I bought a Mova robot vacuum+mop in October 2026. Specifically the Mova P10 Pro Ultra Gen2, which is both vacuum and mop. You must use their MovaHome app to control the robot (Google, Apple). The app has lots of customization…. Read moreMova app: Carpet Cleaning Settings
Today I learned about an interesting way for an attacker, Bob, to get into the Bank account of their victim, Alice. This attack applies to any sensitive/financial account, not just banking. Note that Bob has not taken control of 212-555-0123,… Read moreAttack to get into victim’s bank account
This in-browser Solar System viewer is pretty nice, https://eyes.nasa.gov/apps/solar-system. Best viewed on larger screens (tablet/laptop/desktop) but also works on smaller phone screens. It lets you zoom around, focus on things, lots of options to control what’s shown. Also some time-travel… Read moreInteractive “Eyes on the Solar System” (NASA)
Veritasium recently released an excellent video about the almost-backdoor into OpenSSH in 2024. The attackers (Russia? China?) would have had a secret backdoor into the majority of servers worldwide. The Internet came within several weeks of this disaster. The video… Read moreThe 2024 almost-backdoor on the Internet
Every few years I look into having an offline copy of wikipedia. Don’t know why, just something that feels like I should have. Here’s what worked well for me in late 2025.
Two creators on YouTube (YT) that I follow (and support) are Kurzgesagt (In a Nutshell) and CGPGrey. I stumbled across this fan made parody, “Every Kurzgesagt Video Ever“. In the description on the parody video, the author jokingly wrote, “I’m… Read moreYouTube parodies: Fun with generative AI
Here are two “tricky questions” that are really interesting to help understand physics. Attach a tennis ball to string, and swing it over your head. The ball follows a circular path. Release the string. What path does the ball follow?… Read more“Tricky questions” that help to understand physics
Friends & family sometimes ask me for advice about passwords. I’ve captured this advice for the benefit of others, and to make it easier for me answer questions in the future. See netjeff.com/password-advice
This is a summary diagram I created to help people new to RV’s better understand the electrical systems in an RV. The direction of the arrows shows the flow of power. This diagram might not exactly match your specific RV,… Read moreRV electrical
Last week I converted our Weber Q1200 gas grill to use both the low pressure connector on our RV, and standard (high pressure) 1, 5, 10, & 20 lb tanks. I followed the instructions in this YouTube.com video. Here are… Read moreConverting my Weber Q1200 to use both low-pressure RV connector and standard tanks