Paul Stoffregen

Do both have same color gradient?

Kinda wonder how differing 2D variation of the gradients would look.

As a general rule of thumb, area where same-direction loops don't overlap will radiate RF energy. So if you get into optimizing the current loops, don't focus on minimizing total size. As long as they're in the same direction, focus your effort on keep non-overlap as small as you can.

Usually 3 goals. In order of importance:

1: Both loops go in same direction. Good counterclockwise, good.

2: Loops similar size. If you can route U2 pin 5 underneath, consider swapping placement of C3 and U2.

3: Feedback resistors outside of the loops. Maybe move them below C11.

Sure, here my best guess as the 2 paths current ought to flow. Assuming there is a ground plane or trace not shown for current flow between C3 and C11.

A metal tube with a bunch of electronics cramed inside

From the NTSB investigation into the Titan submersible, thats the internals of some super expensive commercial deep sea camera they used and it contains some redacted @adafruit.com Qwiic/Stemma board and a Teensy 3.2
Very funny that they requested to redact the markings.

Put my old 2015 MacBook Air (13-inch screen) on a scale.

It weighs 1.32kg.

minichord by Benjamin Poilve is a pocket size instrument used to build chord progressions, internally using Teensy 4.0.

www.pjrc.com/minichord-el...

forum.pjrc.com/index.php?th...

Maybe KVMs are such a small niche market that nobody designing silicon really puts any love into them?

Also maybe we got lucky from the larger market of security camera monitoring, a 4K60 multiview chip made its way to a KVM?

I'm just happy to finally get a good KVM.

No idea about how it does with special mice & keyboards.

I can tell you my trashcan Mac's HDMI turned out to be only HDMI 1.4 with 1080p max. It automatically upscales that to 4K60, but the result isn't beautiful. I have a Thunderbolt2/DP to HMDI 4K60 converter coming tomorrow.

I tried another quick test with a USB flash drive plugged into the USB-A port on the front of the KVM.

Indeed the kernel messages show the USB flash and USB hub disconnect and reconnect, but no disconnect/reconnect on any HID keyboard & mouse stuff.

My initial impression is it really does seem to be acting as a you've described a true KVM regarding the Keyboard, Video and Mouse.

It also has 3 USB 3.0 ports to plug in other USB stuff. Those appear to get actually disconnected. I have nothing plugged into those ports.

I tried a quick test just now, running "sudo dmesg --follow" on my Linux machine while I switch away a Mac, and then back again to Linux.

Keyboard and Mouse don't disconnect, but a USB hub does.

KVM model UKM-401MV with a mess of wires dangling off the back

Just want to share my excitement at finally finding a KVM switch that doesn't suck. No more attention-breaking 5-10 seconds of black screen when switching between my Mac and Linux machine.

This isn't sponsored or an ad, only me enjoying what has seemed impossible for so long.

When we added fault detection and CrashReport printing on Teensy 4 a few years back, I created this library of known ways to crash.

github.com/PaulStoffreg...

Most are caught by the fault handler, but not all.

Not really a "game", and I don't fully understand your question, but maybe this helps?

Nick Rehm's dRehmFlight VTOL project using Teensy and MPU6050 motion sensor is intended for teaching flight control and stabilization concepts.
www.pjrc.com/drehmflight-...

Yang Zhang, Wolf Kienzle, Yanjun Ma, Shiu S. Ng, Hrvoje Benko, Chris Harrison used Teensy to help develop ActiTouch, robust touch detection for on-skin AR/VR.
www.pjrc.com/actitouch-vr...

Adrian created this 2-key keyboard for a rhythm game. Two mechanical keys fit nicely above Teensy.
www.pjrc.com/two-key-keyb...

Aaron Todd of One Hacker Band uses Teensy to make musical instruments play themselves!

www.pjrc.com/one-hacker-b...

www.youtube.com/watch?v=PQKq...

YouTuber James Bruton created a prosthetic arm which uses machine learning mimic his real arm based on the position and posture of other parts of his body.

www.pjrc.com/machine-lear...

www.youtube.com/watch?v=Ip83...

Ben Glover’s MIDIHEX, an isomorphic MIDI controller, is powered by Teensy 4.1. It supports not only velocity sensing, but MIDI Polyphonic Expression and microtonal scales.
www.pjrc.com/midihex-harm...

People Are Being Involuntarily Committed, Jailed After Spiraling Into "ChatGPT Psychosis" People experiencing "ChatGPT psychosis" are being involuntarily committed to mental hospitals and jailed following AI mental health crises.

Wow, "ChatGPT Psychosis" wasn't on my 2025 bingo card! Really hope it's extremely rare, but sharing because anyone may have friends or relatives falling for AI-backed delusion and really in need of help.

futurism.com/commitment-j...

Robert Xiao, Gierad Laput, Yang Zhang and Chris Harrison have used a Teensy to prototype on-touch contextual functionality for smart IoT appliances

www.pjrc.com/electromagne...

Will look for you today.

I'll be wearing a black T-shirt with Teensy logo. My hair is short now, so I probably blend in with Tech Bro crowds.

Teardown 2025 logo - "Hack, discover, and share hardware - June 20-22, 2025 - Portland, OR, USA

Getting excited for Teardown 2025 this weekend.

Maybe channel your inner Jessica Rabbit energy?

If you end up making circuit boards with fine pitch parts, organic acid solder used with plenty of extra liquid flux makes an incredible difference. But you must water wash, which means low temperature bake or other methods to fully dry. I personally use Kester 331 and 2331-ZX.

1 pound spool of Kester brand solder, Sn63Pb37 3.3% 44, part number 24-6337-0010

Flux has 2 types, rosin where you can leave the residue, and organic acid (often called "water soluble") where you must wash away with water. Rosin comes in normal and harder to use "no clean" which leaves less residue. Solder with lead is easier than lead free. Kester 44 is one of the best.

While soldering, the flux chemical is really your key ingredient that makes a huge difference. Ordinary solder comes with this chemical inside, but you can also get it in liquid form. For challenging situations, adding extra liquid flux really helps.

Update applied. Please give it another try. That error should be fixed now.

Now that SparkFun is manufacturing Teensy (a good thing which will let me focus more on software), we're having a Leftover Teensy Stuff sale.

www.pjrc.com/store/leftov...

Half price Teensy with minor flaw + grab bag of random leftover stuff...

USA only shipping