Messages

I've built two successful madbean PCBs so far (zombii and sabretooth) but I'm still definitely an electronics newbie....

I love the Mr. potatohead "enclosure" in the build off thread: http://www.madbeanpedals.com/forum/index.php?topic=322.0

I want to build one of my own for a fun challenge, but am wondering what would happen with grounding the parts. My understanding is that all the components need to be grounded to each other via wires, and there is enough incidental contact with metal enclosures that all the components end up sharing the same ground.

Would there be a grounding issue inside a Mr. Potatohead figure since the whole enclosure is made of plastic? I could easily connect everything as usual via wires, but there won't be any metal for the jacks/switches/pots to come in contact with....so would that doom the project to hum?

Like I said, I'm a newbie, so it's possible I don't understand the issue I'm dealing with....but I would prefer to go into the Potatohead project with a workable plan if I can. Does anyone have advice for how to make this work? Or will it work just fine even without a metal enclosure?

Thanks so much!
dave

Hello all,

I'm a DIY noob and am still learning the ropes. I'm pretty sure the addiction is setting in though, because I just ordered my first PCB (sabretooth) and parts for it at PPP last night. Without receiving or building anything, I'm already envisioning the next three I want to build.

I was able to find everything I needed for the Sabretooth at PPP. At least I think so. I know almost nothing about electronics.

My question is about the caps. In the PDF, it says to use:
Xicon General or Hi­Temp radial electrolytic caps, 25v

but the only 47uf cap I was able to find on PPP is:
Xicon Radial Electrolytic Capacitor 16v 47uf 20%       2         $0.15         $0.30

Will this work? I ordered it, but if I need to look somewhere else to find one that is 25 v, not 16v, then I will do it. I'd really like to start out on the best foot by using the right components.

thanks!