Hallo,
ich experimentiere derzeit mit ioBroker und bin auf das gleiche Problem gestoßen (ebenfalls mit PI3B).
Offenbar betrifft es noch einige weitere Ports:
rpi2.0 2018-05-07 12:40:04.889 error Cannot setup port 27 as output: Error: Channel 27 does not map to a GPIO pin
rpi2.0 2018-05-07 12:40:04.883 error Cannot setup port 25 as output: Error: Channel 25 does not map to a GPIO pin
rpi2.0 2018-05-07 12:40:04.883 error Cannot setup port 20 as output: Error: Channel 20 does not map to a GPIO pin
rpi2.0 2018-05-07 12:40:04.882 error Cannot setup port 17 as output: Error: Channel 17 does not map to a GPIO pin
rpi2.0 2018-05-07 12:40:04.881 error Cannot setup port 14 as output: Error: Channel 14 does not map to a GPIO pin
rpi2.0 2018-05-07 12:40:04.881 error Cannot setup port 9 as output: Error: Channel 9 does not map to a GPIO pin
rpi2.0 2018-05-07 12:40:04.880 error Cannot setup port 6 as output: Error: Channel 6 does not map to a GPIO pin
rpi2.0 2018-05-07 12:40:04.880 error Cannot setup port 4 as output: Error: Channel 4 does not map to a GPIO pin
rpi2.0 2018-05-07 12:40:04.875 error Cannot setup port 2 as output: Error: Channel 2 does not map to a GPIO pin
Gruß
Volker