This was originally going to be part of another post, but it ended up getting more complex than I originally intended so it’s been given it’s own. I go into into many of my personal security practices, on both my public facing servers & personal machines. Since the intertubes are
Continue readingSecuring The New Server & Security In General
Time for another teardown! Here’s a pocket-sized headphone amplifier for use with mobile devices. This unit is powered by a built-in lithium cell, and can give some pretty impressive volume levels given it’s small size. The 3.5mm audio input & output jacks are on the front of the unit, along
For a while I’ve wondered how these pancake type (AKA “Shaftless”) vibration motors operate, so I figured I’d mutilate one to find out. These vibrators are found in all kinds of mobile devices as a haptic feedback device, unlike older versions, which were just micro-sized DC motors with an offset
In the past, I’ve used RC type LiPo packs for my mobile power requirements, but these tend to be a bit bulky, since they’re designed for very high discharge current capability – powering large motors in models is a heavy job. I recently came across some Samsung Galaxy Tab 10.1
Thanks to Lewis over at Distant Signal Radio, the bad influence he is on my bank balance ;), I’m the proud new owner of a new Baofeng. This time it’s the UV-82. This radio is a little different from the other Baofengs I have. Here are the main differences: Dual
Recently I’ve noticed my usual mobile rig, the Baofeng UV-5R, has had very poor receive, and non-existent transmit. I did a power test on the radio, and confirmed it was still outputting it’s rated RF power. Trying another antenna proved that the radio was fine. Time to tear down the
As per my site update post, I have migrated my radio log onto a new system, from CQRLOG. CQR log has served me well since I first started in Amateur Radio, however it’s a bit complex to use, requires a backend MySQL server for it’s database, and as it’s a
After a few years of running with the same look, I’ve decided on some changes. New theme! The site now looks much better, and has better support for more eye candy 😉 Addition of my QRZ link New QSO logging system Accessible from a button in the header, this is
The original LM2577 based regulators I designed into my mobile battery pack turned out to be insufficient for requirements, therefore they have been replaced with higher capacity regulators. The 12v regulator (left) is a muRata UQQ-12/8-Q12P-C SEPIC converter, providing a max of 8A at 12.1v DC. The 12v rail is
Another phone from the mid 90s. This is the nokia 7110. Here the slider is open showing the keypad. Here the battery is removed, a Li-Ion unit. The battery cell & protection circuit removed from the casing. This is the rear of the PCB removed from the housing. Data &