not work with APA 102 but work fine with WS2812 Hi,

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1

not work with APA 102 but work fine with WS2812

Hi,

I’m facing a strange behavior with APA102,
the same program with:

fill_solid(leds, my_Leds, solidColor);
FASTLED.show();

shows immediately the colors on strip WS2812
but when i do for APA102, only on next
FASTLED.show() that will be show !

if first time i select a red and fastled show()… do not show nothing
then i select green, and do a fastled.show() will show the RED !

but for ws2812 works fine, how need to do

APA102 is connected on the right pins

thank you for any help

2

Are you sure you have APA102 and not SK9822?

3

Also make sure that you have the most recent version of the library (since you don’t mention what version you do have) - some issues like this were fixed a bit ago.

4

Also, wiring as well as using the correct definition as APA102 need clock pin wired up, defined and assigned, while WS2812 doesn’t.

5

All is fine, because is running fine for ws2812
yes, clock is wired and working, because all is work, the thing is: always is one step late( if you send ex: blue( show ), red( show ) green(show ) - i get red color
only after another FASTLED.show() i will get green !

arduino 1.69
FastLED version 3.001.003
ESP8266 huzzah ( last/updated board definitions )

thank you

6

Pull the latest directly from GitHub - 3.001.005

7

I did, with 3.001.005
same behaviour

When we run animations( like noise ) ok… we think is running ok, but, always retain the last frame

it’s easy to see, with change solid colors

i compiled and put on 3 boards, 3 othes strips apa102 and same thing

8

Try SK9822 - what you’re describing sounds more like the latching behavior of the sk9822 than the apa102 - wonder if your supplier is mislabeling?

9

@Daniel_Garcia I wonder if anyone really makes APA102 anymore at all! Id love if someone decaped an APA102 and an SK9822 and put it under a microscope for ID.

10

example:

void loop(){
Serial.println( “showing red”);
fill_solid(leds, 200, CRGB::Red);
FastLED.show();
delay(1500);

Serial.println( “showing green”);
fill_solid(leds, 200, CRGB::Green);
FastLED.show();
delay(1500);

Serial.println( “showing blue”);
fill_solid(leds, my_Leds, CRGB::Blue);
FastLED.show();
delay(1500);

Serial.println( “showing yellow”);
fill_solid(leds, my_Leds, CRGB::Yellow);
FastLED.show();
delay(6000);
}

will show red only after do the 2nd fastled.show( after fill with green ) and follows

then yellow, you will take only after repeat the loop, and execute the fasled.show for the red !

11

Again -'try defining it as SK9822 because what you’re describing is the sk9822 latching behavior.

12

you are right( always !)
i changed for sk9822 and is running… the sad for me is: i bought 50 units from aliexpress and was past 65 days from the purchase… no protection, no refund…
:frowning:

13

thank you Daniel

14

In some ways the sk9822 seems like it might be better - so that should work out for you :slight_smile:

15

@yosef18 Dont stress the SK9822 is better than the APA102

16

Thank you guys… i spent 12:04am till 2:37am in a chat with aliexpress, trying explain , but final decision is: you protection has expired !
it’s a lesson… take care with aliexpress

but it’s a good news from you guys,… have a nice day