The news, opinions and events of VE3OIJ / VE3EEE
VE3OIJ

The ice storm cometh…

Equipment, General

The mid-spring ice storm has taken its toll… my long-standing Butternut HF9V is no more.

 

 

Fortunately, I have some spare antennas (Buddipole, and some wire antenna if need be), but I shall replace this antenna.  I was happy with the HF9V for almost 10 years.

 

[edit]

Looking at it today, it appears the 15m bit is broken, but that’s only a wire, so fixing that is trivial.  The bend on the pole there is actually in the counterpoise kit, which is much cheaper to replace than the entire cost of the antenna, though still $400.  Ugh.

VE3OIJ

How to use a computer – The Squid Zone

Equipment, Operating, Security, Technology

A good reminder for everyone…

This is a primer for anyone searching the web looking for tips on how to use a computer.  The language is direct, and intended to be clear and unequivocal. 1. A computer is a dangerous power tool, treat it accordingly As computers become ever more a part of everything we do, there is a tendency […]

Source: How to use a computer – The Squid Zone

VE3OIJ

Google thinks deleting is suspicious. – The Squid Zone

General, Security, Technology

Sunday night I was up late.  I wasn’t sleeping and decided to log into GMail to do some clean-up.  This is a regular task for me – I go in, empty the bin, delete old mails, sort the inbox into categories, etc.  I’ve been doing this for years, usually from the same computer at home […]

Source: Google thinks deleting is suspicious. – The Squid Zone

VE3OIJ

Force Apache to use strong cryptography – The Squid Zone

General, Security, Technology

How to modify Apache’s ssl.conf to require TLS 1.2 and strong cryptography.

Source: Force Apache to use strong cryptography – The Squid Zone

VE3OIJ

4 bit computer built from discrete transistors

Equipment, General, Technology

I started this project as an attempt to teach myself about how computers worked. As such comments, useful links, or anything else related would be appreciated. Prior to this my experience in electronics was mostly microcontroller based. The computer is perpetually half done (it could be more it could be less, I only design the logic for the chunk I’m working on) but currently consists of about 300 transistors. I’m pretty sure that the computer follows ‘Harvard architecture’ (corrections welcome) as the RAM and ROM are strictly segregated. 4 bit is used loosely data width is 4 bits but instruction width is 8 bits as some instructions include 4 bit values. some stats: RAM: 16 nybbles (dictated by address register width) ROM: 16 bytes (dictated by program counter width) clock speed: more than one (the computer is currently not clocked as much of the sequential logic has yet to be built)

Source: 4 bit computer built from discrete transistors

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