I know that @HAGIWO also runs exposed copper rails of +12V and GND on the back of blank PCBs used as faceplates, for ease of wiring up components. I’ve seen it done a few more times but can’t readily find a link.
How safe are they? How reliable are they? Why isn’t it more common? Any practical concerns?
Size is at a premium in Eurorack, but not in Kosmo, so why not do this more? It would also be possible to use SMD (maybe with JLC’s assembly service), to ensure capacitors and transistors can’t risk being bent, and to conceal it on the back if you are ashamed to put your components on display.
Rich said all that needed to be said. I’ve felt it’s less like something I would use and more like a demonstration that things can be in inappropriate places, like filling a Nintendo 64 controller with Heinz baked beans.
I have bad patch cable hygiene, I often just pull out one end of a cable and leave it dangling. Sometimes I worry that I might short it out against something inadvertently and I guess having those +/- 12v pin headers sticking out might slightly raise the risk of that happening?
I like it because it saves on the costs of boards and I’m super cheap. But I’m also rowdy and inconsiderate, so I’d put the components on the other side to keep them from being knocked around. It also opens up the possibility of finger-based circuit bending, if you’re into that.
Main issue I see with it is PCB is flexible and there’s a reasonable amount of force involved in plugging and unplugging. Solder is not a fan of such mechanical stress and neither are most surface mount capacitors.
I haven’t done it or even seen it in person myself, but do I want to experiment with that technique someday.
It has been mentioned a couple of times in this forum.
A search of “back mounted LED” leads to links to these articles which could be good starting points.
Never done it for synths but in many of the projects ive done for schools i keep components exposed so i can point and talk about what’s happening.
It looks fun and different which always draws me in.
Front, back, on show or crammed in an intricate latice of dead bug wiring and no pcb at all.
Your projects, so you decide.
Grand stuff, im interested to see how far you take this.
Some of the worst instruments in history show their guts… As do some of the best. Crack on sir!