diff --git a/arduino/controlled.pde b/arduino/controlled.pde
new file mode 100644
index 0000000..fb91985
--- /dev/null
+++ b/arduino/controlled.pde
@@ -0,0 +1,80 @@
+#include "Tlc5940.h"
+
+#define CH 3
+
+#define TLCCH(tlc_num, ch_num) ((tlc_num)*16 + (ch_num))
+
+int cpin[][CH] = {
+  {TLCCH(0, 2), TLCCH(0, 1), TLCCH(0, 0)},
+  {TLCCH(0, 5), TLCCH(0, 4), TLCCH(0, 3)},
+  {TLCCH(0, 8), TLCCH(0, 7), TLCCH(0, 6)},
+  {TLCCH(0, 12), TLCCH(0, 11),TLCCH(0, 10)},
+  {TLCCH(0, 15),TLCCH(0, 14),TLCCH(0, 13)},
+
+  {TLCCH(1, 2), TLCCH(1, 1), TLCCH(1, 0)},
+  {TLCCH(1, 5), TLCCH(1, 4), TLCCH(1, 3)},
+  {TLCCH(1, 8), TLCCH(1, 7), TLCCH(1, 6)},
+  {TLCCH(1, 12), TLCCH(1, 11), TLCCH(1, 10)},
+  {TLCCH(1, 15), TLCCH(1, 14), TLCCH(1, 13)},
+};
+#define cpinsets (sizeof(cpin)/sizeof(cpin[0]))
+
+/* cca 2.7ohm resistor per channel */
+int cmax[cpinsets][CH] = {
+  { 1600, 4000, 2200 },
+  { 1600, 4000, 2200 },
+  { 1600, 4000, 2200 },
+  { 1600, 3900, 2000 },
+  { 1600, 3700, 3000 },
+
+  { 1600, 4000, 2200 },
+  { 1600, 4000, 2200 },
+  { 1600, 3400, 3000 },
+  { 1600, 4000, 2200 },
+  { 1600, 3400, 3000 },
+};
+int c[cpinsets][CH];
+
+int wait = 10;
+
+void setup()
+{
+  Serial.begin(38400);
+  /* Call Tlc.init() to setup the tlc.
+     You can optionally pass an initial PWM value (0 - 4095) for all channels.*/
+  Tlc.init();
+  int i = 0, led = 0;
+  for (led = 0; led < cpinsets; led++)
+    for (i = 0; i < CH; i++)
+      c[led][i] = cmax[led][i];
+}
+
+/* One iteration of constant brightest white (useful for tuning constants for particular LEDs). */
+void white(int led)
+{
+  int i;
+  int mask = 1|2|4; // R, G, B
+  for (i = 0; i < CH; i++) {
+    c[led][i] = mask & (1 << i) ? cmax[led][i] : 0;
+  }
+}
+
+void loop()
+{
+  Tlc.clear();
+ 
+  int led, i;
+  for (led = 0; led < cpinsets; led++) {
+    for (i = 0; i < CH; i++) {
+      while (!Serial.available());
+      unsigned long s = (unsigned char) Serial.read();
+//      Serial.print(s, DEC);
+//      Serial.print(" ");
+      Tlc.set(cpin[led][i], s * cmax[led][i] / 256);
+    }
+  }
+//  Serial.println();
+
+  Tlc.update();
+}
+