Reply 121 of 433, by carlostex
Great job, very nice to see this progress.
Reply 122 of 433, by JonSmith
Thumbs up! Can't wait!
Reply 123 of 433, by carlostex
I'm interested in a couple of PCB's, if you plan to make them available.
Reply 124 of 433, by keropi
matze79 are these changes documented so I can replicate them?
Reply 125 of 433, by matze79
Reply 126 of 433, by ITzTravelInTime
I hope you post some pcb files or something like that, i'd like to play with the disgn a little bit (just to match the holes and the headphone jack position to use the metal bracket i use for the adlib clone) and also because i'd like to build one from scratch, what a bout availability in the future? i'd like to use it with my upcoming pc xt build
Reply 127 of 433, by root42
more or less 😀
i send you a PM keropi.
Carlostex, we working out the bugs, i'm sure it will be avaible soon on serdaco 😀
I also still have one of your early prototype boards. Any chance I can upgrade it as well?
Reply 128 of 433, by mil
I am also interested in a couple of PCB's.
Reply 129 of 433, by matze79
Reply 130 of 433, by matze79
Reply 131 of 433, by Scali
Looks great! I love the volume wheel!
Reply 132 of 433, by root42
Reply 133 of 433, by keropi
yep - it looks very nice !
Reply 134 of 433, by matze79
Reply 135 of 433, by root42
Reply 136 of 433, by matze79
looks lovley but has EMV problems.. so needs redesign i cut few things on the pcb and wired the gnd and vcc directly to power supply and so on..
still noise inside the signal.
my two testing boards on perfboard did work fine.. so it must have todo with the pcb design..
Reply 137 of 433, by root42
That is something that eludes me completely. How does one go about reducing noise on the PCB level? I remember one video by Dave from EEVblog where he simply added two layers to an already two layer board, simply by adding one pure GND and VCC plane, iirc. That supposedly reduced emissions as well. Not sure about the physics behind that.
Reply 138 of 433, by matze79
Reply 139 of 433, by Tiido
Planes increase parasitic capacitance, which (un)intentionally helps to round off the signal edges slightly which will reduce emissions. Their main positive effect comes from reduction of loop area on return currents etc., the noise can couple straight into the plane rather than through other stuff elsewhere, so less has to radiate outwards or into other stuff.