Gatekeeper

From Nottinghack Wiki
Jump to: navigation, search

Gatekeeper is the first node of our Hackspace Instrumentation project to go live and is responsible for access control to the space through the front "Airlock" door.

Contents

Pics

Source Code

The firmware that runs on the arduino cane be found here
https://github.com/NottingHack/Gatekeeper
The code for the database and the process that run on Holly can be found here
https://code.google.com/p/nottinghack-instrumentation/

Schematic

Gatekeeper Shield.png

Station Controller Interface.png

Logic Flow

Gatekeeper Logic Flow.jpg

Quick Breakdown

  • Arduino with Wiznet shield
  • RFID reader
  • Doorbell button (interrupt pin)
  • magnetic release (MOSFET switch 12v)
  • Magnetic contact
  • Doorbell sounder (Relay) - activated either by attached doorbell button, or doorbell on outer door (connected to main LED Matrix display)
  • Magnetic release status led's red/blue (TODO)
  • Matrix keypad and HD44780 LCD controlled via I2C AtTiny2313
  • MQTT
  • MQTT scripts on holly push door opened & last man switch events to irc twitter and log
  • Card numbers in 'Instrumentation' MySQL database on Holly
  • Database managed by HMS

Notes

6 Core alarm cable run to airlock door

  • magnetic contact on black and white core
  • door magnetic release green and yellow cores
  • last man switch on blue and red cores
Personal tools
Namespaces

Variants
Actions
Navigation
Useful Pages
Communication and Information
Interaction
Toolbox