This is a project to have motion controlled stair lights that would be a warmer white at night and be a cold white in the morning. The project has been a continious learning experience from interaction design to creating a safe circuit.
I started out the project with the belief that there would be a physical user interface for inputing when they woke up, and went to bed. Through my prototyping I found this is really hard to get right and detracted too much from the core parts of the project. So I scrapped the physical interface and hardcoded a wake-time of 6 and a bed-time of 8.
This is a video from prototyping when I hooked up an RTC and 4 I2C 7 segment displays to an Arduino to learn how to use an RTC and I2C.
Post on Instagram: https://www.instagram.com/p/CM0wN9KpeT8/
Then I focused on getting the pwm curve values for the CCT LED strip:
Then I hooked up an Arduino Ethernet Shield and set a Real Time Clock to NTP.
Eventually I started putting the pieces together and put things on a board. A 24v PSU, the same one from Control My Lights, a DC-DC converter, the Ardiuno Mega knock-off / Ethernet Shield, LED PWM controller board and motion controller input board (ethernet break out)
Now I am moving everything into it’s own boxes and connecting them with SpeakOn and Powercon connectors.