Mini PC Bottom Vents and Summer Heat: What Actually Throttles Your Machine
A mini PC pulls air through vents on its bottom panel, passes it over a heatsink, and exhausts…
Electronics
Five Miles of Range, Fifty Feet of Trees
UHF radio waves at 462 MHz travel in straight lines, but they need more than a clear sightline…
Membrane Keyboard Switches Wear Out Differently Than You Think
A rubber dome keyboard switch can register a keystroke long after it stops feeling like one. The dome…
PIR Motion Sensors Detect Temperature Changes, Not Movement
A passive infrared motion sensor doesn’t see you move. It sees the temperature where you were and the…
RPM Doesn’t Clean Your Keyboard. Air Velocity Does.
A 150,000 RPM motor sounds like it should strip paint. Point it at a keyboard through a wide…
One Cable, One Bandwidth Budget
Every PoE NVR camera system on Amazon advertises 4K. The NVR box says 4K. The camera bullet points…
85 dB Limiters Cut Bass First — Here’s the Physics
An 85 dB volume limiter caps the electrical signal before it reaches the driver. But bass frequencies below…
Hot-Swap Keyboard Sockets Wear Out Faster Than You Think
Affiliate disclosure: This article contains affiliate links. We may earn a commission if you buy through them, at…
The Clock Speed on the Box Is the One You Won’t Get
A 4.5 GHz boost clock runs for about ten seconds. Then the chip heats up, the chassis can’t…
NVR Channel Count vs. Actual Recording Resolution — What the Box Doesn’t Tell You
An 8-channel NVR has eight ports. Plug in eight 4K cameras, and every one of them records at…