 7 are the pins on the Arduino you have connected your LED data and clock lines to.

Line 63 in the code:

FastLED.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS);

needs changing to:

FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);

Here was my first attempt with APA102C LED's & the FastLED library

Data on pin 6

Clock on pin 7

#include <FastLED.h>
#define NUM_LEDS 1
#define DATA_PIN 6
#define CLOCK_PIN 7
CRGB leds[NUM_LEDS];
void setup() 
{
   // put your setup code here, to run once:
   FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, RGB, DATA_RATE_MHZ(12)>(leds, NUM_LEDS);
}
void loop() 
{
   // put your main code here, to run repeatedly:
   // Turn the first led red for 1 second
      leds[0] = CRGB::Red; 
      FastLED.show();
      delay(1000);
   // Turn the first led green for 1 second
      leds[0] = CRGB::Green; 
      FastLED.show();
      delay(1000);
   // Turn the first led blue for 1 second
      leds[0] = CRGB::Blue; 
      FastLED.show();
      delay(1000);
      // Set the first led back to black for 1 second
      leds[0] = CRGB::Black;
      FastLED.show();
      delay(1000);
}

Dave

  thanks it's something

i can only see 30 lines of code,

it a start

I've not done anything with this stuff before

so I'm learning

when I compile I get Leds does not name a type

sorry to bother you ,,

if you want we can text

617-275-9212

Hi Robert,

If you can paste the entire output error, it will help, because it will likely mention which line the error was on.

Also, precision is key, because you state the error is 'Leds does not name a type' but there is no identifier called 'Leds' -

there is one called 'leds' and the capitalisation makes a big difference. So, I can't tell if there is a mistake in the typing of the error message, or some other mistake.

This ambiguity would not occur, if you can precisely paste the exact output you see.

Hi Robert,

If you can paste the entire output error, it will help, because it will likely mention which line the error was on.

Also, precision is key, because you state the error is 'Leds does not name a type' but there is no identifier called 'Leds' -

there is one called 'leds' and the capitalisation makes a big difference. So, I can't tell if there is a mistake in the typing of the error message, or some other mistake.

This ambiguity would not occur, if you can precisely paste the exact output you see.