Historic/API
If you'd like things to use your hardware in the space in a fairly consistent way, consider exposing them to Noisebridge's awesome, semi-stable API. You can ask User:Malaclyps Danny to implement you a call or two by mailing him at [1]
Current API
Buzzes open the gate at 2169 Mission (only available within the space).
=== GET http://api.noisebridge.net/gate/
Returns {"ringing": True } if the buzzer is ringing.