I’ve just discovered an undocumented command of the Velleman PS3005D programmable lab power supply. This PSU is available as a number of clones like Korad KA3005P reviewed at EEVBlog. I don’t know much about the serial communication protocol in the other PSU variants, perhaps they are different.
Quick info on how to start disassembling a DELL 2209WAf monitor. No pictures this time, but perhaps it will help. Remove the stand and the 4 screws behind the stand. These are the only screws in the case Pry the front bezel off. Do the corner with the buttons last. You may leave the front… Read More »
This is a simple universal RS232 DB9 gender converter. It covers all plug combinations, both straight through and crossover. I have only connected RX, TX and ground so far since those are enough for me most of the time. Quite a handy tool for less than 1 euro and one hour work.
The Samsung SyncMaster 225BW LCD monitor does not support pivoting. However, modifying the monitor so that it is fixed in portrait mode proved to be very easy. After it is done, the height adjustment of the stand is affected – in its highest position the bottom of the screen bezel is about 87mm from the… Read More »
I came across a small lens while salvaging magnets and components from a broken DVD writer. Adding the lens to a phone or web camera, it turns it to a microscope. The magnification is not very high, but quite handy. So I made an ‘adapter’ for my Canyon web camera. The front cover had already… Read More »