tm1637 + sr04

gistfile1.txt

#include <NewPing.h>
#include <TM1637Display.h>

const int CLK = 2; //Set the CLK pin connection to the display
const int DIO = 3; //Set the DIO pin connection to the display

#define TRIGGER_PIN  12  // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN     11  // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 200 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.

TM1637Display display(CLK, DIO);  //set up the 4-Digit Display.

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.

void setup() {
  display.setBrightness(0x0a);  //set the diplay to maximum brightness
}

void loop() {
  display.showNumberDec(sonar.ping_cm()); //Display the Variable value;
  delay(50);                     // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
}