Salvagedcircuitry.com is an electronics project website dedicated to the design of purpose-built hardware and electronic repair. Expect greatness.
The 1990s were home to manual tuning radios, Polaroid 600 film, Microsoft Bob and the never ending audible onslaught of manufactured boy bands - not necessarily reliable and easy to use CNC milling machines! This is a guide on how to make a very sad servo-drive, DOS 1.0 based, Intel 486 powered CNC shift some 1s and 0s on an ISA memory card and throw chips again.
As a resident member of the EEVblog Test Equipment Anonymous support group, I have picked up my fair share of old test equipment boat anchors, but my knees buckle at broken recently manufactured oscilloscopes in the sub $200 range. In this case, the Agilent / Keysight Infiniivision X-series oscilloscopes have been an engineer's darling since their introduction around 2008. A lightweight, small,…
I stumbled across a broken Sigma 45mm f/2.8 Art lens for a very cool $58.65 USD that I simply could not resist. I've been eyeing an AF lens in the 50mm range for my recent endeavors with L-mount cameras and this looked like the perfect fit. This lens is commonly found as a kit with the very excellent full-frame Sigma FP camera series. Here is my comprehensive guide to bringing the lens back into…
My trusty Olympus 12mm micro 4/3 lens met its demise after a brief internal cleaning: The lens mount ribbon cable tore. Flex cables are incredibly fragile, especially in tightly integrated electronic assemblies. Chuck it and move on? Not a chance! Time for a KiCad flex PCB design! This article details the complete lens repair process and includes the KiCad files to make your own flex PCB.
There are only several times in life when you get a chance to meet your heroes. Sometimes they don't measure up to the shadow they produce. With the Mamiya RB67, this is far from the case. This 6x7 medium format film studio camera is a heavy, well-built device that is highly treasured among film enthusiasts of all kinds. Its simple operation is complimented by large solid levers and grippy dials…
I was debating which fume extractor to get for my personal electronics lab when I came to a surprising conclusion: none! Every sub $300 fume extractor I came across consisted of a cheap PC fan shoved in some fancy enclosure with a simple spray carbon mesh filter. I happened to pick up a large 120W centrifugal fan from e-waste a few years back as It killed me to see something so useful get so…
Tired of boring 16:9 monitors? Can't stand the growing presence of 21:9 aspect displays? Don't you just want a plain Jane 4:3 aspect desktop monitor like the CRT days of old? This one's for you! This project involves adapting a 28in 4500 x 3000 surface studio monitor to a standardized DisplayPort interface. Modern display interfaces are very demanding and adapting to a proprietary interface will…
Is there anything more satisfying than a good timelapse shot? As someone who appreciates the art of recording and documenting projects, displaying the change over time of any item under observation is incredibly useful and having a tool that makes this process easier and repeatable is a no-brainer. Around the time when the acclaimed cinematographer Philip Bloom was reviewing manual Kessler Crane…
The introduction of high capacity drill batteries such as the Dewalt Flexvolt, Hitachi Multi-volt and Makita XGT have made the proprietary yet well established cinema camera battery formats irrelevant overnight. Not only are cinema batteries esoteric, they are prohibitively expensive and not multipurpose. The shear manufacturing volume of the power tool market outshines the entirety of the cinema…
I'm a big Surface Duo fan, but like many others, I can't quite make the Duo my daily driver just yet. This is my attempt at how I would re-package the Surface Duo to make it more usable on a day-to-day basis. I delve into the CAD process, design hurdles, feature explanations and comment on manufacturability. There's a full non-destructive teardown and some insight into various probing and…
I had a very simple business card for years, but I was just plain tired of it. It was too bland and looked like all of the other business cards that I had amassed over the years. I was catching up on the Amp Hour podcast and in one of the episodes Dave Jones mentioned something that really caught my attention: bring your projects to social events. Most of my projects are not pocket-able, so I…
I found a broken 3 axis gimbal in e-waste in desperate need of repair. Ironically, the carrying case was intact and without a scratch, but the yaw axis motor was missing, the roll axis motor had a bent shaft and the gimbal controller was buried in a birds' nest of wires. There was a whole slew of random carbon fiber bits, accelerometers, and controllers scattered about the case, so clearly someone…
Growing tired of the skipping keys on my worn out Dell multimedia keyboard, I needed a suitable alternative. I checked out the Microsoft Surface Studio a few months back and really enjoyed using the included keyboard, so I figured I would start there. I enjoy typing on laptop-style keyboards, but I truly wanted a wired backlight keyboard, as I enjoy working late into the night. Not being able to…
I built what would become my showcase scooter, featuring everything and the kitchen sink. I stuffed the battery cavity full of electronics, pushed the drive mechanics a bit too hard and broke far too many items to remember. I applied everything I learned from my first scooter build to this scooter with hopes of greater success and dependability. That was my original plan at least. The months…
Sometimes you just want to go fast. Well, at least faster. This project involves upgrading a once under powered recreational electric scooter into a full-fledged transportation machine. Using custom batteries, modified controllers and a bit of electromechanical know-how, I was able to create every college student's dream get-me-to-class-now daily driver.
Ever wanted to make your own weird and oddball lenses for your camera? Tired of using Duct tape and cardboard tubes to make DIY optical assemblies? This guide includes the CAD, technical drawings and renderings of the Micro Four Thirds mount so you can keep creating to your heart's desire.
Have you ever lusted after a brighter lens for your camera, but couldn't quite afford it? Here is an all-inclusive guide to adapt an old scientific/TV lens to the Micro Four Thirds mount. Don't have a spare Micro Four Thirds mount? No problem! This guide includes the CAD, technical drawings and renderings of the Micro Four Thirds mount, along with machining tips and a whole other wealth of…
This is an accurate CAD model of the 27w Round LED Work Light 30 Degree Spot Light, available on amazon for ~$10 each. It is an inexpensive LED unit which is decently constructed and moderately weather sealed. I have seen these used on everything from Jeeps to ATVs to scooters and even as auxiliary reverse lights on larger medium duty trucks. I modeled the version with the 30 degree projection…
Repair of an '89 HP oscilloscope to factory calibration. Originally recovered from an e-waste bin while I was attending my Alma mater. This repair entails replacing the CMOS clock chip by soldering in female pin headers and sourcing a replacement. Calibration was reset to factory standards using HP service manuals.
I could not resist saving a 1970s tape deck from its ultimate demise in the e-waste bins. I simply couldn't get over the build quality of this piece of machinery. This is a quick teardown revealing the assembly methods and construction of a Norwegian made tape deck intended for playback recording and editing of cassette tape. This would sure make a killer midi device rebuild. Oh the possibilities.