Door lock open/close sensing

[imrehg]

Talking to Devry, might be possible to set up hackerspace open/close status by actually sensing whether the lock on the door (on the 4th floor) is open or closed. Florian was trying to set up something like that before, not sure how far that got.

Our idea is to use a Hall effect sensor to check whether the lock's deadbolt is closed or not. Likely parts needed:

• Hall effect sensor (if I2C, that's better, likely analog only)
• Analog-to-Digital converter (ADC), to turn analog to I2C signal for better communication (optional)
• Circuit board for these
• 3D printed mount to place it within the lock's housing
• sticky tape for attaching the mount
• wiring
• network-enabled microcontroller or computer for gateway
• software update to handle this data (instead of EasyCard)

Further planning, part selection, and design is needed. But when it's done, it should be more reliable, straightforward, and probably need less software/hardware too.

[kaicarver]

Florian and I already put in a switch that detects when the door is locked or unlocked. AFAIK it works, just need to connect the wires to an Arduino or whatever. I didn't know that's what you guys were talking about that evening, maybe if you had mentioned it at the meeting we could have discussed it. But if you want to do something different, that's fine.