Razberry + Raspberry GPIO port

[Solventus]

Hello, I have a Raspberry with a Razberry card.
Can I use the free GPIO pins?
I want to include a swich and to know its state.

Thanks a lot.

[ogroot]

Sure no problem. I also use the free pins in combination with a Razberry card.
Of course you cannot use the pins that are blocked by the Razberry card, but the free pins can.

[EdddieN]

As far as I know, the Razberry board uses Vcc, GND and the UART pins, the rest are there just to support the board.

I haven't tried but see the picture below, the pins within the heater are I2C, 1-wire and UART. The I2C seem to be ready for something not used like a future eeprom. BCM4 is connected to something but not sure what really is doing.

This is the Razberry 2 by the way.