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Googly Eyes: adjust constants, Audio Spectrum: add comment re FFT library

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This commit is contained in:
Phillip Burgess 2021-10-01 13:56:32 -07:00
parent d2ac0e2776
commit 5f14088b38
2 changed files with 4 additions and 3 deletions
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1
EyeLights_Audio_Spectrum/EyeLights_Audio_Spectrum.ino
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@ -1,6 +1,7 @@
/*
AUDIO SPECTRUM LIGHT SHOW for Adafruit EyeLights (LED Glasses + Driver).
Uses onboard microphone and a lot of math to react to music.
REQUIRES Adafruit_ZeroFFT LIBRARY, install via Arduino Library manager.
*/
#include <Adafruit_IS31FL3741.h> // For LED driver

6
EyeLights_Googly_Rings/EyeLights_Googly_Rings.ino
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@ -23,7 +23,7 @@ public:
// so rings don't spin in perfect lockstep.
angle = random(1000);
momentum = 0.0;
friction = 0.9 + random(500) * 0.0001; // Inverse friction, really
friction = 0.94 + random(300) * 0.0001; // Inverse friction, really
}
// Given a pixel index (0-23) and a scaling factor (0.0-1.0),
@ -41,9 +41,9 @@ public:
// physics simulation and render the corresponding LED ring.
void iterate(sensors_event_t &event) {
// Minus here is because LED pixel indices run clockwise vs. trigwise.
// 0.004 is just an empirically-derived scaling fudge factor that looks
// 0.006 is just an empirically-derived scaling fudge factor that looks
// good; smaller values for more sluggish rings, higher = more twitch.
momentum = momentum * friction - 0.004 *
momentum = momentum * friction - 0.006 *
(cos(angle) * event.acceleration.z +
sin(angle) * event.acceleration.x);
angle += momentum;