28 April 2020

Longer delay modification for TDL-2023 PIR sensor

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I have a TDL-2023 pass-through motion activated sensor that turns on a device. While I have already set the delay to the maximum value with...
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25 April 2020

An update to my KiCAD library for obsolete LED

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I got a new batch of old LED displays and before doing something with them I needed a KiCAD symbol and footprint. So I added TIL308 and T...
24 April 2020

Blue dot and leg glow in Z520M Nixie

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I love Nixie tubes, and I especially love round top-view ones. Perhaps that is because the first ones I bought were of this kind. Lately ...
16 April 2020

TTL integrated circuits "collection"

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Not a real lockdown project, I tried to organize my "collection" of TTL integrated circuits. These have been piled up in numerical...
15 April 2020

Another HV DC power supply

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DISCLAIMER. This "project" handles lethal voltages and currents. Do NOT replicate. I take no responsibility for any damage that mi...
13 April 2020

Cleverly hidden reset button

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Like many people involved in COVID-19 lockdown, I am using the opportunity to tidy up home and reorganize things. Something that popped up w...
01 April 2020

High voltage DC power supply

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Most hobbyist electronic labs are equipped with a variable voltage power supply of some kind. It could be a benchtop commercial box, a modif...
27 March 2020

Texas Instruments TI-1500

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What I found!! Texas Instruments TI-1500, that's the third calculator I bought at "Barattolo" flea market in Torino. This...