arduino lm35

LM35是NS公司生产的集成电路温度传感器系列产品之一，它具有很高的工作精度和较宽的线性工作范围，该器件输出电压与摄氏温度线性成比例。因而，从使用角度来说， LM35与用开尔文标准的线性温度传感器相比更有优越之处，LM35无需外部校准或微调，可以提供±1/4℃的常用的室温精度。

float temp;
int tempPin = 0;

void setup()
{
  Serial.begin(9600);
}
void loop()
{
  temp = analogRead(tempPin);
  temp = temp * 0.48828125;
  Serial.print("TEMPRATURE = ");
  Serial.print(temp);
  Serial.print("*C");
  Serial.println();
  delay(1000);
}

arduino hc-sr04

HC-SR04 超声波测距模块可提供2cm-400cm 的非接触式距离感测功能，. 测距精度可达高到3mm；模块包括超声波发射器、接收器与控制电路。

const int trigPin = 2;
const int echoPin = 4;

void setup() {
  // initialize serial communication:
  Serial.begin(9600);
}
void loop()
{
  // establish variables for duration of the ping, 
  // and the distance result in inches and centimeters:
  long duration, inches, cm;
// The sensor is triggered by a HIGH pulse of 10 or more microseconds.
  // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
  pinMode(trigPin, OUTPUT);
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
// Read the signal from the sensor: a HIGH pulse whose
  // duration is the time (in microseconds) from the sending
  // of the ping to the reception of its echo off of an object.
  pinMode(echoPin, INPUT);
  duration = pulseIn(echoPin, HIGH);
// convert the time into a distance
  inches = microsecondsToInches(duration);
  cm = microsecondsToCentimeters(duration);
Serial.print(inches);
  Serial.print("in, ");
  Serial.print(cm);
  Serial.print("cm");
  Serial.println();
delay(100);
}
long microsecondsToInches(long microseconds)
{
  // According to Parallax's datasheet for the PING))), there are
  // 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
  // second).  This gives the distance travelled by the ping, outbound
  // and return, so we divide by 2 to get the distance of the obstacle.
  // See: http://www.parallax.com/dl/docs/prod/acc/28015-PING-v1.3.pdf
  return microseconds / 74 / 2;
}
long microsecondsToCentimeters(long microseconds)
{
  // The speed of sound is 340 m/s or 29 microseconds per centimeter.
  // The ping travels out and back, so to find the distance of the
  // object we take half of the distance travelled.
  return microseconds / 29 / 2;
}

结合

最后代码:

const int trigPin = 13;
const int echoPin = 12;

float temp;
int tempPin = 0;
void setup() {
  Serial.begin(9600);
}
void loop()
{
  long duration, inches, cm;
pinMode(trigPin, OUTPUT);
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
pinMode(echoPin, INPUT);
  duration = pulseIn(echoPin, HIGH);
cm = microsecondsToCentimeters(duration);
Serial.print(cm);
  Serial.print("cm");
  Serial.println();
  temp = analogRead(tempPin);
  temp = temp * 0.48828125;
  Serial.println(temp);
  delay(1000);

}
long microsecondsToInches(long microseconds)
{
  return microseconds / 74 / 2;
}
long microsecondsToCentimeters(long microseconds)
{
  return microseconds / 29 / 2;
}