USB Power Delivery (USB-PD) is supposed to be the universal charging standard that ends cable chaos. In practice, plugging in the wrong cable or charger gives you a device that charges at 5W instead of 100W - or refuses to charge at all. The root cause is almost always one of three things: a cable rated below what the device needs, a charger that advertises high wattage but only supports a narrow set of voltage profiles, or confusion between USB-PD and the half-dozen proprietary fast-charging protocols that coexist with it.

Klipper is a 3D printer firmware that offloads motion planning calculations from the printer’s microcontroller to a Raspberry Pi or similar single-board computer. The result is faster print speeds (300-500mm/s on a tuned Voron), pressure advance for cleaner corners, input shaping to kill ringing artifacts, and real-time configuration changes with no re-flashing. As of 2026, Klipper paired with a Mainsail or Fluidd web UI running on a Raspberry Pi 5 or Orange Pi 5 Plus is the default stack for anyone serious about 3D printing.

If you’ve been following the mechanical keyboard scene over the past couple of years, you’ve probably noticed Hall Effect keyboards moving from niche curiosity to genuine mainstream contender. The technology that was once confined to expensive custom builds and obscure group buys is now showing up in mid-range boards from Keychron, Razer, and SteelSeries. And at the top of the pile, two keyboards have emerged as the flagships of the Hall Effect world: the Wooting 80HE and the Geon Raw HE .

Fixing a broken mechanical keyboard PCB usually involves re-soldering a loose hotswap socket or bridging a damaged trace with a small piece of wire. With a basic soldering iron, some flux, and a multimeter, you can repair the most common keyboard hardware failures yourself rather than replacing the entire keyboard. Most repairs take 15–30 minutes once you’ve identified the fault.

ESD Safety First

Before touching any PCB, establish your ESD (electrostatic discharge) precautions. A static discharge too small to feel can permanently destroy the microcontroller or individual key matrix diodes on a keyboard PCB. Two steps cover the vast majority of builds:

You can build a self-contained pen testing lab on a Raspberry Pi 5 running Kali Linux ARM64. Add a battery HAT, a 7-inch display, and a wireless adapter that does packet injection. Total cost lands between $200 and $250. The result is a pocket-sized hacking kit that runs Nmap, Burp Suite, Wireshark, Aircrack-ng, and Metasploit in the field, at CTF events, or on jobs where you can’t lug a laptop.

The best silent switches in 2026 use dual silicone pads and quality TPE to kill both the “clack” of bottom-out and the “ping” of spring return. They do it without flattening the tactile bump. For quiet office typing, pick a Silent Linear with factory lube and a dampened bottom-out. The result: a deep, muted sound.

What Makes a Switch “Silent”? The Mechanics Explained

First, it helps to know what makes the noise. A mechanical keyboard has two distinct noise sources, and the best silent switches kill both.