From c11fc035db6031a6d1e5d1ed7a236ad5ee35484f Mon Sep 17 00:00:00 2001
From: Stefan <stefan@unhb.de>
Date: Tue, 3 May 2022 22:19:00 +0200
Subject: [PATCH] =?UTF-8?q?Grundfunktion=20f=C3=BCr=20Ultraschallsensor=20?=
 =?UTF-8?q?und=20LED=20Licht?=
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---
 Abstandssensor.ino | 107 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 Abstandssensor.ino

diff --git a/Abstandssensor.ino b/Abstandssensor.ino
new file mode 100644
index 0000000..2b1bba4
--- /dev/null
+++ b/Abstandssensor.ino
@@ -0,0 +1,107 @@
+#include <NeoPixelBus.h>
+#include <NeoPixelSegmentBus.h>
+#include <NeoPixelAnimator.h>
+#include <NeoPixelBrightnessBus.h>
+
+
+// DEV or PROD Setup
+#define DEBUG
+
+// Only for ESP8266 D1 Mini
+#define ECHO 5    // D1
+#define TRIG 16   // D0
+#define POTI_IN 17  // A0, analog In
+
+#define DATA_PIN 3
+const uint16_t PixelCount =  8;
+NeoPixelBus<NeoGrbFeature, NeoEsp8266Dma800KbpsMethod> strip(PixelCount, DATA_PIN);
+
+long duration;  // Variable um die Zeit der Ultraschall-Wellen zu speichern
+float distance; // Variable um die Entfernung zu berechnen
+
+int poti;
+int percent=0;
+int colorSaturation=255;
+
+RgbColor red(colorSaturation, 0, 0);
+RgbColor green(0, colorSaturation, 0);
+RgbColor yellow(colorSaturation, colorSaturation, 0);
+RgbColor blue(0, 0, colorSaturation);
+RgbColor white(colorSaturation);
+RgbColor black(0);
+
+void setup() {
+
+  pinMode(TRIG, OUTPUT);  // TRIG-Pin: Output
+  pinMode(ECHO, INPUT);   // ECHO-Pin: Input
+    
+  #ifdef DEBUG
+  Serial.begin(9600);   // Baudrate: 115200
+  #endif
+  
+  // this resets all the neopixels to an off state
+  strip.Begin();
+  for(int i=0; i<PixelCount; i++) {strip.SetPixelColor(i, red);}
+  strip.Show();
+
+}
+
+void setColor(RgbColor c) {
+  for(int i=0; i<PixelCount; i++) {
+    strip.SetPixelColor(i, c);
+  }
+  strip.Show();
+}
+
+void setRed() {
+  setColor(red);
+}
+
+void setYellow() {
+  setColor(yellow);
+}
+
+void setGreen() {
+  setColor(green);
+}
+
+void loop() {
+
+
+  // Read poti (Value range 16 - 1024)
+  poti=analogRead(POTI_IN);
+
+  // Measure Distance
+  digitalWrite(TRIG, LOW);  delayMicroseconds(2);
+
+  // TRIG-Pin ist HIGH für 10 Microsekunden
+  digitalWrite(TRIG, HIGH);
+  delayMicroseconds(10);
+  digitalWrite(TRIG, LOW);
+  
+  // Liest das ECHO aus und speichert die Zeit von Senden / Empfangen in Microsekunden
+  duration = pulseIn(ECHO, HIGH);
+  
+  // Berechnung der Entfernung
+  // Da der Weg doppel ist: Hinweg - Rückweg, muss der Wert durch 2 geteilt werden
+  distance = duration * 0.034 / 2;
+
+  // Set color depending on poti
+  // We assume poti value/20 (resulting in range <1,5 cm - 100cm)
+  // Green if we are more than 50% above goal, yellow below 50% of goal, red at or below goal
+   
+  percent=distance/((float)poti/10)*100;
+
+  if      (percent >150) { setGreen(); }
+  else if (percent >100) { setYellow(); }
+  else {setRed(); }
+  
+  // Anzeige der Entfernung im seriellen Monitor
+  #ifdef DEBUG
+  Serial.println("Poti: " + String(poti));
+  Serial.println("Entfernung: " + String(distance) + "cm");
+  Serial.println("Percent: " + String(percent) + " of goal value");
+  #endif
+  delay(100);
+  
+}