I was trying to port the TLC5940 ( see this topic ) library to the Pinoccio board. However, I assumed that the 3V3 port would output 3.3V when used with the GND port. I've tried to measure its Voltage in both my pinoccio boards and they don't seem to provide anything besides what seems to be a leakage voltage (something close to 0.1V, but fluctuating).
1) Either both boards have a problem or the 3V3 port is used for something else. Any clues?
2) Can I use any other port to power other ICs?
3) Update: I've just saw from this link that It might be the case that both 3V3 ports are turned off. If so, how do I turn them on again?