Paul Stoffregen
paulstoffregen.bsky.social
Paul Stoffregen
@paulstoffregen.bsky.social
Electronics, Teensy, Arduino, Making, DIY Tech
he/him
Put my old 2015 MacBook Air (13-inch screen) on a scale.

It weighs 1.32kg.
September 23, 2025 at 7:32 AM
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.
August 19, 2025 at 3:10 AM
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.
August 19, 2025 at 12:01 AM
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.
August 18, 2025 at 10:38 PM
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.
August 18, 2025 at 10:34 PM
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.
August 18, 2025 at 10:32 PM
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?
August 13, 2025 at 10:42 PM
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.
June 21, 2025 at 2:26 PM
Maybe channel your inner Jessica Rabbit energy?
May 26, 2025 at 8:48 AM
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.
May 25, 2025 at 9:18 PM
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.
May 25, 2025 at 9:18 PM
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.
May 25, 2025 at 9:18 PM
Update applied. Please give it another try. That error should be fixed now.
April 14, 2025 at 3:27 PM