Walking up and down the stairs is good for our heart but it is not good for our knee since it triggers early osteoarthritis.
Light up stairs as you walk.
Or a on delay could be set so that as you go up the stair the steps ahead will light up whilst the steps behind will turn off.
As you step on the first stair on the way up or down use pwm to ramp up the brightness on the led strip for the first stair to full.
This can be further modified to also have a sensor at the top of the stairs and reverse the count.
They detect your movement and will illuminate the stairs in front of you.
Then as you pass they shut off behind you thus saving on energy.
When we walk up and down the stairs the load in our knee is 3 5 times our weight.
Therefore we are suggested to hold on on something while we are walking up and down.
At the same time ramp up the brightness on the next stair to say 2 3 brightness and the second one after that up to 1 3 brightness.
Each count lights up a step until all steps are lit when you reach the top.
The lights are automatically triggered once someone steps onto the first step.