From mcu_nerd on Hackaday.io:
A small, easy to assemble board that makes use of old wall warts.
Like many of us, I had a bunch of various wall-warts lying around, but sadly though none of them produced a regulated 5V/3.3V. I had some 78xx regulators around, so I went into KiCad and made a board to make those wall-warts useful! Changing the world by saving old wall warts from the dumpster!
JinGen Lim created this beautiful project:
I had little experience with fabric, but building a lapel out of PCB seemed like something that might just work. PCBs are typically built with extremely high tolerances for its copper and mask layers and still acceptably accurate for the silkscreen.
Sven Gregori on Hackaday.io created a KiCad component and footprint for the Nokia 5110 LCD and created this breakout board to test it:
I just shamelessly measured all there was to measure and created my own KiCad PCB footprint, along with a schematic component.
Once done, I needed a way to verify it would actually work and fit the LCD, so despite how pointless it is, I created my own breakout board as proof of concept and ordered it from OSH Park.
The Nokia 5110/3310 LCD and footprint are available on GitHub:
sgreg has shared the breakout board on OSH Park:
Brian Benchoff writes on Hackaday:
Last week, everyone on Hackaday.io was busy getting their four project logs and illustrations ready for the last call in this round of the Hackaday Prize. These projects are the best of what the Internet of Things has to offer because this is the Internet of Useful things [..]
This is a PoV fidget spinner, which means the leading edges of this tricorn spinner are bedazzled with APA102 LEDs. Persistence-of-vision toys are as old as Hackaday, and the entire idea of a fidget spinner is to spin, so this at least makes sense.
Find out more on the Hackaday.io project page by Matthias:
A WiFi fidget spinner, taken from concept to ordering parts in one weekend
The KiCad design files are available on GitHub:
matthias has shared the board on OSH Park:
Learn how to design a simple add-on board for Raspberry Pi with KiCad in 20 minutes with this new tutorial from Chris Gammell of Contextual Electronics:
This course shows how to make a custom but very simple piece of electronics for the Raspberry Pi platform. The primary purpose is to get users building something in KiCad as fast as possible.
The free course contains four videos:
ChrisGammell has shared the board on OSH Park:
One common complaint we hear from most new KiCAD users relates to schematic and footprint libraries. The trick is to use just one schematic symbol and footprint library each with your project. This way any changes to the default schematic libraries will not affect your project and it will be easy to share your project with others without breaking…
via KiCAD Best Practices: Library Management — Hackaday
From the Rebooting Electronics blog by Steve Mayze:
In the last entry for the Timed LED Lighting Controller, I realised that there are no working examples of an I²C driver for the ATtiny20. I then had to work through the data sheet to implement my own. With that done, I could then start on the application firmware and get the board really working. So this is where my proof of concept becomes the prototype.