bobbass4k

I actually have a board for bass for the first time in several years. Mostly DIY ones I've made so I'll need to do some explaining. Currently bedroom auditioning pedals for a new band project so it's not very neat or portable. I'll explain them in rough signal chain order, right to left, bottom to top. Bugle - Simple Active EQ I think based on the EQD Tone Job (I needed one with side jacks) SIlver with scratched graphics - Schalltechnik compressor Revolver Ocelot - OC-2 clone Mario - Parasit studios 1985, multivoice digital synth Jet Set willy - Parasit studios multiwave mega, wavetable synth Boss LS-2 - The dirt pedals in the middle row are on the two loops for blending together. SIlver with white knobs - Traynor TS-50B clone (the tronographic rusty box is a ts50b clone) Monochrome (right of middle row) - ss/bs TAFM clone Bender - Brassmaster clone Ma Beagle - Chunk brown dog clone Small silver - Phase inverter for blending on the LS-2 Silver blue knobs - EQD Westwood clone Black with blue knobs - Darkglass alpha omega clone Duck tales (top right) - Chunk 00funk clone Sci-fi lady head - Boss dimension c chorus clone Space Koala - EQD grand orbiter phaser clone Silver yellow knobs - Boss BF-2 clone Water tribe - Fairfield shallow water clone Acquisitions Incorporated - EQD afterneath clone Futurama - Tremulous Lune tremolo Multi stomp is doing all the delays at the moment. Too much? If less is more then think how much more more would be.

Maybe I'm just being dumb, but most (and certainly mine) audio interfaces only have one USB connection so if you're using the USB to connect to the Pi both ways, then you can't connect to a PC to use a DAW, so you're limited to using the audio outs on the interface and if you want to connect to a DAW you have to add extra devices. Unless you can use the USB outs on the Pi to then connect to a PC, but the documentation doesn't make that clear. Am i just being super dumb?

Riiiight, that's what was confusing me, so you essentially lose the ability to use the USB interface as a USB interface. Not the end of the world but definitely makes it more complicated.

Might be a stupid question but how does audio out work? You connect the USB interface to the Pi for input, are you then limited to the audio out jack from the Pi for output or can you configure the app to send audio to USB which you can then connect back to your DAW PC, essentially using the Pi as a pedal? The documentation doesn't seem to answer it or show a signal chain, and all the setup pictures just seem to show the USB input and power connected to the Pi....

When I built the PLL clone with 25 board mounted knobs and switches I drilled the enclosure so I could solder everything mounted and then just wired it up - worked perfectly first time. The next week I built a simple 4 knob overdrive with maybe 20 components and it took me a 6 hours of troubleshooting to get it to work. The gods work in mysterious ways.

Obviously can't speak to this specific example but you'd be surprised how much of that is manufacturer mandated - semiconductor suppliers are, to put it politely, a high maintenance bunch. A few of them dictate very specific terms to us, including that all products must be shipped in manufacturer supplied packaging - with waffle trays this sometimes means we have to stick one chip in a whole tray...

I can't tell you specifics, but they're from a decent manufacturer...

Not that it helps you much, but if you want the explanation, it's two fold - CPC are just selling at a lower margin, different customer base, different pricing structures. But also CPC has older, lower cost stock, so their sell price is lower. Farnell sell a lot more of this part so the physical stock we have is newer and there's been a price increase. When CPC exhaust that stock their price will go up.

Which component is it? I can take a look CPC is owned by us but they operate entirely independently and have their own stock including their own pricing. They might be selling it at a lower margin, or even cost to burn off stock (at farnell we're not allowed to do that but at CPC they are sometimes)

Nothing different really just adding the inverter in. You could use a LT1054/1044 instead of the the 7660s, just don't connect pins 1 and 8. Slightly odd design

I should be asleep but the layout was so simple it took 5 minutes. The downside is having to read my writing - This is for thr NPN version based on the tag board layout.

Transformer + valves. I got the lightning bit direct so US shipping too. I did run it without the transformer for a while but I was curious.

True to form it's the most of expensive DIY clone I've ever built, by a fairly long way.

The Nobellium - don't know how true it is to the original but sounds pretty good to my ears. Not used it in a while so let me fire it up tonight and give it a check.

I have a sushi box DIY clone of the noble if that's of any interest?

Does anyone have a reliable source for PNP germanium transistors? Got a couple of cheap job lots off ebay (40pcs) and they're all sub 40 hfe garbage. In the past I've gone for low gain silicon ones but they seem to be running out too. Got a TAFM clone to build but need a couple of 60-100 hfe PNPs. Been a long time since i've had to look but the usual sources seem to have dried up.

I got the new boards and the test build worked but it had a nasty hum. I was trouble shooting it but other things got in the way and I never finished. Something to look at over Xmas, I'll PM you the schematic/Gerbers though. I'm very bad at PCB design so there may well be a schoolboy error.

Yup, the conspiracy to commit electronics boards - there's the Noble clone, the bassman and the soldano GTO (high gain) - all excellent and easy builds (HV safety aside). I'm actually enjoying the noble a lot, it's a nice always on pre-recording interface and it takes pedals well.

Moving the "office" around so moving and cataloguing all my pedals - I actually thought I had more than this -

Aion are great - boards are good and documentation is always very good. Good to order from directly as well - they're US based but shipping isn't too bad and Musikding don't sell their bare PCBs anymore. Musikding also great - quick despatch and I've never had any customs/import issues post-brexit. Never had a kit from though TBF, I usually buy bare PCBs.

There's a couple of PCBs I want from deadendfx - anybody interested in splitting shipping? I think they've had issues in the past shipping to the UK so they'll only ship super fancy fast tracked and it's $48...I'll just pay it if need be cos one of them is a pretty years clone and I need that in my life, but if anyone wants anything, good chance to save on shipping... https://www.deadendfx.com/

Yeah footprints are a bit of a pain in Kicad - I tried creating one for TH/SMT together but I got impatient and eventually just bodged it, I just added an extra J201 symbol to the schematic in parallel and set that to an SMD footprint...