Project/LightingTheFacade

Lights on the facade of the lab

Status

• Plan - to have all the lights on the outside controllable from software
• github issue
• The system is ready and operational

Implementation

• We installed LED lights on the facade
  • 2x30W on the street
  • 2x10W on the internal entryway
• For each of these we have a small relay
• All relays are controlled through a neomontana netcontrol via SNMP.

Cabling

• For each relay, we have a pair going to it though the cabling of the house
• We push 5V on those pairs
• All relays go to the patch panel in the work room:
  • Lecture room - pp 15
  • Work room - pp 18
  • Hackvarium - pp 7
• From that patch panel over pp 5 through cable WR2 they go to the rack in the coridor, to pp 2, and from it to the neomontana netcontrol
• On the netcontrol we use relays 5-7 to control this, and push 5V from a normal power supply.

Day/night detection

• patched sunwait
• It's easily calculable when it's day/night based just on your position and the time of day.
• ... and I don't care if it's too cloudy outside.

Logic

• It's all implemented in an extremely hacky php/shell script, stripped code and explanation in Bulgarian
• It loops every 60 seconds or skips the sleep if it receives a message on an unix domain socket.
• The force trigger is /tmp/lamptrigger, if it exists, it means that the lights are forced on.
  • The script only checks for that file, it never deletes it or anything else.
• Fetches the status of the lamps, the door, if it's light or dark outside.
• If the lights are on:
  • If it's day and the lamps aren't forced on, they're turned off;
  • If it's night, the door is locked and more than 15 minutes have passed since the locking, the lamps are turned off;
• If the lamps are off:
  • If they're forced, they're turned on;
  • If it's night and the door is unlocked (e.g. there are people in the lab), the lamps are turned on;

photos

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  Switchbox.jpg switchbox.jpg

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  Dvor.jpg dvor.jpg

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  Street1.jpg street1.jpg

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  Street2.jpg street2.jpg

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  Street3.jpg street3.jpg