Andreas, it depends on the HiFiBerry dac.... many HiFiBerry Hat boards have duplicate holes that another gpio strip can be soldered to.
https://www.modmypi.com/wire-solder-and-...pin-2-x-20
There are also duplicator boards, a sort of "in-the middle-connector"
https://www.element14.com/community/docs...8#overview
As to which pins are available for the remote you should check with HiFiBerry for your chosen board.
https://support.hifiberry.com/hc/en-us
Here is an example...
https://support.hifiberry.com/hc/en-us/c...te-control-
The remote receiver uses 3 pins... power @ 3.3 volts, ground, and a signal pin...(often gpio pin 27)
The ground and 3.3v shouldn't be a problem but check the current useage of the HiFiBerry Hat as there is a current limit on the 3.3v pin. (There is a work-around using the 5v gpio pin and a regulator. If you need that let me know and I can post details)
Bob
https://www.modmypi.com/wire-solder-and-...pin-2-x-20
There are also duplicator boards, a sort of "in-the middle-connector"
https://www.element14.com/community/docs...8#overview
As to which pins are available for the remote you should check with HiFiBerry for your chosen board.
https://support.hifiberry.com/hc/en-us
Here is an example...
https://support.hifiberry.com/hc/en-us/c...te-control-
The remote receiver uses 3 pins... power @ 3.3 volts, ground, and a signal pin...(often gpio pin 27)
The ground and 3.3v shouldn't be a problem but check the current useage of the HiFiBerry Hat as there is a current limit on the 3.3v pin. (There is a work-around using the 5v gpio pin and a regulator. If you need that let me know and I can post details)
Bob
----------
bob
bob