Lights on the facade of the lab

Status

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.

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.

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.

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;