Anthony Lieuallen made this custom power supply and wrote a post on his blog detailing its assembly: You might not truly be an electronics nerd until you build your own power supply. Either way, I’ve finally passed that threshold. As I’ve mentioned previously (and previouslier), I’ve been working on mine — very slowly, off and […]
Tag Archives: build log
Ultra MegaMax Dominator (UMMD) 3D printer
Mark Rehorst has a nice write-up about building his Ultra MegaMax Dominator (aka UMMD) 3D printer: Ultra MegaMax Dominator (aka UMMD) is my third 3D printer design/build. I used much of what I learned from its predecessors, and tried a few experiments, resulting in a very high quality machine that produces very high quality prints. […]
A two channel SI5351 signal generator
DuWayne Schmidlkofer has a nice write-up on building a two channel SI5351 signal generator: After getting the sketches written for the SI5351 board written to support multiple display types, I decided I need to write one more. Now that Pete is moving the Simpleceiver to a single conversion super-het, I will have to worry about […]
Electro pet
Facelesstech has a nice build log on his electro pet project, inspired by Circuitbeard’s petduino: I got inspiration for this project from the petduino. The petduino is a great project to get kids into coding and electronics. I thought I would have a go and see if I could add some more features to it. […]
Big F’n 3D printer build
Dan Beaven blogged about his big 3D printer build: Summary of Features: 8 Cubic foot print volume (capable of larger with minor changes – i.e bigger cast aluminum plate) – The reason I chose 1/4″ Cast Aluminum plate was to make sure it was dimensionally stable when heated. Anything else will most likely warp over […]
Jumping robot leg
Ben Katz documented his robotic leg project: Here are the python scripts that send serial commands to the motor controllers. Here are the eagle files, gerbers, and BOM for the motor controllers and sensor boards. When I sent the boards to 3PCB, the text the motor controllers got all scrambled so keep that in mind. […]
Homemade EDM (electric discharge machining) machine
In this video Scorchworks demonstrates his DIY EDM (electric discharge machining) machine : My homemade plunge EDM (electric discharge machining) machine built based on the book “Build an EDM” by Robert Langolois. The book consists of a series of articles that originally appeared in The Home Shop Machinist. I deviated from the book in a couple […]
Project Hathor, a 2KV ring launcher
Check out Krux’s 2kV ring launcher, Project Hathor. He writes: Have you ever wanted to shoot disks of aluminium forty five feet into the air at the press up a button? Do you like experimenting with high energy physics, and learn about things such as impulse generators, charge circuits, Lorentz force, electromagnetic induction, and how to […]
Building a 32K RAM Board
Glitch has posted details on his build of a RAM board for the Challenger III: With a quantity of 495 prototype boards in hand, it was time to build up a RAM board for the Challenger III. My implementation uses a single 32K x 8 static RAM in DIP packaging, which is split up into eight 4K […]
High voltage power supply for Nixie tubes
Limpkin has published a new build: a high voltage power supply for Nixie tubes For quite a while I’ve had this project idea in the back of my head that would involve using many Nixie tubes. These funny looking cold cathode displays were actually introduced during the 1950s and unfortunately need quite a high voltage […]
A 1-meter-diameter small transmitting loop for 7 MHz, part 1
qrp-gaijin has been working on a 1-meter-diameter small transmitting loop for 7 MHz: I’ve decided to try constructing a smaller, more traditional loop of 1-meter diameter. A smaller loop means smaller radiation resistance, and that means that small values of loss resistance become more significant. Great care must be taken in all aspects of construction to minimize […]
Mains 230VAC isolator
Jaanus Kalde has built an isolator box: Probing mains powered schematics is hard. Most oscilloscopes are earth referenced, so connecting ground probe to random spot of mains connected device will make a small explosion. Also there is the risk of electric shock by touching wrong part of the schematic while being in contact with something grounded like […]
Building a simple circuit probe
Vicente Jiménez has published a new build: Sometimes you need to check one circuit and test some of its nodes. Usually a tester in voltage mode is a good solution, but it has a pair of problems. First, it measures about zero both when the node is driven at zero volts and when the node […]
An almost-GHz active differential oscilloscope probe (Part 3)
Christer Weinigel wrote a series of three posts about how he built a active differential scope probe which is usable up to about a GHz: This is part three of a series about building a active differential oscilloscope probe. Part 1 covered why I wanted a differential probe and the design of it. Part 2 […]
X-Carve CNC mill build log & review
Jeremy Blum writes: A few months ago, I built and reviewed the Shapeoko2 CNC mill from Inventables. Now, I’m back to review its successor, the X-Carve. The X-Carve features new-and-improved mechanics, a much sturdier spindle mounting system, and a myriad of other improvements that make it easier than ever to venture into the world of […]
Shapeoko2 CNC Mill build log & review
Jeremy Blum’s review and build-log of the Shapeoko2: I bet you thought that I only had room in my heart for one at-home manufacturing technology! 3D Printing is still my first true manufacturing love, but I’m very excited to share that I’ve started experimenting with CNC milling, too, thanks to the fine folks at Inventables. They […]
Mini MAME cabinet
Greg Kennedy shows you how to make a DIY MAME cabinet project: I started this project by taking stock of my components. Like any good hacker, I have a stack of spare PCs and monitors for occasions like this. I selected a set that was particularly hard to repurpose, due to its crappy CPU, use of […]
DIY 3D printer project
Nerdipedia documented a 3D printer build, called Huey: This is not a general purpose 3D printer. It is the size of a small chest freezer and has a expected build volume over 200 litres. It uses eight drive motors and may require a lot of setting up compared to printrbot or similar. The parts […]
Night light 2.0, part II
Kevin Rye built this Night Light 2.0: And there it is. Definitely not my best work, but it’ll do. I just wanted to use up that last PCB left over from the Tesseract build. I guess it was better to use the PCB for something rather than have it sitting in a parts drawer. I imagined the entire […]
The Tesseract build, Part II
Kevin Rye posted an update on his Tesseract, we wrote about it previously. With the software and hardware for the Tesseract complete, it was time to wrap up the enclosure.