Recent Posts

Address decoding

Before writing any software for Y Ddraig the CPLD will need to be programmed. The CPLD being used here is a Xilinx XC95108 and it is responsible for the addr...

PCB Populated

It’s been a while since any updates but some progress has been made. I’ve populated one of the PCBs and powered up the board. All seems fine so the next step...

PCBs delivered

I have recieved the new PCBs. Ordered from https://jlcpcb.com/. Initial inspection shows the boards seem to be fine. Next step now is to start building up o...

PCB design re-started

After a long break from the project I have decided to restart the design making a few changes to the board.

Problems with the PCBs

Started to assemble the first circuit board and run into some immediate problems. It turns out that there is a short circuit between the 5V and GND planes on...