}voidloop(){// read the input from the analog pinanalogValue = analogRead(LIGHT_SENSOR);// Check if it's above a specific threshold and turn the LED on or offif(analogValue <700) digitalWrite(LED, HIGH);// turn on LEDelsedigitalWrite(LED, LOW);// turn off LED}...
使用analogRead()函数从模拟引脚读取光敏电阻或LDR模块的AO引脚的值,或者使用digitalRead()函数从数字引脚读取LDR模块的DO引脚的状态。 cpp // 示例代码(光敏电阻) int sensorValue = analogRead(sensorPin); // 示例代码(LDR模块 - 模拟输出) int lightValue = analogRead(AO_PIN); // 示例代码(LDR模块 - 数字...
尽管LDR传感器也可以用于基于照明条件来控制设备,但其准确性不高。我们已经使用LDR传感器构建了许多光控应用程序: 使用LDR的Arduino光传感器电路 使用LDR和555定时器IC的黑暗检测器 简单的LDR电路使用RGB LED和LDR来检测光 Arduino混色灯 Arduino BH1750环境光传感器电路图 将BH1750光传感器与Arduino连接的电路图如下所示。
通过适当的数学公式或查找LDR的特性曲线,我们可以将测得的电阻值转换为对应的光照强度。 int sensorValue = analogRead(A0); // 读取LDR的模拟输入值 float voltage = sensorValue * (5.0 / 1023.0); // 将模拟值转换为电压 // 使用电压与光照强度之间的关系进行转换 float lightIntensity = 1000.0 / voltage;...
A method for modifying street light illumination by using sensor (LDR) which specialize in minimum electrical energy consumption. The sensors would detect the absence of natural light and will get automatically switched on and vice a versa. The brightness can be controlled through the Arduino. ...
在进行双色LED实验的过程中,我对LED的工作原理和使用有了更深刻的理解。通过建立电路、编写程序并将程序上传至Arduino Uno版,我成功地控制了双色LED的亮度和颜色,从红色变为绿色并且在交替时闪烁出混合颜色。在实验中,我也学会了如何使用面包板和跳线来组装电路,以及如何通过数字端口来控制LED的亮度和颜色。
In the else section, the LED will turn Off using the digitalWrite function. The serial monitor will print the line “The value of LDR is = sensorValue” with a delay of 1 ms. Conclusion Here we have summarized the things we have learned in this article: ...
The light level striking the LDR will change the blink rate of the internal LED connected to pin 13: const int ledPin = 13; // LED connected to digital pin 13 const int sensorPin = 0; // connect sensor to analog input 0 void setup() { pinMode(ledPin, OUTPUT); // enable output...
DC Temperature Sensor Module (3.3V-12V NTC-10K +/-10% Thermistor) R84.00 Special Offer KY-018 Light Detection Sensor Module (LDR Arduino) R6.09 Special Offer RAMPS 1.4 ARDUINO SHIELD R201.60 Special Offer Universal IR Infrared Sensor Receiver Module (KY-022) R23.95 Special Offer Triangul...
At the same time, the light intensity sensor is used to judge whether the street lamp is working properly. With this technology, the fault street lamp can be detected in time, which reduces the maintenance time and improves the work efficiency. Key words:ZigBee; Arduino; Automation; Sensor ...