Project Log

UnnaturalLight – Part 2: Electrical Design

Blinking a few LEDs… how hard can it be? As it turned out, harder than I thought it would be! As the LEDs draw about 1W each, and I am using 48 per lamp, thermal management is the main challenge. The desired function is simple enough – a controller that …

Project Log

UnnaturalLight – Part 1: Mechanical / Optical Design

Lamps come in all sorts of shapes and sizes. For this first design, I wanted something relatively simple and small, but easily scalable to larger designs later if necessary. What I settled on is a rectangular desk lamp made out of acrylic panels, with LED chips, mounted on a custom …

Project Log

UnnaturalLight – Adjustable Colour Temperature Lighting

Welcome to the first post of the blog series on Project UnnaturalLight, an LED lamp with adjustable colour temperature. Many Shades of White The sun changes colour throughout the day, as observed from a fixed point on Earth. In the morning, it looks orange/red, and as the day goes on, …