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The Engineer Comedian – Don McMillan Comedy (due to request) https://www.youtube.com/watch?v=sNNFVA-QRSY →

IT’S A HUMBLE ‘SCOPE, BUT IT CHANGED OUR WORLD https://hackaday.com/2023/07/06/its-a-humble-scope-but-it-changed-our-world/ Now anyone seeking a connection with both Pong and the Apple II can have one of their very own if they have enough money because [Al Alcorn]’s Tektronix 465 oscilloscope is for sale. He’s the designer of the original Pong and used the instrument in →

A high voltage probe allows an ordinary voltmeter to measure voltages that would otherwise be too high to measure or even destructive. Typically normal multimeters are typically designed to measure voltage up to hundreds of volts or one kilovolt. If you need to measure higher voltage, you need to use a high voltage probe. A →

I got a mains power (230V AC) surge protector for teardown and analysis. This one is designed to be installed to DIN rail on the small electrical distribution panel or inside electrical equipment. This one was in original package but already the indicator showed that it was broken. This protector protects against voltages above 320V →

This posting is here to collect cyber security news in July 2023. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →

What is low Z on multimeter? Dual impedance digital multimeters have feature to control the input impedance of the multimeter. LoZ stands for Low Impedance (Z). This feature presents a low impedance input to the circuit under test. A typical digital multimeter has typically around 10 megaohms input impedance, which loads the circuit being measured →

Can terrestrial networks can meet the communications needs of future space missions? Maybe. Nokia is planning to launch 4G internet on the moon later this year, an executive for the company said. It will be used within Nasa’s Artemis 1 mission, which aims to establish a human presence on the moon again (last time was →

Passive Etherner hub is special device I have seen in use in 1990′s. Nowadays there is no real use for Passive Ethernet hub, because it will not work with modern Ethernet standards (it only worked with 10BASE-T). Actually using Ethernet hub is nowadays past days as they have been for a long time replaced with →

FreeBSD Celebrating Its 30th Anniversary https://www.phoronix.com/news/FreeBSD-30th-Birthday It was on 19 June 1993 that the FreeBSD name was chosen for the project born out of 386BSD. The first official release of FreeBSD though wasn’t until November 1993. https://www.freebsd.org/ FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. It is derived from →

The Sender Policy Framework (SPF) is an email authentication protocol that is designed to help prevent email spam and phishing attacks. It works by allowing email administrators to specify which IP addresses are authorized to send emails on behalf of a particular domain. When a receiving mail server receives an email, it can check the →