Firmware flow
Applying one sound-and-light effect burst
Selected fireBurst() routine from an inspected firmware variant. Arming and the tilt/cooldown gate are handled outside this routine.
The routine ignores requests when disarmed or empty. Otherwise it requests one audio track, fades up to three remaining pixels in sequence and records the completion time. It disarms, requests audio sleep and clears the strip only when every configured pixel has been used.
The diagram describes one selected source variant and its command order. Blocking fades, audio playback timing and physical prop behavior were not tested; the routine does not establish one burst per distinct gesture.
Read the implementation
Selected firmware excerpts. The diagram explains the code; it is not a hardware test.
One effect burst and exhaustion handling
void fireBurst() {
if (!armed || birdsUsed >= NUM_LEDS) return;
playSafe(TRK_SHOT);
// Turn off 3 LEDs one-by-one with white fade
for (uint8_t k=0; k<SHOT_GROUP_SIZE && birdsUsed<NUM_LEDS; k++) {
whiteFadeOutOne(birdsUsed); // sequential effect
birdsUsed++;
}
lastTiltTime = millis();
if (birdsUsed >= NUM_LEDS) {
armed = false;
df.sleep(); // next arm will df.reset()
allOff();
}
}Blue, off and single-pixel white-fade helpers
void showAllBlue() {
for (uint8_t i=0; i<NUM_LEDS; i++) strip.setPixelColor(i, strip.Color(0,0,255));
strip.show();
}
void allOff() {
strip.clear();
strip.show();
}
void whiteFadeOutOne(uint8_t idx) {
// flash white quickly, then fade to off
strip.setPixelColor(idx, strip.Color(255,255,255));
strip.show();
delay(25);
for (int b=255; b>=0; b-=18) { // fade steps ~15 frames
strip.setPixelColor(idx, strip.Color(b, b, b));
strip.show(); // interrupts briefly disabled
delay(14);
}
strip.setPixelColor(idx, 0);
strip.show();
}Technical notes
Arming and tilt input
The selected variant resets the audio module, restores all 12 LEDs to blue and requests the startup track when armed. Its tilt routine accepts a closing edge or a sustained LOW state, with a cooldown check before another effect burst.
A three-pixel effect sequence
Each accepted burst requests one audio track and processes up to three remaining LEDs in sequence. A helper flashes each selected pixel white, fades it down and explicitly turns it off before the used-pixel count advances.
Finishing the sequence
After every configured LED has been used, the routine disarms, requests audio-module sleep and clears the strip. The fades use blocking delays. This source review establishes command order, without verifying physical playback timing, wake behavior or one burst per distinct gesture.