D3 == Gpio? on grovepi zero

When I connect my IR Transmitter to D3 on the Grove Pi…what GPIO is this?
I gave to point the code to output to a specific pin…


Hi @pete.hollyer,

The GrovePi uses I2C to communicate with the Raspberry Pi, so there’s absolutely no correlation between the ports on the GrovePi and the Raspberry Pi.
The only exception is the RPISER port on the GrovePi which actually is the serial port from the Raspberry Pi passed on to the GrovePi.

Maybe these visual diagrams offer you greater detail:

Thank you!

Thanks for the very fast answer!