New Guide in the Learn System! Circadian Pi Desk Light. Exposing ourselves to blue light in the morning helps us wake up. In the evening we can wind down with red lights which thanks to the avoidance of blue wavelengths helps us to produce melatonin which makes us drowsy. The Raspberry Pi is the perfect device to help with the timing and driving of long NeoPixel strips. In this post we will show how just a few wires, some code, and a tiny bit of hardware, we can have a light with some circadian awareness. // Read more: original article.
