27 March 2023

IC decapping with paint remover heat gun

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I'm not sure where I read about an easy way to decap integrated circuits with heat, but it's certainly not three years ago (when the...
08 December 2022

Behringer BX1200 Ultrabass

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A friend's son plays bass. He was given a Behringer BX1200 Ultrabass combo amplifier with some problems, and he asked me for help. The ...
26 November 2022

The 4-weeks challenge: deliver a Nixie clock from scratch

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L ast weekend of October a curious teenager guest noticed the Nixie clock in our living room. The most eye-catching element was the short de...
16 November 2022

Arduino based AVR ATmega fuse doctor

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Given the ongoing semiconductors shortage and needing urgently a bare ATmega168/P/328/P chip, I had to reset two 168's unresponsive to t...
07 November 2022

OpenSCAD for 3D printing

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If you are a software programmer/developer of some sort in any high-level language and you need to design an object for 3D printing, I think...
18 October 2022

HP 3734A Electronic Counter

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I really enjoyed Mombarone HAM Fest (near Asti, Italy), October 2022. The visitors flow was relaxed and I could spend time looking above and...
26 September 2022

Almost working circuit with 6LO1 CRT

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A square little 6LO1 CRT and associated circuit.   The are a few reasons why I bought this homemade circuit originally meant to display the ...
17 September 2022

A simple way to 77 GHz

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The Italian government has approved a new frequency allocation document, so I checked which changes would impact the amateur radio world. I ...