Archive for date: May 28, 2011

A simple constant current LED circuit

May 28, 2011 | diy, electronics | By: Mark VandeWettering

I’ve been pretty happy with the performance of my linear current based LED transmitter, but that was just sitting on the bench, driving a 20ma device. As I played with the circuit, I began to realize that if I scaled the circuit up to a 1W LED, its deficiencies in terms of efficiency would become […]

High Power LED Driver Circuits

May 28, 2011 | diy, electronics, My Projects | By: Mark VandeWettering

My recent experiments with light based communication left me thinking about simple circuits for driving LEDs. I’ve got three big LEDs (1W) on order from deal extreme, so I was looking for circuits to drive these larger LEDs. This Instructable has some good ideas. I’ll probably breadboard some of these soon. High Power LED Driver […]

Return Infinity – BareMetal OS

May 28, 2011 | Computer Science, Operating Systems | By: Mark VandeWettering

At various times, I’ve been interested in writing operating systems. I haven’t done much thinking about this recently, but it is a topic of interest. I hadn’t seen this project before: a small 64 bit kernel written in assembly. I have no idea whether it’s interesting, but I thought I’d bookmark it for future investigation. […]