I want to build an 4³ LED cube that is controlled by a TLC5940
(and an Arduino Uno).
I just assembled this circuit to test the IC:
I already soldered the LEDs together and all cathodes of a layer a connected to turn on and off the layer.
So the anodes of the LEDs will be connected to the IC.
In the example the cathodes are connected to the IC and the anodes go to 5V.
My idea was to connect the LEDs vice versa between GND and the TLC5940 and invert the values.
However, as soon as I disconnect an LED (or connect it vice versa) there is no more voltage at the ouput pins.
Is it possible to run my LED cube with the TLC5940?