diff --git a/sketches/led-driver/led-driver.ino b/sketches/led-driver/led-driver.ino
new file mode 100644
index 0000000..44e9481
--- /dev/null
+++ b/sketches/led-driver/led-driver.ino
@@ -0,0 +1,62 @@
+/*
+#include <stdint.h>
+uint8_t dataPin = 13;
+uint8_t red = 200;
+uint8_t green = 200;
+uint8_t blue = 200;
+
+// f=16MHz -> T=0,0625µs
+uint8_t T0H = 5;  // == 0.3125µs ~ 0.4 µs (+- 150ns) == [0.25, 0.55] µs
+uint8_t T1H = 11; // == 0.6875µs ~ 0.8 µs (+- 150ns) == [0.65, 0.95] µs
+uint8_t T0L = 12; // == 0.7500µs ~ 0.85µs (+- 150ns) == [0.70, 1.00] µs
+uint8_t T1L = 6;  // == 0.3750µs ~ 0.45µs (+- 150ns) == [0.30, 0.60] µs
+uint8_t RES = 51; //  > 50  µs
+*/
+#define dataPin 13
+
+#define red 0
+#define green 0
+#define blue 255
+
+#define ONE ({digitalWrite(dataPin, HIGH); wait5; digitalWrite(dataPin, LOW); wait12;})
+#define ZER ({digitalWrite(dataPin, HIGH); wait11; digitalWrite(dataPin, LOW); wait6;})
+#define RESET ({digitalWrite(dataPin, LOW); delayMicroseconds(51);})
+
+#define wait5 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
+#define wait6 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
+#define wait11 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
+#define wait12 __asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t")
+
+void setup()
+{
+  pinMode(dataPin, OUTPUT);
+  digitalWrite(dataPin, LOW);
+}
+
+void loop()
+{
+  (red & B1000000) ? ONE : ZER;
+  (red & B0100000) ? ONE : ZER;
+  (red & B0010000) ? ONE : ZER;
+  (red & B0001000) ? ONE : ZER;
+  (red & B0000100) ? ONE : ZER;
+  (red & B0000010) ? ONE : ZER;
+  (red & B0000001) ? ONE : ZER;
+  (green & B1000000) ? ONE : ZER;
+  (green & B0100000) ? ONE : ZER;
+  (green & B0010000) ? ONE : ZER;
+  (green & B0001000) ? ONE : ZER;
+  (green & B0000100) ? ONE : ZER;
+  (green & B0000010) ? ONE : ZER;
+  (green & B0000001) ? ONE : ZER;
+  (blue & B1000000) ? ONE : ZER;
+  (blue & B0100000) ? ONE : ZER;
+  (blue & B0010000) ? ONE : ZER;
+  (blue & B0001000) ? ONE : ZER;
+  (blue & B0000100) ? ONE : ZER;
+  (blue & B0000010) ? ONE : ZER;
+  (blue & B0000001) ? ONE : ZER;
+  RESET;
+}
+
+