arduino光敏电阻控制灯带的代码
时间: 2023-07-31 13:10:23 浏览: 178
以下是使用光敏电阻控制灯带亮度的基本Arduino代码:
```c++
const int photoResistorPin = A0; // 光敏电阻连接的模拟输入引脚
const int ledPin = 9; // 灯带连接的数字输出引脚
void setup() {
pinMode(ledPin, OUTPUT); // 设置灯带引脚为输出模式
Serial.begin(9600); // 打开串口通信,用于调试
}
void loop() {
int photoResistorValue = analogRead(photoResistorPin); // 读取光敏电阻的模拟值
int ledBrightness = map(photoResistorValue, 0, 1023, 0, 255); // 将光敏电阻的值映射到灯带的亮度范围内
analogWrite(ledPin, ledBrightness); // 设置灯带的亮度
Serial.println(ledBrightness); // 将亮度值打印到串口,用于调试
delay(100); // 等待一段时间,避免频繁读取和设置
}
```
这段代码使用`analogRead()`函数读取光敏电阻的模拟值,然后使用`map()`函数将该值映射到灯带的亮度范围内。最后使用`analogWrite()`函数设置灯带的亮度。在循环中加入适当的延迟可以避免频繁读取和设置,提高代码效率。
相关问题
arduino电位器控制舵机然后光敏电阻控制灯带的代码
好的,以下是Arduino电位器控制舵机然后光敏电阻控制灯带的代码示例。请将舵机和光敏电阻连接到Arduino的相应引脚,然后上传以下代码:
```
#include <Servo.h>
Servo myservo; // create servo object to control a servo
int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the potentiometer
int ledPin = 9; // LED connected to digital pin 9
int lightVal; // variable to read the value from the light-dependent resistor
void setup() {
myservo.attach(3); // attaches the servo on pin 3 to the servo object
pinMode(ledPin, OUTPUT); // set the LED pin as an output
Serial.begin(9600); // initialize serial communication at 9600 bits per second
}
void loop() {
val = analogRead(potpin); // read the value from the potentiometer
val = map(val, 0, 1023, 0, 179); // scale the value to servo angle range
myservo.write(val); // set the servo position based on the scaled value
delay(15);
lightVal = analogRead(A0); // read the value from the light-dependent resistor
if (lightVal < 400) { // if the light is dim
digitalWrite(ledPin, HIGH); // turn on the LED
} else { // if the light is bright
digitalWrite(ledPin, LOW); // turn off the LED
}
Serial.println(lightVal); // print the light value to the serial monitor
delay(500); // wait for half a second
}
```
这段代码会从电位器读取模拟值,并将其映射到舵机的角度范围内。然后,代码会从光敏电阻读取模拟值,并根据光线的强度控制LED灯带的亮度。在代码中,我将LED连接到数字引脚9,您可以根据需要更改此引脚。
用arduino ide开发,用光敏电阻控制ws2512灯带(调用fastled库内的函数控制灯带),灯带初始状态下亮蓝灯,光敏电阻阻值>600时,灯光改变为红色。光敏电阻输入口为a1,a2,a3,灯带输出口为a4,a5,a6,每条灯带初始亮30个灯,并使用millis进行多任务处理,计算光敏电阻在120000ms内感应到物体(阻值>600)的次数,感应次数越多,灯带亮起的灯数量越少。12000ms过后,计数归0,灯带亮起数量回归初始值30个,请直接给出代码
以下是用Arduino IDE开发,使用光敏电阻控制WS2812灯带的代码:
```
#include <FastLED.h>
#define LED_PIN 4
#define NUM_LEDS 30
CRGB leds[NUM_LEDS];
#define PHOTO_RESISTOR_1 A1
#define PHOTO_RESISTOR_2 A2
#define PHOTO_RESISTOR_3 A3
unsigned long previousMillis = 0;
const long interval = 120000; // 120 seconds
int count = 0;
void setup() {
FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
pinMode(PHOTO_RESISTOR_1, INPUT);
pinMode(PHOTO_RESISTOR_2, INPUT);
pinMode(PHOTO_RESISTOR_3, INPUT);
for(int i = 0; i < NUM_LEDS; i++) {
leds[i] = CRGB(0, 0, 255); // initial color: blue
}
FastLED.show();
}
void loop() {
unsigned long currentMillis = millis();
if(currentMillis - previousMillis >= interval) {
// reset count and turn on all LEDs
count = 0;
for(int i = 0; i < NUM_LEDS; i++) {
leds[i] = CRGB(0, 0, 255); // blue
}
} else {
// check light sensor values and adjust LED color and brightness
int sensorValue1 = analogRead(PHOTO_RESISTOR_1);
int sensorValue2 = analogRead(PHOTO_RESISTOR_2);
int sensorValue3 = analogRead(PHOTO_RESISTOR_3);
if(sensorValue1 > 600 || sensorValue2 > 600 || sensorValue3 > 600) {
// increment count if light sensor detects object
count++;
if(count > 10) {
// decrease LED brightness if object detected more than 10 times
int brightness = map(count, 10, 120, NUM_LEDS, 0);
for(int i = 0; i < NUM_LEDS; i++) {
if(i < brightness) {
leds[i] = CRGB(255, 0, 0); // red
} else {
leds[i] = CRGB(0, 0, 0); // off
}
}
} else {
// turn on all LEDs in blue color
for(int i = 0; i < NUM_LEDS; i++) {
leds[i] = CRGB(0, 0, 255); // blue
}
}
} else {
// turn on all LEDs in blue color
for(int i = 0; i < NUM_LEDS; i++) {
leds[i] = CRGB(0, 0, 255); // blue
}
}
}
FastLED.show();
}
```
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