Category: Blog

Electronics from China — Pixie CW

Power supply: DC 9v – 12v Antenna: 50 ohms, is not balanced, 7MHZ band, standing wave ratio below 1.8 Receive the static current: 10 mA @ 9 v Transmission power: 0.8W @ 9 v, 1.2W @ 12 v Frequency range: 7.023 MHz launch, receive 7.023-7.026 MHz (7.023 MHz crystals) Stray (harmonic) inhibition: – 20 db …

Electronics from China

I am pretty pleased by the outcome of my commercial endeavours on eBay. Purchasing seems to be a pleasure; until now — with just one exception — I was spared from any nasty experiences. After several small items that I ordered in part for my curiosity to evaluate speed and quality of shipments from chinese suppliers, I …

A Weekend Project

Not much to say today. For some time I wanted to tear down and clean my old Panasonic radio casette player. I am very fond of this device. A small and relaxing weekend project.

New Mac !

My old Mac died in a very unfortunate way — the GPU succombed. It was the last model with DVD drive provided and I really miss having the possiblity to play CDs. Anyway… I did some due dilligence about the costs of repair and the figure was higher that what I would have probably get …

Why I love Analog Devices :)

For starters, I have to be very clear that I have absolutely no affiliation with this company or another of its kind. This is just about a personal opinion and I wanted to write such posts for some time, but did not find enough momentum to do it. While browsing for some information from their …

Christmas 2015

Again, this time of the year. Got this beautiful fountain pen from my wife. 🙂  

Things to do, drafts and timeline

Today, while I went over all my posts, I noticed that I have a large list of 43 draft posts. These are articles that I started writing, thought to be interesting, but I had limited bandwidth to finish. I need some planning with these, thus I put them down, maybe getting some input from you …

More about zombies and XCode

Some time ago I did a very short introduction about enabling zombies when debugging in XCode. As a refresher, zombies is a Cocoa feature that turns any object going to be deallocated into a NSZombie instance. This will not prevent your application from crashing, but instead of getting a stack dump from Xcode that is a …

Some thoughts on the Responder Chain

I had a lot to do these days and did not manage to keep up with the blog. Very busy time at the office before Christmas. Luckily, I’ll get my vacation soon by I swear I will not spend it on much anything else than reading paper books. And books which are not about programming, …

XCode 5 LLDB Debug Assertions

One situation when a debugger might not be the first option is when you are not sure where does a program has a bug. One way you can check whether your assumptions are truly what is happening in your code is by using assertions. What assertions let you do is express one particular assumption and …