Category: project

Supermicro X9SRW-F small riser mounting adapter (#P24)

More fun with the Supermicro X9SRW (and we’re still not done yet!)

The two X9SRW machines that I got had the same CPU and RAM situation, but one of them was in a 815 (1U) case, and the other one still is in a 825 (2U) one. I scrapped the noisy 815 for my board and allocated the more spacious 825. Fans are not the only thing that differs, though, as the added height also caused Supermicro to exchange the riser card for a different one. While the top riser is just an angled PCIe x8 connector (high up to make room for some heat sinks underneath), the bottom one is a WIO type that distributes 32 lanes in total. […]


Fitting a proprietary Supermicro X9SRW-F into a standard 3U 836 case (#P23)

Blogging’s a bit tedious right now, as shipping parts is rather slow at the moment, and there’s so much going on at work…

This has been in the making for the past two months now. Some very nice dude gave away “old” servers at a popular German hardware forum, but requested local pickup due to the difficult and expensive shipping of entire server chassis. These were decommissioned colocation servers from his own business, aged 7 to 12 years and no longer viable for 24/7 operation – still decent machines for occasional use. […]


Oral-B toothbrush stand generation upgrade (#P22)

After just eleven years of excellent service, my Oral-B 25.526.3/”9500 Triumph” electric toothbrush died from mechanical failure – the gears went a bit toothless (oh the irony), so while vibration was still on, it wouldn’t rotate the brush. I did exchange the NiCd battery some years ago, but the drive cannot be disassembled, so that was a total loss. Meh.
At the time I spent 70€ and this model was on the higher end of the Oral-B product line. 11 years later even the cheapest models are lithium battery based and I would expect essential technology has trickled down to the base models. […]


CR2025/CR2032 battery dummy for power consumption tests and a hungry Supermicro board (#P21)

This bugged me for quite some time now: Ever since a very nice dumpster revealed a stripped Supermicro server chassis including a Supermicro X8DTL board (Dual-1366) to me, the BIOS battery of that system seemed to be empty all the time. You see, I use this machine as an offline backup, so once every couple of months I fire it up, transfer my data, and unplug it from power and ethernet. And almost always it doesn’t start right up because the CMOS data is gone. Ideally it should be a headless unit, so that’s highly inconvenient.

I finally got around to test this – the fix will be another project for some day in the future. […]


3D printed custom tool holders for my workbench (#P21)

Printing time, folks.

I recently had the urge to declutter my work bench. I usually prefer buying tools with proper holders, cases, mounting hooks, you name it. Some however are not offered with one (KS Tools 5.5mm/M3 ratchet wrench! Everything larger is part of the holder), some are only part of my collection (a set of Torx screw drivers T7-T20, so not including T5/T6/T25/T30), and some are one piece only, e.g. calipers. That stuff amassed over the last couple of years and it was time to get that sorted. The table was blocked for no good reason.

So I did. […]


DIY USB Micro panel mount connector (#P13F1)

Oh yeah, that has been sitting around for a while…

Back in June there was a post about two connectors (#P13), and there was one more similar item that just happened to be printed a few days after that post. As far as I can tell, I never made a separate blog post about it.

Well, as there’s another short post coming later today, here’s that little item as a double whammy for today. The USB Micro-B panel mount bracket thingy.

Unsurprisingly it’s closely related to the regular USB-A panel mount case, just a little bit smaller to fit the female end of a USB Micro-to-Micro extension cord. […]


Brennenstuhl PM 231E power meter zero reading fix (#P19)

Quick fix today – a colleague recently complained to me about his Brennenstuhl Schuko power meter only reading a static “0.0W” regardless of the load that was connected to it. Display was fine, the outgoing Schuko was fine (we checked with a 2kW space heater), but the unit would display no power usage at all.

As there’s no long tri-wing bits (bastards!) at work, I took the unit home only to discover that my bits are also too short to reach the damn screws. He said he didn’t care and was ready to buy another unit (I kindly recommended the ELV Energy Master Basic 2, which will serve as comparison unit later), so I drilled into the case to widen access a little. […]


CAT S60 boot loop fix (#P17F1)

Good fucking Lord, that was a ride.
Last Sunday, my phone went out of juice and failed to come back to life. I had some issues with VERY high standby power consumption the entire week before, which caused the 3.8Ah battery to go flat within a work day. And so it did on Sunday when nobody was using it and nobody cared.

Long story short: A friggen weather app created an invalid (cron?) job, which caused the OS to reset indefinitely.

Long version: Boys and girls, root your phones. Even if some idiot banks (1822direkt, *cough*) will block you from running their apps “for security reasons”, having the option to fully backup and restore your phone outweighs that by far. […]


Tesla Model S Pre-Facelift OBD port access (#P18)

You know what…I’m done being busy. From now on, I might be busy because I want to travel, but not because there’s mandatory stuff to be done (in time) with banks, insurance companies and getting ahold of my new…old…Tesla Model S :mrgreen:

I’ve been hooked on buying a Tesla since pre-unveil of the Model 3, but I never came to like the 3 for what it costs here in Germany. Might be different in the US, will be different in the future when buying used will be a serious option. But for now, it was buying a new M3 vs. a used MS, and the latter clearly offers more bang for the buck for me. […]


CAT S60 Telekom Single to Dual SIM unlock (#P17)

Short but rambly one for today, as I’m a tad busy at the moment…
As shown previously, I got a blank CAT S60 phone from work, which got a SIM card added just this week, so this is now my official mobile phone. I wouldn’t normally get a company phone despite all of my colleagues being kept on short leash for quite some time. That’s because my stuff is handy and can be replaced entirely when something goes wrong on graveyard shifts or the weekend, whereas the main production machines are one-offs and need to be fixed asap. That’s why the colleagues get a nice phone (and the occasional stand-by duty), and I got a 600×90 work bench that’s more often than not flooded with broken equipment. […]