I'm a teacher. I use Piskel to draw with my class simple image and

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1

I’m a teacher. I use Piskel to draw with my class simple image and share this. Piskel export the image also in c.
This is an example.
Can I use FastLed Library and a Neopixel matrix to show the image?

#include <stdint.h>

#define NEW_PISKEL_FRAME_COUNT 1
#define NEW_PISKEL_FRAME_WIDTH 8
#define NEW_PISKEL_FRAME_HEIGHT 8

/* Piskel data for “New Piskel” */

static const uint32_t new_piskel_data[1][64] = {
{
0x00000000, 0x00000000, 0xff000000, 0xff000000, 0xff000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0xff000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0xff000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0xff000000, 0x00000000, 0xff000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0xff000000, 0xff000000, 0xff000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
}
};

2

Should be easy - you just need to load the piskel data into the LED array and use fastled.show.

3

Have a look at:

You’ll also want Macetech’s XY generator which makes mapping easy and painless:
https://macetech.github.io/FastLED-XY-Map-Generator/

4

Interesting that Piskel exports the alpha info too. FastLED uses hex values like this:
leds[0] = 0xFF44DD; //sets pixel 0 to color purple

So I guess you’ll need to strip off the alpha part from the exported values. But that’s cool that Piskel does export that so you could save it and use it if you’re actually doing transparent stuff.

Piskel looks fun! Looking forward to what you and your students create with it and FastLED.