App note: Intelligent lighting controller measures ambient light and tracks time

Implementation on ambient light and time tracking luminaires controller from MAXIM Integrated, Link here This reference design explains how to design an intelligent lighting controller that senses and measures the ambient light level with an ambient light sensor (ALS). Equipped with a real-time clock (RTC), the controller also knows when to turn lighting on or […]

App note: Light quality – White light parameters

App note from OSRAM on consistency of colors specifically white lights. Link here (PDF) White light is not the same as white light. When different light sources are used, color differences may become visible. To understand why this can happen, it is necessary to understand how people perceive color and light. Nevertheless, it is possible […]

LittleBits Hue lighting controller

Jeremy Blum has written an article about his latest project the¬†LittleBits Hue lighting controller: The LittleBits Hue Controller is an easy-to-setup, wall-mountable, physical controller for your Philips Hue lightbulbs. The controller makes it easy to turn the lights on/off, change their brightness, and cycle through preset colors. This is a great project for people who […]

Light sequencing and decoding DMX with Arduino

Akiba of Freaklabs and the Tokyo Hackerspace has written an excellent tutorial on using the Arduino to decode the DMX protocol, a standard protocol for stage lighting displays. It includes a three-part video presentation (Part I, above) and a link to the source code. As Akiba notes, these techniques could be used in developing some […]

App note: DMX512 receiver and transmitter on a PIC

DMX512 is a 3 wire interface protocol used in professional lighting. This app note by Microchip explains all the protocol details and how to implement it on any PIC microcontroller with a hardware UART peripheral. Only external part is a RS485 transceiver. DMX512 transmitter sends 512¬†8bit data packets one after the other to 512 individual […]

DIY Arduino Ambilight using ShiftBrites

Don built an Amblight for his home theater PC. He put together this tutorial describing his build of a multichannel Arduino-based Ambilight. He estimates the BOM at $40 (in addition to the Arduino). The bill of materials include 6+ ShiftBrites (your call, I wouldn’t do less than 6 though), a printed circuit board, wire, and […]