Using the v003 library from a few days ago (without changing the pins) the pin config is
- TLC pin 28 -> LED (channel 1) short leg (cathode) -> LED1 long leg (anode) -> +5V
- TLC pin 1 -> LED (channel 2) cathode - anode -> +5V
- ...
- TLC pin 15 (lower right pin if the u is on top) - > LED (channel 16)
- TLC pin 16 (XERR) -> nothing
- TLC pin 17 (SOUT) -> nothing
- TLC pin 18 (GSCLK) -> Arduino pin 3
- TLC pin 19 (DCPRG) -> +5V
- TLC pin 20 (IREF) - > 2.2Kohm resistor to GND (this determines max current through each output, Riref value = 39.06 / (desired current in A))
- TLC pin 21 -> +5V
- TLC pin 22 -> GND
- TLC pin 23 (BLANK) -> Arduino pin 10
- TLC pin 24 (XLAT) -> Arduino pin 9
- TLC pin 25 (SCLK) -> Arduino pin 6
- TLC pin 26 (SIN) -> Arduino pin 4
- TLC pin 27 (VPRG) -> GND
Make sure you have a resistor (see above) between Iref (pin 20) and ground, and also that VPRG (pin 27) is grounded. Hope this helps! I'll put this at the top of all the examples.