// Turn all off
for(n=get_length) {
	set_pixel(n-1, 0, 0, 0);
};

// Set last LED to yellow (useful to verify order of channels and configured length)
set_pixel(get_length - 1, 40, 25, 0);
blit;
yield;

// Blink first two LEDs alternatively at 0.5s interval
loop {
	if((get_precise_time % 1000) < 500) {
		set_pixel(0, 25, 25, 25);
		set_pixel(1, 0, 0, 0);
	}
	else {
		set_pixel(1, 25, 25, 25);
		set_pixel(0, 0, 0, 0);
	};
	blit;
	yield;
}