I have asked a question over on the EEVblog Beginners Forum: Making a safe bench supply from a salvaged transformer. I want to learn if it’s possible to make a low voltage AC bench supply from mains input in a safe way which could tolerate an accidental short circuit.
I have a new post on Hackaday: 2025 One Hertz Challenge: Analog Clock For Microsoft Windows.
A good introduction to the 74HC595 shift register over here: Why the 74HC595 is Your Next Favorite IC?
14 years ago today I started this blog. It started as the ProgClub blog but eventually got moved over to blog.jj5.net.
Over on YouTube: How to Learn ANYTHING Faster Than Everyone
Learning styles mentioned are:
The video says you should be an “omni-learner”, using all styles.
Over on YouTube: 40 Harsh Truths I Wish I Knew In My 20s.
I have a new post on Hackaday: The LumenPnP Pasting Utility: Never Buy Solder Stencils Again?
I have a new post on Hackaday: 2025 One Hertz Challenge: Precise Time Ref Via 1 Pulse-Per-Second GPS Signal.
An introduction to bpftrace over here: bpftrace One-Liner Tutorial.
I have a new post on Hackaday: Eight Artificial Neurons Control Fully Autonomous Toy Truck.