7
Creating your own lighting schedule
The schedule is very simple. Once you have understood these few concepts, you will
be able to create any schedule of your choice.
The system checks the current time and takes the step that is just before it and the
step that comes immediately after, then it calculates the light level between these two
steps, and applies this value to the light output. When the clock reaches the next step,
that step becomes the one just before the current time, and the cycle restarts.
By using 2 steps, there are 4 possible combinations:
Both steps are at the same time and have the same level:
This combination is useless. Nothing happens and the system carries on to the next
step.
Both steps are at the same time but have different levels:
Creates an instant change in the light level, light flipping a switch.
Both steps have different times, but have the same level:
Creates a plateau, a period of time during which the lighting remains at a stable level.
Both steps have different times and different levels:
Creates a ramp where the lighting transitions from one level to another gradually.
Example:
Take for example a very common scenario where we simulate a basic sunrise / sunset.
In the morning, I want my lights to turn on gradually starting at 6h00 and I want a level
of 60%, 15 minutes later. Then I want my lights to turn off at 22h00 after a 5 minutes
ramp.
It’s done with only 4 steps :
Step 1 - Time : 6h00 / Level 0%
Step 2 - Time : 6h15 / Level 80%
Step 3 - Time : 21h55 / Level 80%
Step 4 - Time : 22h00 / Level 0%
From 6h00 to 6h15, lights go from 0% to 60% gradually (1% / 15 seconds)
From 6h15 to 21h55, lights are stable at 60%
From 21h55 to 22h00, lights go from 60% to 0% gradually (1% / 5 secondes)
From 22h00 to 6h00 the next day, lights stay off at 0%
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