MAX9814 ws2812拾音灯Arduino程序

ID:785695 · 发表于 2021-10-6 14:20

Arduino源程序如下:

/*MAX9814掉落效果版本
WS2812 灯带*1
MAX9814模块*1
公对母杜邦线*6
ESP8266NODEMCU开发板*1
开发板选择Wifiduino 《《====================================
最小系统接线（灯带60灯珠以下）
MAX9814 WS2812 ES8266
VCC +5V 3.3V
GND GND GND
OUT / DIN A0/GPIO5
GAIN 3.3
* * QQ群1147147694 《《=====================================
*/
//中间扩散效果
#include "FastLED.h"
#define NUM_LEDS 144 // LED灯珠数量
#define LED_DT 5 // 输出控制信号引脚
#define sigPin A0 // ESP8266ADC引脚接MAX9814 OUT信号引脚 GAIN接3.3V
#define LED_TYPE WS2812 // LED灯带型号
#define COLOR_ORDER GRB
CRGB leds[NUM_LEDS]; // 建立光带leds
int sig;//麦克风读取数值
int pre_si;//指示旧值
int si;//指示新值
int sig_min = 1024;//初始读取值最大小值，开机后将重新界定
int sig_max = 0;
double triger_factor = 1.40;//阈值过滤噪音该数值调整范围1-2 数值越高要求声音越大才能触发
int drop_dot; //初始掉落位置
unsigned long drop_time;//触发掉落时机
int interval = 30; //每次律动变化的过渡时间
int drop_interval = 100; //掉落点收缩速度
int maxBrightness = 250;
int mid = int(NUM_LEDS / 2);
int delta = int(maxBrightness / mid); //渐变量
unsigned long triger_time = 0;
int randC = 130; //掉落点随机颜色初始
bool raising = true;
void setup() {
Serial.begin(115200);
LEDS.addLeds<LED_TYPE, LED_DT, COLOR_ORDER>(leds, NUM_LEDS);
// .setCorrection(TypicalLEDStrip);//如果灯带未响应，请设置
FastLED.setBrightness(255); // 设置光带亮度
pinMode(sigPin, INPUT);
}
void loop()
{
musicV();
}
void musicV()
{
//计算环境读取最大最小值，所以在上电后循环几次后达到平稳的触发值。
sig = analogRead(sigPin);
if (sig < sig_max)//
{
sig_max = sig;
}
if (sig > sig_min)
{
sig_min = sig;
}
int mean = (sig_min + sig_max) / 2;
int _sig = abs(sig - mean ) + mean;
_sig = constrain(_sig, int(mean * triger_factor), sig_max);
//Serial.println(_sig);
si = map(_sig - int(mean * triger_factor), int(mean * triger_factor) - int(mean * triger_factor), int(sig_max) - int(mean * triger_factor), 0, mid - 2);
si = constrain(si, 0, mid - 2);
if (si == mid - 2) {
randC = random(0, 255);
pre_si = 0;
}
Serial.println(randC);
//===================================================================================================== PART1
if (si > pre_si)
{
if (si > drop_dot)
{
if (si * 1.6 < mid - 1) {
drop_dot = int(si * 1.6);
}
else {
drop_dot = mid - 3;
}
}
for (int j = pre_si - 1; j < si + 1; j++)
{
while ( millis() - triger_time < int(interval / (si - pre_si) + 2))
{
if ((drop_dot > j + 3 ) && (millis() - drop_time > drop_interval))
{
leds [mid + drop_dot + 1] = CRGB::Black;
leds [mid - 1 - drop_dot - 1] = CRGB::Black;
leds[mid + drop_dot] = CHSV(int(255 - randC), 255, maxBrightness);
leds[mid - 1 - drop_dot] = CHSV(int(255 - randC), 255, maxBrightness);
FastLED.show();
drop_dot--;
drop_time = millis();
}
leds [mid + j] = CHSV(delta * j, 255, maxBrightness - delta * j);
leds [mid - 1 - j] = CHSV(delta * j, 255, maxBrightness - delta * j);
//leds [mid + j] = CHSV(randC, 255, 255 - delta * j);
//leds [mid - 1 - j] = CHSV(randC, 255, 255 - delta * j);
}
FastLED.show();
triger_time = millis();
}
}
// --------------------------------------------------------------------------------------------------
//===================================================================================================== PART2
if (si < pre_si)
{
leds [mid + drop_dot + 1] = CRGB::Black;
leds [mid - 1 - drop_dot - 1] = CRGB::Black;
leds[mid + drop_dot] = CHSV(int(255 - randC), 255, maxBrightness);
leds[mid - 1 - drop_dot] = CHSV(int(255 - randC), 255, maxBrightness);
FastLED.show();
drop_dot--;
drop_time = millis();
for (int k = pre_si + 1; k > si - 1; k--)
{
while ( millis() - triger_time < int(interval / (pre_si - si) + 2))
{
if ((drop_dot > k + 3 ) && (millis() - drop_time > drop_interval))
{
leds [mid + drop_dot + 1] = CRGB::Black;
leds [mid - 1 - drop_dot - 1] = CRGB::Black;
leds[mid + drop_dot] = CHSV(int(255 - randC), 255, maxBrightness);
leds[mid - 1 - drop_dot] = CHSV(int(255 - randC), 255, maxBrightness);
FastLED.show();
drop_dot--;
drop_time = millis();
}
leds[mid + k] = CRGB::Black;
leds[mid - 1 - k] = CRGB::Black;
}
FastLED.show();
triger_time = millis();
}
}
// --------------------------------------------------------------------------------------------------
if (si == 0 && pre_si == 0 && drop_dot > -1 && (millis() - drop_time > drop_interval))
{
leds [mid + drop_dot + 1] = CRGB::Black;
leds [mid - 1 - drop_dot - 1] = CRGB::Black;
leds[mid + drop_dot] = CHSV(int(255 - randC), 255, maxBrightness);
leds[mid - 1 - drop_dot] = CHSV(int(255 - randC), 255, maxBrightness);
if (drop_dot == 0)
{
leds [mid + drop_dot] = CRGB::Black;
leds [mid - 1 - drop_dot] = CRGB::Black;
}
FastLED.show();
drop_dot--;
drop_time = millis();
}
pre_si = si;
}