Because it consists of 3 types of Wave folders / VCAs the circuit needs quite a bit of space when implemented with thru hole components. So this meant that I ended up designing 3 PCBs, one for I/O and two for the wave folding circuits.
The PCBs are stacked and interconnected using male/female pin headers which I cut to the length I needed, thus creating a sort of signal bus from pcb to pcb. The front panel is an aluminium type ‘pcb’, also ordered from JLCPCB.
The switch caused the distance between the PCB and the front panel to be so large, that the potentiometers would not stick out of the front panel enough to hold the caps properly. Therefore I ended up using small stand offs which I glued to the bottom of the potentiometers to make them ‘taller’, so to speak.
Stacking PCBs this way is kinda neat, although it makes debugging a circuit difficult. I left the pins sticking out at the last PCB so that I could use dupont cables for measurements and debugging.
I’m mainly referring to the positioning of the parts. I usually start out with something like this, placing them according to the ratsnest. Then disable the ratsnest and clean everything up. But don’t take it as criticism, if it works it ain’t stupid haha
Ha, no offence taken! So far I’ve designed only a handful of PCBs, so there definitely is room for improvement. Also I didn’t have all the resistors I needed and had to resort to combining a few to approximate the values required.
That amount of 1M and 10M resistors could really add to the noisyness. The bottom section of the schematic is interesting, I have hard time grasping what actually happens in there.
Oh, oh, oh, when revisiting this post I saw that I have not included the schematics that include the pots and connectors on the front panel. If anyone needs them, let me know.
