01/13/2020 at 11:56 •
Join us for the Open Hardware Summit on March 13th in New York City:
It will be the 10th anniversary and @Sophi Kravitz will be giving a keynote. More speakers will be announced soon!
12/26/2019 at 15:32 •
This action plugin adds and deletes teardrops to a PCB.
This implementation uses zones instead of arcs. This allows to comply with DRC rules by simply rebuild all zones. You can also modify their shape by simply modifying the zone outline (like any other zone). Teardrops created with this script use a specific priority (0x4242) to be recognized as teardrops.
My flex “business card” will fold over a coin cell battery to light a 0603 LED.
Curious how the plugin works? It creates zones next to the vias and pads. Here are the two teardrop zones that connect traces to a via:
You also need to be careful that there is not copper on the same layer too close to the zone. For example, the text was too close to the teardrop zone on this via, so I moved the text down and the zone now fills correctly:
An open GitHub issue is that the teardrop zone does not align perfectly for SMD pads that are not circles (like rectangles, squares, rounded rectangles). The work around I used was to move the zone after it is filled to align with my SMD pad:
I hope you have fun with this plugin and leave a comment if you use it your own design!
12/20/2019 at 17:16 •
Jacob Creedon designed an a cartridge board that adds 32MB of SDRAM to the Hackaday Supercon badge. Michael Welling just assembled a version of the PCB made with the OSH Park “After Dark” black FR-4 service:
Read more about “Team Linux on Badge” in this Hackaday post:
And finally, receiving the biggest applause was Linux-on-Badge: this team used all the badge hacking tricks in the book. The hardware component was a 32 MiB SDRAM cartridge by [Jacob Creedon]. The default badge SOC FPGA bitstream was entirely replaced in order to support a minimalist Linux. Much of the development was done on [Michael Welling]’s computer, guided by the precedence of a LiteX project putting Linux on the Radiona ULX3S. This is a true success story of Supercon collaboration as the team (including [Drew Fustini], [Tim Ansell], [Sean Cross], and many others) came together and worked late into nights, drawing from the massive body of collective expertise of the community.
Watch the demo during the Badge Hacking ceremony (jump to 17m 35s):
- KiCad design files are available on GitHub: jcreedon/dram-cart
- Modification to LiteX for the FPGA to use the SDRAM: mwelling/litex-boards
- Shared project on OSH Park: Hackaday Supercon badge SDRAM cartridge