From 66877a54b1fe1b8e8e53f57ff1307edc745d7e6f Mon Sep 17 00:00:00 2001
From: nilo <dh@gocept.com>
Date: Sat, 31 Oct 2020 12:39:34 +0100
Subject: [PATCH] add led

---
 ebk_co2ampel/ebk_co2ampel.ino | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/ebk_co2ampel/ebk_co2ampel.ino b/ebk_co2ampel/ebk_co2ampel.ino
index a286c23..817a192 100644
--- a/ebk_co2ampel/ebk_co2ampel.ino
+++ b/ebk_co2ampel/ebk_co2ampel.ino
@@ -1,6 +1,9 @@
 #include <Arduino.h>
 #include "MHZ19.h"
 #include "SSD1306Wire.h"
+
+#include <Adafruit_NeoPixel.h>
+
 #define RX_PIN 16
 #define TX_PIN 17
 #define BAUDRATE 9600
@@ -10,6 +13,11 @@ MHZ19 myMHZ19;
 HardwareSerial mySerial(1);
 SSD1306Wire  display(0x3c, 21, 22);
 
+// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
+// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
+Adafruit_NeoPixel pixels = Adafruit_NeoPixel(1, 4, NEO_GRB + NEO_KHZ800);
+ 
+
 unsigned long getDataTimer = 0;
 int lastvals[120];
 int dheight;
@@ -29,7 +37,9 @@ void setup()
   for (int x; x <= 119; x = x + 1) {
     lastvals[x] = -1;
   }
-
+pixels.begin(); // This initializes the NeoPixel library.
+pixels.setPixelColor(0, pixels.Color(255,0,0)); // Moderately bright green color.
+pixels.show(); 
 }