How will you be programming the processor?
Is Driver Board / C1 a surface mount device?
Are the LEDs being powered by the Power Board?
Do they have their own power supply separate from the processor's power supply?
If you follow the TLC5940 datasheet to the letter, the connected LEDs should have a forward voltage <= 2.3 (the voltage drop through the LED driver is supposed to be >= 1). Is the forward voltage <= 2.3?
...I'm driving white LEDs, so the forward voltage is 3.5.
I am actually running the driver board from VBAT (no regulator) so that should give me a bit more headroom, right?
I assume the failure here would be that the LEDs wouldn't have enough voltage to light (or would be dim)?
Quote from: Brad Burleson on Mar 22, 2014, 01:36 am...I'm driving white LEDs, so the forward voltage is 3.5.From a 3.3 volt supply?
3.7 - 3.5 = 0.2 volts. I guess you're going to find out how the chip behaves.