Here you’ll find a collection of things that I do, make, say and think. A collection of projects I publshare on other sites online. Including; custom built and designed guitar or Hi-Fi amplifiers and effects, custom PC servers, and rescued, upcycled hardware. Simply a central place to collect what I’m doing with some of my a creative rest at any given time.
If you are in search for my professional information go to >JohannesJohansson.com<
For multiple ways to contact me this >linktree< makes it easy.
Categories
- DIY (17)
- DIY Audio (8)
- DIY Computation (6)
- DIY Misc (4)
Random Posts
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Dumble Overdrive Special
The Dumble amplifiers are clearly the highest priced guitar amplifiers ever to exist, and with good, or at least understandable, reason. These amplifiers fetch more […]
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Saving monitors: leaky capacitors
A common issue with electronics are when small insignificant components fail. Fixes then usually only depend on 1) Knowledge/problem solving and 2) 1-2 $/€/£ in […]
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Easy Naim Hifi poweramp upgrades
Why these mods work is quite simple, even very expensive hifi-gear tend to use cheap sonically bad components where size is an issue. With some […]
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PC water cooling: Maintenance
When watercooling a computer the goal is lower temperature and/or better noise to performance ratio, while also allowing for much smaller footprint with quite high […]
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Family & apartment friendly server cabinet
Finding ways to live with an interest in computers can be a challenge. That is having half a dozen computers running 24/7 is not something […]
Tiny 24Core Virtualization/Computation server from hacked hardware!
For some time a good way to get cheap and powerful computers, outside of cutting edge gaming or single-core heft, have been to get used server CPU’s. There is even a interesting hardware hacking community around this practice coming out of China, where chipsets are removed from old server computers and attached to brand new custom motherboards allowing the most insane little unintended uses for server processors. You see, a lot of corporate computation often upgrade masses of computers at a time letting go of the leftovers for quite quite silly cheap money, for instance what I use here cost when new $2.949 (and there is two of them so double this price), now 8years later, you can buy them for $80 or less each… This is a crazy world.
Well, after letting that sink in a bit, it is possible to run a machine such as this, with 24cores 48threads, at 2.5Ghz base 3.5Ghz boost using a hardware hacked motherboard, in a case not much larger than your regular shoe-box. Simplified, that’s about the power of 6 individual laptops of today 2021, perfect for virtual servers and machine-learning, any computation that can be parallelized and does not work on GPU’s. As far as the case go, it had ventilation with far to few openings so required some cutting and installing fan grilles, as well as reorienting flow and adding a fan to the bottom, making a 20C change.
This incredible thing here is in a sub Micro-ATX formfactor, containing the same sockets that usually require a massive server motherboard, hacked together from new and scrounged parts. Sometimes the most fun engineering are not found in cutting edge things.