Me and Marco build an Flash/debug7interface adapter for our other stardance projects overnight, i acutally made parts of the schematic in the helios one lapse but after some thinking this is a usefull open source adapter and deserves its own project .
So i started by copying the ft4232h part i already made and then i addet some ldos for the ic power and logik power , with that i also addet 3 logic converters wich can be set to 1.8 or 3.3v . i addet 3 gipo headers and a 10pin jtag adapter . A led indicator for power is necessary xD . I laid out the layout and saw the mess , the connector and logic converter ics werent really good to route as they were like an X ;) .. so i remade that 2 TIMESSS . but then i layed the pcb out , routed it all , and did a quick check . After some hours of datasheet hell and lcsc shopping the design was done . You can connect usb-c , then you get 3 buses capable of eg. UART , RS232 , SWD , JTAG …etc .. And an dedicated Jtag port ! .. This was a nice all nighter with @Marco_da_mechanic , he made the case after i gave him the pcb 3d model and it looks faboulus !!
