Available GPIOs?

Raspberry Pi Network HATs 3G/4G&LTE Base HAT
1

Hi,

What GPIO pins are available for customer use? That is, what pins can be used for other components like LEDs, sensors, etc.?

I want to be sure I’m not accidentally using pins used by the HAT.

TIA,
-T

2

I think i found the answer (below). But… does this mean the 5v power supply pins are off-limits?

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THanks,
-T

3

The key difference between the GPIO and Power lines(5V, GND, 3.3V) is that, GPIO is for data/control signals, while power lines are for supplying power.

GPIO are off-limits, while power lines are not. Hence you can use the 5V, 3v3 and GND pins.

4

Great.

But the GPIOs not marked in blue (above) are still available to the user?

5

Yes, the GPIOs not marked in blue are the available one.