Category Archives: Anything

In one company I was forced to install several copies of Norton Antivirus 2008. This was retail version of software in nice boxes, and I needed to enter all registration-configuration data in every computer. At a first glance, everything is … Continue reading →

I am using small Hobby drill (cheap dremmel tool) t make holes in PCB. Recently I broke several high speed steel drills. I decided to explore, why the drills are broken. After some investigation, I discovered that drill is moving … Continue reading →

Just small note about the beauty of laser beam image. Laser beam is coherent light- the waves of the light are synchronized. So all theoretical effects of light can be viewed with naked eye. Here is the image of interference- … Continue reading →

This web log entry was written in Lithuanian language before new year. It was just a joke… My nephew decided to build holographic super computer as his science project. (It a partly true). Here is small glance to the upcoming … Continue reading →

I have already wrote about terminal computer I have. I didn’t managed to start Windows CE on it. Maybe there were some problems in configuration or something. After some time I received more terminal computer and they booted Win CE … Continue reading →

From time to time I am doing house clear-up. If I didn’t this, the house will be full of various electronic stuff. Some of the items maybe sold in eBay or local garage-sale, but some items must be thrown away. … Continue reading →

As I mentioned, laser diodes are fragile devices. So the power supply must be adjusted before connecting any laser diode. After all components are placed on PCB and visual inspection is finished, connect one 1.2K resistor in R4, R5 and … Continue reading →

I’ve made some improvements to my laser PSU. I added voltage regulator, max voltage on open laser suppressor, spike suppressor. Also some useless improvements… I didn’t made new PCB, I tested modifications on old board. But all modifications I entered … Continue reading →

I improved my laser PSU design: added voltage regulator, additional schottky diodes, some capacitors and it seams that laser supply is quite stable. I tested it with low power led lasers and several high power IR lasers from CDRW devices. … Continue reading →

My red laser stock was empty. Mainly due to my errors and experiments. As I didn’t find spare DVD recorders, I switched to infrared lasers (IR). It is much easier to find powerful IR laser- the source is any CDROM … Continue reading →