22 February 2015

SOTA: gathered season bonus points this weekend

It's the middle of February, sunny outside and I'm in an outdoors mood - of course some SOTA will happen. As in this time of year the mountains are covered in snow, I decided to go for two low-effort high-reward 6 point summits I've visited before - only this time I will also collect the seasonal bonuses. These are YO/EC-252 Piatra Arsa and YO/EC-241 Fitifoiul and more details about them you can find in the previous activation article.


First in line is YO/EC-252 Piatra Arsa and this time the 10-minute walk from where I could park the car to the lodge at the base of  the mountain turned into a 30-minute one, since because of the snow I couldn't park on the side of the road, let alone enter the road leading to the lodge. So I had to park further away - in a small motel's parking lot, plus once I entered the woods the snow wasn't exactly making things easier.

09 February 2015

Raspberry Pi 2 freezes when photographed

The all new Raspberry Pi 2 is the new maker's sensation, sporting 6 times more performance and 2 times more memory than the previous model, keeping the same affordable US$35 price label. And this is not everything, Microsoft is also offering a free version of ARM-compatible Windows 10 for it (yes, you just read a sentence that includes "Windows" and "free"). These are great times if you like fiddling around with hardware, software and electronics.


There is however some sort of a funny issue with the Raspberry Foundation's new creation: when exposed to strong infrared light (such as that from a Xenon photocamera flash or a small red laser pointer) it just freezes and crashes. The source of this problem has been identified as a small PWM voltage regulator that powers the processor and the memory - NCP6343 made by OnSemi, wich is dubbed U16 on the small Raspberry Pi 2 board - I dare you to find it in under 1 minute in the image above (click to enlarge).