delayMicroseconds(80); //DHT11 会拉高到HIGH 80us 后开始发送数据; /// 以下连续读入 5 bytes (40 bits), 最后的 byte 是 checksum 校验值 for (int i = 0; i < 5; i++) dat[i] = readData(); //接收温湿度资料,校验位元; pinMode(dhPin, OUTPUT); // 改为 Output mode, 准备拉高HIGH...
The Arduino can accept up to 5v on a analog input. Our battery voltage can range as high as 17vdc in certain charge cycles, so we designed a voltage divider that would provide 5v at 17v battery voltage, and less at various lower voltages. See http://en.wikipedia.org/wiki/Voltage_divid...
} void loop() { currentState = digitalRead(sensorPin); if (currentState == HIGH && lastState == LOW) { delay(1); if (RelayState == HIGH) { digitalWrite(relayPin, LOW); RelayState = LOW; } else { digitalWrite(relayPin, HIGH); RelayState = HIGH; } } lastState = currentState; }...
37款传感器与执行器的提法,在网络上广泛流传,其实Arduino能够兼容的传感器模块肯定是不止这37种的。鉴于本人手头积累了一些传感器和执行器模块,依照实践出真知(一定要动手做)的理念,以学习和交流为目的,这里准备逐一动手尝试系列实验,不管成功(程序走通)与否,都会记录下来—小小的进步或是搞不掂的问题,希望能够抛砖引...
最后,我们来看一下唯一一种通过GPIO连接通信的传感器,即霍尔传感器。霍尔传感器仅检测磁场的存在或不存在。因此,它的输出是数字信号:“low(低电平)”表示磁场存在;“high(高电平)”表示没有磁场。 在Arduino上,数字信号输入和输出(简称IO)的工作范围为5V电平,因此我们必须将跳线移至5V设置。
current_sense.gain_b *= -1; // 初始化磁传感器硬件 sensor.init(); // 将电机连接到传感器 motor.linkSensor(&sensor); // 驱动程序配置 // power supply voltage [V] driver.voltage_power_supply = 24; driver.init(); //连接电机和驱动器 ...
(SENSOR_PIN,INPUT);// 设置模拟口3为输入模式}voidloop(){current_state=digitalRead(SENSOR_PIN);//读入传感器的电平状态/**假如之前的信号状态是低,现在的信号状态是高,代表传感器的被触碰到了*/if(last_state==LOW&¤t_state==HIGH){Serial.println("touch detected by sensor");//打印信号if(light...
HIGH); // Turn the sensor ON delay(10); // wait 10 milliseconds val = analogRead(sensorPin); // Read the analog value form sensor digitalWrite(sensorPower, LOW); // Turn the sensor OFF return val; // send current reading }
// indicates whether MPU interrupt pin has gone high void dmpDataReady() { mpuInterrupt = true; } // === // === INITIAL SETUP === // === void setup() { // join I2C bus (I2Cdev library doesn't do this automatically) #if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE Wire.begi...
678#define SensorLED 13 #define SensorINPUT 3 //Connect the sensor to digital Pin 3 which is Interrupts 1. unsigned char state = 0; void setup() { pinMode(SensorLED, OUTPUT); 91011 pinMode(SensorINPUT, INPUT); attachInterrupt(1, blink, FALLING);// Trigger the blink functi...