Electronics, Physics and Rock 'n' Roll
Introduction Being a freelancer, one can never stop improving himself, get a new trade or sometimes even to revise the things he has already mastered. With this in mind, I came across Advanced PCB Layout Course by Fedevel Academy, a hardware design/consultancy company by great engineer Robert Feranec. This post is about my impressions, experiences … Continue reading Advanced PCB Layout Course by Fedevel Academy
Last week I got a Christmas present! Actually, it’s not a present, it’s a tool for work. But it is a brand new spectrum analyzer! Actually, it’s not brand new, it’s at least 15 years old. The basement guy found it in the company’s basement and brought it to my office to see if I … Continue reading Playing with a signal demodulator
Introduction Having my reflow solder oven finished, I couldn’t wait to see how far can I challenge it with complex circuit boards and tiny components. I decided to build a system with components that are tricky to solder, such as BGA and QFN packages. Not interested in designing the whole circuit on my own, I … Continue reading Building an ARM based microcomputer at home
Introduction I’ve been trying to sort out all those computer memories in some meaningful order in my head for some time and it turned out to be not an easy job. Partly because of my head and partly because of all the various memory types out there: volatile, non-volatile, read-only, RAM, DRAM, SDRAM, permanent, Flash…does … Continue reading Remember the memories
Introduction Working in a microwave engineering area I learned that classic components like capacitors or inductors are ditched away from the filter design and so called distributed elements are used. It means, basically, that inductances, capacitors, LC circuits are created using conductive lines on PCB instead of soldering old school components. Pretty cool, I thought, let’s … Continue reading 1 GHz Bandpass Filter with Distributed Elements
Introduction Some time ago I started a project of reusing an old, crappy toaster oven as a reflow solder oven. I did some necessary improvements on the oven, like adding a glass wool isolation. I also examined dynamic characteristics of the oven by looking at its transient response to a step input power. Everything was … Continue reading PID Controller for a DIY Reflow Solder Oven
Introduction I’ve had a desire to learn to work with Raspberry Pi since, like, forever. What better way to learn it than by trying out some DIY project? One of the most popular ones I’ve found around is brilliant Magic Mirror by Michael Teeuw: it’s a mirror that displays some useful info (in.e. time, forecast, … Continue reading Magic Mirror with a motion detector
