I’ve been playing with some old CTOS-based Convergent NGEN (Burroughs B25, B26, etc) workstations lately. Documentation on these is a little bit sparse, so I decided to keep a log of my notes. This blog post is going to concentrate on running the CTOS operating system on actual period-accurate hardware — not on a virtual …
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Tandy 1000 Upgrades / PS2-Tandy Keyboard Adapter
In this video, I spiff up a Tandy 1000 that I bought on ebay: Purpose: A Tandy 1000 was the second computer that I owned, the first was a Tandy CoCo. Note that I keep a slightly different mental “computers that I owned” list and “computers that I used list”. There are a few computer …
Read MoreRestoring a Convergent Technologies NGEN PC/Workstation (Burroughs B25 / Unisys)
In this set of videos, I work on getting a used Convergent Technologies NGEN computer up and working: In the second video, I figure out the pinout for the 25-pin connector, and I get the keyboard working and the video displayed on an MCE2VGA. In the third video of the series, I design and build …
Read MoreRaspberry Pi Controlled DC Load
In this video, I build a DC electronic load that’s controlled by a raspberry pi. Purpose A DC Load is useful for testing lots of different things. If you have a power supply and want to make sure it’s able to deliver its fully designed potential, then you can use a DC Load to test …
Read MoreNew 3D Printing Channel and Website
Now that I’m doing more and more 3D printing projects, I decided to create a separate channel and website to host the 3D printing projects, and keep this website primarily focused on my electronics projects. The new youtube channel is smbaker-3d-prints. On this channel, I do the occasional filament review, print some models and try …
Read MoreHot Shoe to 1/4-20 Quick Release Magnetic Mount for LumeCube
Short diversion from the usual electronics posts, while I talk about my new camera light… I designed and 3D printed this magnetic quick release mount to attach a LumeCube v2 that I recently purchased to my DSLR camera. Purpose I noticed recently that my camera lighting is sometimes lousy, the Polaroid light that I had …
Read MoreBuilding a Power-over-Ethernet (PoE) Power supply using a DPS5005 module
In this video, I design an build a PoE-powered lab power supply. Purpose What can I say, I like building power supplies. 🙂 Seriously though, I’ve been looking for a reason to play with these DPS5005 and related modules ever since seeing them on popular forums and video blogs. The DPS5005 is relatively well regarded, …
Read MoreScott’s FrankenNUC: 10Gbe Fiber Network on a 5th Generation Intel NUC 5i7RYH
In this post, I modify my 5th generation NUC to support 10Gbe fiber networking: Purpose A popular trend in homelabs is power efficiency. While some people are still buying every power-hungry used R710 they can find on eBay, others are going the opposite route, trying to maximize performance per watt. In my opinion, there’s no …
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