bcache vs. dm-cache I tested bcache about year ago on my spare/backup server and it worked quite fine. But since then every newer kernel had new issues, even on mailing list there were suggestions that bcache should be marked back … Continue reading →
Somewhere at the beginning of November I discovered RGB LEDs with embedded controller: WS2812 and others. Idea was so cool for me that I had to own one to play with it 🙂 These chips became so common, that there … Continue reading →
There is small simple howto with Slackware package mkinitrd, man page says a little bit more, more is kind of mystery 🙂 I switched from full kernel (in fact, my own compiled kernel) to initrd few years ago and since … Continue reading →
Recently I noticed in server’s logs that one of my blog pictures become very popular: It’s from this post: RTL2832U spectrum analyzer – part 2 Sometimes people embed my schematic or pictures on forums to enhance discussion. But this time … Continue reading →
If you need more flight time, more battery capacity helps (to some extent) 🙂 But most batteries are designed for very high current, wires and connectors are also choosen for this purpose. It’s sometimes a problem. I use in my … Continue reading →