awesome work! although i think you meant to say "flip the switch to allow the elevator to operate normally when sudoroom is open (switch position OFF), and make sure to flip the switch back ON (elevator lockout enabled) when you are closing sudoroom and leaving" also, if the raspberry pi crashes it is not guaranteed that it will lower the GPIO pin and allow normal operation of the elevator. You should consider a watchdog program that does something if the raspi stops responding. -jake Marc Juul wrote: Hi sudoers. The sudo room elevator is now hooked into the sudo room access control system. Things you should know: Only the ability to use the elevator from downstairs is under access control. When you use door.sudoroom.org to open the outer street-level door it will also allow you to use the elevator for the next 40 seconds. When you go to door.sudoroom.org you will notice that there is a new button for the elevator. You only need to use this if you are not also unlocking the street-level door. This will allow you to use the elevator for the next 20 seconds. The elevator button on door.sudoroom.org does not call the elevator, it only disengages the lockout so that pressing the button will call the elevator. There is a manual override switch mounted just outside of the door leading into the sudo room space. You can and SHOULD use this to disable elevator access control when you are in the space, but BE SURE TO ENABLE ACCESS CONTROL IF YOU ARE THE LAST TO LEAVE. If the raspberry pi crashes, then the access control will disable and the elevator will function normally. -- Marc Juul