PD Buddy Wye

Clayton G. Hobbs previously created the USB-C PD Buddy Sink and has a new USB-C related project on Hackaday.io:

PD Buddy Wye

Power/data splitter for PD Buddy Sink


As of version 1.1.0 of its firmware, PD Buddy Sink can do USB Power Delivery negotiations while in Setup mode, making requests for new voltages and currents in real time based on user input via a USB CDC-ACM virtual serial port. To make full use of this feature, users need to be able to connect power and data to the PD Buddy Sink simultaneously. This board makes that possible, even with a computer that lacks USB Power Delivery output.
PD Buddy Wye

6502 Expansion Board for Z80 Homebrew

Alasdair Allan writes on Hackster.io:


A 6502-Based Expansion Board for a Z80-Based Homebrew Computer

Up till now I haven’t seen a 6502-based board, and now I’m seeing both at once—a 6502-based expansion board for a Z80-based homebrew computer.   Ben Chong, over at Ancient Computing, has done a lot of work around Spencer Owen’s RC2014 Z80 microcomputer kit, including designing an improved Z80 processor card and a 16550 UART board.


the 6502-based CPU board he’s put together is by far the most impressive. On his site Ben outlines his design process, and deep dives into how he got a 6502-based card to talk to a Z80-based system. This isn’t a trivial feat as the two processors have very different design philosophies—with the 6502 using a strict synchronous bus, and the Z80 using a loosely asynchronous bus. He then talks about software before doing some crude performance testing.

The hardware design files are available on GitHub:


Screenshot from 2017-08-28 01-38-11

ancientcomputing has also shared many projects on OSH Park:


6502 Expansion Board for Z80 Homebrew

The Road from AXIOM Beta Developer Kit to Production Camera

From Sebastian of the Apertus Open Source Cinema Camera project:


The Road from AXIOM Beta Developer Kit to Production Camera

Developer Kits have been shipping for some time now and we are aware that the most pressing question for many of you is “When will the AXIOM Beta evolve from a Developer Kit to being a production ready camera?” This article should help to answer that question, but keep in mind that the camera has been carefully designed to evolve constantly.





The Road from AXIOM Beta Developer Kit to Production Camera