Going back to electronic after a 20 years break

 It is taking a bit of time, but getting there. What has changed since the last time : A tinyUSB based DFU bootloader  for the CH32V3x, a bit quirky but good enough for now and a small PCB (basically my first one) to host the CH32V303 and provides the pin out i usually use. Also, i fixed the hosted mode of lnBMP so it behaves like a genuine black magic, i.e. you can have the code running on your PC and use the BMP/lnBMP just as a hardware interface to your board.