No web page, but a little description here. It has changed quite a bit from the original description. Now uses TAOS color sensors. Suppors Melexis IR thermometer chips. Has 16 bit A/Ds. Processor is an ATMEGA 1284. The control program is based on Lady Heather. Besides LEDs it can also charge/discharge/analyze batteries, measure power converter/supply efficiency, etc http://budgetlightforum.com/node/12296 CIrcuit board: http://img69.imageshack.us/img69/3782/luxor.png Sphere in action: http://img515.imageshack.us/img515/4288/spherew.jpg BTW, the PWM sensor is a silicon phototransistor with not much blue light sensitivity... --------------------- > Do you have a web page on the LED analyzer/integrating sphere?

Hi Mark, What would your PWM sensor circuit do if all of the AC was in the blue, and the white light appeared as a DC bias on the phototransistor? Mark Sims wrote: > BTW, the PWM sensor is a silicon phototransistor with not much blue light sensitivity...