BenQ EX3501R frame skipping with AMD and Nvidia GPUs (WHL #33F6)

Another quick follow-up on the BenQ EX3501R (yawn).
“sss” noted that there’s an issue with their Nvidia GPU and regular 100 Hz operation, FreeSync most likely isn’t the issue here (greedy bastards). (S)He’s having missing frames leading to e.g. jerky mouse movements, which can also be detected by running the UFO test and taking a picture.

Well, so I did.
Radeon 380, 100 Hz, FreeSync enabled but not active in plain Windows mode. Test needed Chrome browser for a) performance (FF you laggy bitch) and b) V-Sync reasons, as FF cannot get its shit together, especially in full screen mode. […]

4th November 2018 4th November 2018 By Bzzz In 12 Comments

ESP8266-DHT22-SR501 kitchen lights thingamabob PCB (#P7F1)

Alright, software aside, back to hardware…

The ESP module shown in #P7 slowly gathers dust in my kitchen, which is tolerable for a few weeks, but that’s not the solution I want long-term. Also, it’s on a separate power brick, meaning there are two microcontrollers running in my kitchen for doing fancy light switches and some air quality logging for twice the standby current. Nope, has to go, needs to be consolidated into one unit.

So a while back I designed this PCB and ordered it (once again) at OSH Park, together with some teeny-tiny DIP adapters that cost next to nothing. […]

21st October 2018 21st October 2018 By Bzzz In No Comment

Theme Font & Size Changer for Thunderbird 64.6 fixes (#E6F4)

Yeah, f*ck me, why am I doing this.

Okay, so after a few requests and complaints about issues with TB 60.2.1 and 63b1, I spent the last hours digging deeper. That’s a mess, and not only on the code side of this addon, but also in terms of Mozilla. Well, who would have thought.

64.6 was just uploaded to the TB repository, could take a week to get that approved. Took care of zoom field and fonts list, also updated some more stuff that got disabled already or will get disabled in the near future.

Zoom. Not as in the Mazda cars, but as in layout.css.devPixelsPerPx. That actually was set to an oncommand on the text box itself, which, after I finally got it to break in 60.2.1, never again worked in previous versions. […]

14th October 2018 14th October 2018 By Bzzz In 2 Comments

Static over DisplayPort (WHL #33F5)

Okay, I admit – this is a lazy one. But I’m busy playing Path of Exile :mrgreen:

Before removing the faulty Ednet DisplayPort cable from my desk, I gave it another shot and tried capturing the artefacts on camera. A tad difficult as I noticed that the most prominent stuff is only visible on a pure black (#000) background and is very much gone on colorful backgrounds or even patterned images. Which makes it quite hard to capture without the noise from the now pretty underexposed camera sensor. And the autofocus has nothing to focus on, because if there is, the fault goes away. […]

30th September 2018 30th September 2018 By Bzzz In No Comment

BenQ EX3501R, AOC U3477PQU and a faulty DisplayPort cable (WHL #33F4)

Well, who would have thought that the BenQ needed another blog post…

Last week, the line flicker described in got significantly worse. I switched graphics cards the week before (Radeon 260X out, 380 in), which resulted in a driver reset and one Windows boot for the short sighted, but it also caused a bit of movement on the cables, as my computer is rack-mounted. Flicker stuff was the same for a few days.

Then it got so bad that it not only had those intermittent lines, but there were entire blocks of lines just black, audio stuttered, and the entire screen went dark for a second every so often. […]

23rd September 2018 23rd September 2018 By Bzzz In 9 Comments

Bloody chip markings (#R6)

Geez. Just wasted half an hour finding a part number with the actual part in my hands. Maybe I’m getting old. Maybe I should have slept more or less (noon isn’t too bad on a Sunday, is it?). Maybe chip markings are getting dumber with every nonsense package invented. Maybe I should purchase components on my own so that there’s some mail history about it. Who knows.

Care to find that on your own? Now’s the time.

Hints: That’s not TO-220, obviously. It’s also not D2PAK/TO-262 (available in DPAK, though)

It’s a N-channel MOSFET with LV-TTL compatible gate threshold voltage. […]

9th September 2018 26th August 2018 By Bzzz In No Comment

FlowerPower LED GrowLight POWERLIGHT 400W Repair (#P8)

Yeah, sorry for not delaying this until I could declare project #P420, but sometimes I’m a little impatient to get content online. After all, I’m not as enthusiastic about this silly number as some folks apparently are. Which also means I’m getting paid in hard cash and not in kind…

So for today’s repair project I have a quad-100W growlight unit on my desk that was in mortal agony when it arrived. The thing does not have a power-on indicator (usually you do know when it’s on…), all it did was some dim, erratic flickering of the LEDs. […]

2nd September 2018 26th August 2018 By Bzzz In No Comment

Mozilla Firefox/Thunderbird “legacy” addons (#E6F3)

News from the friendly crackpots over at Mozilla:

Hello,

 

You are receiving this email because you are listed as a developer of a legacy add-on on addons.mozilla.org (AMO). Mozilla will stop supporting Firefox Extended Support Release (ESR) 52, the final release that is compatible with legacy add-ons, on September 5, 2018.
 
As no supported versions of Firefox will be compatible with legacy add-ons after this date, we will start the process of disabling legacy add-on versions on AMO. On September 6, 2018, submissions for new legacy add-on versions will be disabled.

[…]
26th August 2018 26th August 2018 By Bzzz In 6 Comments

The SilverStone parts service is great – and terrible (#R5)

After the recent ingress of computer parts I had to sort, check and get rid of stuff before my apartment overflows. I donated quite a bit at the usual hardware forums, I sold a bit, and I trashed a bunch of older parts. One of the donated things was a SilverStone CFP52B 4-in-3 hotswap case (4x 3.5″ hard disks in a 3x 5.25″ form factor if your case can take such an unit)

Well, that was in use for quite some time. Wonky construction (we call it “lidschäftig”, which apparently is local slang straight from medieval vocabulary) with flexible plastic parts encapsulating the HDD, four rubber mounts each that get ripped apart upon insertion, and a total botch of the front “hotswap” fan assembly. […]

19th August 2018 5th August 2018 By Bzzz In No Comment

Mellanox ConnectX-3 3D printed brackets (WHL #42F1)

Looks like I got a project out of the 10GbE card thing…

I have to admit that I was wrong in that post – the 3D model of the bracket over at servethehome doesn’t entirely fit the ConnectX-3 MCX311A. It’s for the higher-end dual cards (that I knew) with QSFPs (that I didn’t check). These are larger in physical footprint, so the bracket does fit by chance, but there’s empty space towards the PCIe connector. Also, because of the dual port architecture, these have their second mounting point shifted up higher, which means the second mount doesn’t even meet the PCB. […]

12th August 2018 19th August 2018 By Bzzz In No Comment