Camera …issues (#E8)

Houston, we got a problem…

My Canon S100 died yesterday. Did a photo of the working Revox display (yup, that’s another blog post right there), turned it off, set it aside on the table. Later decided to take a picture of something else – lens error. Common problem with the S100/S110, mine carries a high 41xxx serial number.

Engadget and others reported…

Canon even acknowledged it, but unaffected (not-yet-failed) devices were not recalled or repaired, and mine didn’t fail that way in time. Well, until yesterday. […]


24V to 5V 10A 50W DC DC Converter Regulator Car Step Down Reducer 24V to 5V 10AMP Daygreen CE Certificated (WHL #46)

Alright, part two of the DC-DC converter tests that’ll lead to a small project. This time we got a 5V/10A converter from Daygreen, model number B10-1224-05, shipped together with the 12V/10A unit from WHL #44. This item was 2.41€ excluding shipping, as described in that blog post.

It’s a brick style unit as well, a tad smaller, but also has two mounting holes left and right which are flush with the case. Contrary to the more powerful 12V one, this is only a plastic case that was potted, but it has four screw terminals and therefore offers more flexibility when it comes to attaching your own wiring. […]


Revox Evolution 19″ panel mount (#P10)

Christmas, the fabulous time of the year where you got plenty of free time, but you aren’t supposed to make hell of a noise :suspect:

Happy 2019, y’all!

Having ordered a second 19″ keystone plate recently, I decided to finally make the user panel of my Revox Evolution stereo system into a front-mount panel that fits the outside of the rack. Without, it got even more hidden inside because of the top-mounting system that is used. Here’s an original marketing wankery image from Revox:

So if that unit is sitting inside of a 19″ rack, imagine the user experience (wank, wank) of operating the display if the top part is blocked by other stuff. […]


Samsung USB 3.1 Flash Drive BAR Plus MUF-256BE3/EU (WHL #45)

Wan Hung Lo #45 – Christmas Turd Edition!

Yeah…wasn’t planned to do that, but just like with the much more expensive “proper hardware” item from last year, the BenQ EX3501R that caused m u l t i p le revisits, I guess I found something worthy of in-depth reviewing. A simple USB flash drive.

Let me explain. I’m in the market for some 200GB+ device, as I’ve come to the point in the upgrade cycle where my 128GB Sandisk Extreme Pro (wank, wank) is no longer capable of holding all data that I want to carry around. […]


24V to 12V 5A 10A 120W DC DC Converter Step Down Daygreen 1A 2A 3A 6A 8A Voltage Regulator Newest Type CE, 10,000pcs in Stock (WHL #44)

[Just updated to WordPress 5.0 – slight errors in the Matrix might occur]

Overengineered parts from China aren’t really my cup of tea, but this is for an upcoming project with power-hungry, rotating AND rusty plates, so I figured I would use something up for the task…

…and I don’t think I paid that much of a premium for it. So today’s item is a step-down converter model “D121” rated 10 amps at 12V, with 15-32V input voltage. Price was 2.86€ at the time; contrary to the usual item on this site, this was without shipping cost. […]


PWM Pulse Frequency Duty Cycle Adjustable Square Wave Signal Generator Module (WHL #43)

Haven’t reviewed a lot of China gadgets lately, have I? Well, what about a tiny PWM generator…

I remember having the need for some good old TTL PWM signal and being too lazy to program an Arduino for it. I mean it is dead simple and there are examples included, but hooking up some knobs for live modification of the duty cycle and possibly the frequency as well, nah. There has to be a Wan Hung Lo solution to this, and indeed, there is.

This unit was actually purchased via eBay, as Ali wanted significantly more money for it. I’ve checked and now the eBay is the more expensive dealer, as it basically always is these days. […]


Fujitsu P20-2 CCFL to LED conversion (#P9)

Okay, so here’s something that I wanted to do for a long time, but it makes no sense in terms of time and money. But hey, I finally did it and it was fun!

I’ve shown my old Fujitsu P20-2 monitor previously as a comparison to the current 3440×1440 setup. It’s an old prosumer-grade 1600×1200 display, 20″, 60 Hz S-PVA panel with VGA and DVI inputs. Really good stuff. I got two of them after they failed by the dozen at university, where the tech guys even did a capacitor swap (these were in the upper three-digit Euro range when new, their replacements are totally overpriced 2560×1440 displays for 700€ a pop). […]


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. […]


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. […]


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. […]