Hi, I have a very simple question.

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1

Hi, I have a very simple question. I want to start a light display with one pixel switched on until a button press, like a standby light. How do I make just one led switch on?
I’m using ws2812 with arduino uno. Thanks

2

Try
fill_solid( leds, NUM_LEDS, CRGB::Black);
leds[0] = CRGB::Purple;
FastLED.show();

Then wait for the button press etc. yes?

3

The key thing is to look at the numerous examples that come with the FastLED library, take them apart, learn how they work, and then re-write them to perform something different.

4

The examples a good starting points, as is the wiki https://github.com/FastLED/FastLED/wiki/Overview

5

Thanks guys, I worked something out from the blink example but I’ll try Mark’s example later too. Thank you :slight_smile: