22 January 2015

BITX, I'm in

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Ten years six months after joining the BITX transceiver project mailing list I decided to actually build one. A decade ago I had even matche...
13 January 2015

A variable PSU with LM2596 adjustable DC-DC step-down regulator?

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N ow that I have a lab PSU with an adjustable regulator inside, how about bringing the voltage control to the front panel? The voltage reg...
12 January 2015

(27 y.o.) PSU update

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T he aforementioned LED strip in the shack needed a 12V power supply. Since I had wanted to turn one of my fixed PSU into variable (or multi...
11 January 2015

LED strip, a little discovery

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Last Friday I received my first roll of LED strip. 5 metres of warm white 5050 LEDs, out of which I need only 1.10 m. When preparing my stri...
04 January 2015

Nativity scene light effects with Arduino - the video

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It is hard to film something almost totally dark, so this recording was done with the room light on. The short film has been cut to remo...
23 December 2014

Nativity scene light effects with Arduino - the code

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And here is the code of my simple light effects. As shown in the previous post I used an Arduino-compatible board called "Pro Micro...

Nativity scene light effects with Arduino

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It's Xmas time again. At home we deployed our usual nativity scene that had been joined by a simple 3V lamp for the barn, a couple of y...
21 December 2014

ESP8266 really works on 802.11n?

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Now that I got acquainted with ESP8266 WiFi module peculiarities, I have been asked if it works on newest 802.11 n wireless networks. Accor...