



It was my first work on photo-voltaic and rechargeable batteries technology. I have read a lot about mono- and poly-crystalline cells, tracking the highest efficiency points of panels (MPPT) or proper charging/discharging. Facing that I felt I have long way to go. Until I read article on Linear’s LT3652 all-in-one chip. LT3652 tiny case with underneath pad Even though it was quite expensive to figure out it if fits my needs at all, I have… Continue reading
IBM BPM Process Designer started migration from desktop to pure web client long time ago. While lightweight tools are enablers for everything in cloud game, it is shame how productivity is ignored. For several releases IBM has not corrected even such fundamental feature like fixed-width font to give visual aid on indentation. Fortunately this was easy to fix once and for good. Default WebPD formatting (left) can be… Continue reading
Short deployment to Moscow stopped me from re-exploring the city. Last time it was the haze of burning woods, this time rainy and cold weather of Moscow’s early Autumn. I am not sure what was worse, the atmosphere or my inclination to bitching, using both the picture drawn is simple: I do not like this place. My grumblings start again with the oligarch-style hotel Metropol. This luxury is superficial as it manifests mostly by overpriced… Continue reading
Before the age of youtube I was a fun of munobal videos (now you can find them on youtube anyway). It was very useful since it gives you different camera angles you you can learn trics stright from videos, as I do. It is good however to learn tricks on similar level of difficulty – it allows you to build necessary skills for next levels, and gives satisfaction of successful exercises, so crucial factor to keep learning going. After some… Continue reading
Kicad PCB toolset changed a lot over last two years. Great contribution from CERN is merged with stable release on one hand, new library format and projects migration necessity on the other. Meantime Freerouter cooperative tool disappeared and my reluctance to move was justified. Until recently when I gave migration a try. Time saving push-and-shove capabilities that I tried long time ago are now part of regular bundle. Whole bunch of new… Continue reading
In the late stage of hardware planning of new server I assumed software RAID1 support. Since this was my first time to play with disk array I reduced number of variables to minimum and have chosen Ubuntu Linux as server OS, distribution I know best. Overcoming installer defects I laid down the foundations, configured remote graphical access, migrated services, measured and estimated TCO of platform. Preparing for installation I discovered… Continue reading
Some organizations still cannot shrug Internet Explorer (IE) off their IT standards. Combine it with user interface of IBM BPM based on Javascript and your development falls back to coding practices in early 2000’s. Surely there are ways to fill the gaps with polyfills and shims, the question is how do do it neatly in BPM. Let’s see! I had this issue couple years ago. That time our department had been already involved in long… Continue reading
The logger part of Water Level Station experiment was second in line for design and development. The transmitter measuring water level was done first and turned to be just a warm-up comparing to logger feature list: self-powered unit with multitasking firmware, local file system and couple different local and remote buses and protocols. All that within the rigor of power and cost efficiency. Let’s take a look at the latter first. Drawing… Continue reading
These days turning imagination into reality at home is more real than ever. RepRap movement made fused deposition modeling technology affordable. Turning a figurine or mathematical object into physical object is exciting and funny and using 3D printer to fabricate mechanical constructions or replacement parts makes it another tool on a workbench. Yet 3D printing is far away from “Ctrl+P… ready” approach. Let me share the… Continue reading
Imagine you want to see all IBM BPM coach validation errors in one place. By default after validation phase you need to find all invalidated widgets one by one, changing tab or opening accordions, and so on. Coach framework does not give any programmatic tool to get all validation messages from inside of coach view. While SPARK / BPMUI library gives some helper functions it does not cover all cases. Here I discuss simple way to plug-in to (or… Continue reading