From Mark Smith on the Surf ‘n Circuits blog:
A few years ago, while managing the power management product line at work, I started an initiative with the development team to optimize new products by achieving ESE. ESE stands for Equations = Simulations = Experimentation. The idea is centered on the engineering goal of product design to verify that the systems design equations match the simulation results and ultimately the experimental results.
When these three items match, not only do you understand a system, but you have the best chance to optimize a better solution. I’ll have to say that in today’s mad dash to get new products out the door, achieving ESE is not always possible. But to break through the ordinary and have a chance for the extraordinary, I would say this is a requirement. Since this power supply is just a fun design for an upcoming nixie tube clock project of mine, I have the time to achieve ESE.
The updated schematic, BOM, Kicad Layout, and design files are located at Github:
surfncircuits has shared the board on OSH Park:
Here is a quick video showing six IN-4 Nixie tubes being powered by a 5v iPhone charger:
Valerio Backslashnew has designed a small dock for the Onion Omega 2 and 2+:
I needed the smallest dock i could do, that featured:
- Type A USB host
- Micro USB for power
Here’s what i came up with, i called it dock\new.
It has an onboard linear voltage regulation (i didn’t bother going with a switching one for such low power), magnetics integrated in the RJ45 connector to save space, USB host ESD protection (diode array), USB host PTC fuse.
On the left side there is the RJ45 connector and nothing on the back side of the board, so that you can easily access the MicroSD card on the Omega 2+.
On the right side (the antenna side of the omega) you have the USB type A connector, facing outwards, and the microusb connector for power, facing inwards.
The project is open source (CC-BY-SA 4.0), and the KiCad schematics, board layout and the other files are available on GitHub:
5N44P has shared the board on OSH Park:
Brian Benchoff writes on the Hackaday blog about the recent KiCad presentation at FOSDEM:
Although recent versions of KiCad have made improvements to the way part and footprint libraries are handled, the big upcoming change is that footprint libraries will be installed locally. The Github plugin for library management — a good idea in theory — is no longer the default. Spice simulation is also coming to KiCad. The best demo of the upcoming Spice integration is this relatively old video demonstrating how KiCad turns a schematic into graphs of voltage and current.
The biggest news, however, is the new ability to import Eagle projects. [Wayne] demoed this live on stage, importing an Eagle board and schematic of an Arduino Mega and turning it into a KiCad board and schematic in a matter of seconds. It’s not quite perfect yet, but it’s close and very, very good.
There are, of course, other fancy features that make designing schematics and PCBs easier. Eeschema is getting a better configuration dialog, improved bus and wire dragging, and improved junction handling. Pcbnew is getting rounded rectangle and complex pad shape support, direct export to STEP files, and you’ll soon be able to update the board from the schematic without updating the netlist file. Read that last feature again, slowly. It’s the best news we’ve ever heard.
Jens Hauke designed this charlieplexed 20 LED blinker controlled by an ATTiny45 for the Hackaday Coin Cell Challenge:
This is a small blinky with 20 LEDs powered by one CR2032 coin cell
and with an ATTiny45 brain. The firmware is written in plain C and
compiled with the avr-gcc toolchain. The PCB is a two layer design made
Space efficient daisychained LED placing with shared anode/cathode soldering pads.
Firmware and gerbers are available on GitHub:
Jens has shared the board on OSH Park:
Here is a video of the LED in action:
Wayne Stambaugh from the KiCad project be joining Hack Chat on Hackaday.io this Friday to discuss upcoming plans and features for 2018:
Friday, January 5, 2018 12:00 pm PST
- What new features are on the roadmap for 2018?
- What new features were developed since we chatted in January 2017?
- Under the hood- how KiCad development works
- How can a developer get started helping out?
Alex Glow of Hackster.io takes a look at the OSHWi octopus badge designed by Gustavo Reynaga:
The design files and source code are available on GitHub:
GReynaga has shared the board on OSH Park:
Oshwi Badge HACKSTER Version Rev 1
Guest article written by Kumar Abhishek on the Octavo Systems website:
Three years ago, as a student under the Google Summer of Code program for BeagleBoard.org, I developed BeagleLogic – that turned the BeagleBone Black and its variants into a Logic Analyzer using the Programmable Real-Time Units (PRUs) on the AM335x SoC to capture up to 14 inputs up to 100 MSamples/sec. It is possible to fill up to 300MB of the 512MB DDR RAM in the BeagleBone with logic samples – that’s 3 seconds of data at 8 channels (1.5 secs at 16 channels). I also designed a cape for the system – called the BeagleLogic cape that would allow buffering the external logic signals up to 5V TTL so that they do not damage the BeagleBone.
The launch of Octavo Systems and its OSD3358 SiP got me excited, and the idea of a turnkey version of BeagleLogic was rekindled as the design would be greatly simplified due to the SiP integrating the core components, leaving me to focus on the features I want to add to the system.
From concept to completion, this project took 4 months working on it part-time. I relocated in August so work happened at an even slower pace during that month
The schematics were originally based on the OSD3358, however Jason encouraged me to design based on the newly announced OSD3358-SM as it was smaller and had a more optimized ballmap. The schematics were then migrated to the OSD3358-SM in late July. At the beginning of the routing exercise, I was really apprehensive if the design could be routed in 4 layers but thanks to the optimized ball map of the OSD3358-SM, the routing was easily completed so.