From 2c748ea18a204c8b7d3f2df219f2a65e2c3d8273 Mon Sep 17 00:00:00 2001
From: coolneng <akasroua@gmail.com>
Date: Fri, 15 Nov 2019 23:55:30 +0100
Subject: [PATCH] Add Ultrasonic (HC-SR04) code

---
 Ultrasonic/Ultrasonic.arduino.avr.uno.elf | Bin 0 -> 34496 bytes
 Ultrasonic/Ultrasonic.arduino.avr.uno.hex | 187 ++++++++++++++++++++++
 Ultrasonic/Ultrasonic.ino                 |  47 ++++++
 3 files changed, 234 insertions(+)
 create mode 100755 Ultrasonic/Ultrasonic.arduino.avr.uno.elf
 create mode 100644 Ultrasonic/Ultrasonic.arduino.avr.uno.hex
 create mode 100644 Ultrasonic/Ultrasonic.ino

diff --git a/Ultrasonic/Ultrasonic.arduino.avr.uno.elf b/Ultrasonic/Ultrasonic.arduino.avr.uno.elf
new file mode 100755
index 0000000000000000000000000000000000000000..ffbba9e86120c434c8a34589c14df9a39908f639
GIT binary patch
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diff --git a/Ultrasonic/Ultrasonic.arduino.avr.uno.hex b/Ultrasonic/Ultrasonic.arduino.avr.uno.hex
new file mode 100644
index 0000000..3964a76
--- /dev/null
+++ b/Ultrasonic/Ultrasonic.arduino.avr.uno.hex
@@ -0,0 +1,187 @@
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diff --git a/Ultrasonic/Ultrasonic.ino b/Ultrasonic/Ultrasonic.ino
new file mode 100644
index 0000000..1b1d34d
--- /dev/null
+++ b/Ultrasonic/Ultrasonic.ino
@@ -0,0 +1,47 @@
+// Ultrasonic sensor
+#include <SR04.h>
+
+#define red 3
+#define yellow 4
+#define green 5
+#define echo 9
+#define trig 8
+SR04 sr04 = SR04(echo, trig);
+long length;
+
+void turnOff() {
+  digitalWrite(red, LOW);
+  digitalWrite(yellow, LOW);
+  digitalWrite(green, LOW);
+}
+
+void turnOn(int LED) {
+  turnOff();
+  digitalWrite(LED, LOW);
+}
+
+void setup(){
+  Serial.begin(9600);
+  pinMode(red, OUTPUT);
+  pinMode(yellow, OUTPUT);
+  pinMode(green, OUTPUT);
+  pinMode(echo, INPUT);
+  pinMode(trig, OUTPUT);
+}
+
+void loop() {
+  length = sr04.Distance();
+  Serial.println("Distancia: ");
+  Serial.println(length);
+  Serial.println("cm");
+
+  if(length < 8){
+    turnOn(red);
+  } else if (length < 15){
+    turnOn(yellow);
+  } else {
+    turnOn(green);
+  }
+
+  delay(100);
+}