Notenschlüssel neues Projekt hinzu

firmware/firmware.fuses.conf

@@ -0,0 +1,4 @@
+fuses_lo = 0xe2
+fuses_hi = 0xdf
+fuses_ext = 0xff
+lock_byte = 0xff

firmware/ws2812_led_fading/ws2812_led_fading.ino

@@ -0,0 +1,56 @@
+/*****************************************************************************
+ * 
+ * P0211 LED fading
+ * This is for music symbol with fading rgb backlight
+ * put this to a TNY85 with 8 MHz internal oscillator
+ * Color changes slightly every 100ms, so one cycle is about 3 minutes 
+ * 
+ **************************************************************************** 
+ * 
+ * 2025-10-05 xsider  created for C-Hack
+ * 
+ ****************************************************************************/
+
+
+#include <Adafruit_NeoPixel.h>
+
+
+#define NUMPIXELS      45
+#define PIN  2
+#define DELAY 100
+
+
+Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
+  
+void setup() {
+ 
+  pixels.begin();
+}
+
+void loop() 
+{
+  uint8_t red;
+  uint8_t green;
+  uint8_t blue;
+  /* this are the start values for every interation loop */
+  uint8_t settingstableRed[] = { 0xFF,0xFF, 0x00, 0x00, 0x00, 0xFF, 0xFF,  };
+  uint8_t settingstableGreen[] = { 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0xff } ;
+  uint8_t settingstableBlue[] = { 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff };
+  /* which direction should the color fade to */
+  int8_t dirRed[] = {0,-1,0,0,1,0,0};
+  int8_t dirGreen[] = {1,0,0,-1,0,1,-1};
+  int8_t dirBlue[] = {0,0,1,0,0,0,-1};
+  for ( int k=0; k<7;k++) { 
+    for (int i=0;i<=255;i++) {
+      red = settingstableRed[k] + dirRed[k]*i ;
+      green = settingstableGreen[k] + dirGreen[k]*i;
+      blue = settingstableBlue[k] + dirBlue[k]*i;
+      for (int l=0;l<NUMPIXELS;l++) {
+        pixels.setPixelColor( l, pixels.Color(red,green,blue) );
+      }
+      pixels.show();
+      delay(DELAY);    
+    }
+  }
+
+}

firmware/ws2812_led_fading_2025-10-05.hex

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readme.md

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+# P0211 Notenschlüssel
+
+[alt Notenschlüssel](bilder/notenschluessel_beleuchtet.jpg "Notenschlüssel Beleuchtet")
+
+Notenschlüssel für Tür vom Musikraum vom Liederkranz Concordia.  
+Beleuchtet mit LED-Streifen mit WS8212b-LEDs. Die Firmware für die Ansteuerung der LEDs befindet sich in einem ATTiny85.  
+Die Farbe wechselt langsam mit einem Zyklus von ca. 3 Minuten.  
+
+## Quellen:
+
+Notenschlüssel [https://commons.wikimedia.org/wiki/File:IEC_60417_-_Ref-No_5037.svg](https://commons.wikimedia.org/wiki/File:IEC_60417_-_Ref-No_5037.svg)
+
+## Änderungshistorie
+
+|Datum     |Änderung |Name  |
+|----------|---------|------|
+|2025-10-03|erstellt |xsider|