PROGUE - Analog mono synth - AUDIO DEMO

[Stoneyards]

Me too, as an early builder... cool project.

[realitycontrol]

Looks amazing, nice, neat design. I'll be following this and would be down for soldering the SMD parts meself.

[LSuveg1]

I'd love to build one - I prefer SMD to through hole, so this is great.

[JanneI]

Hi all. Just an quick update on this. The prototype had just a couple of easily fixed issues and I decided that extra testing is not needed. Also, due to Covid situation shipping times are near ridiculous, so I rather build&test them myself more efficiently. Sorry guys.

The next step towards the "release version" is to add built-in MIDI and DCDC converter for PSU (proto has header for midi-implant and 7815/7915's).

I have done a few demos, which I will post soon.

[Spliffgroen]

Nice! Thanks!

[JanneI]

Walkthrough of the prototype is in youtube:

[autodafe]

any chance you would sell a PCB for this?

[JanneI]

any chance you would sell a PCB for this?

There will be PCBs available once REV2 is done. Please read my post above.

[ashleym]

Any chance of sync via contour as that’s a killer feature?

[JanneI]

Any chance of sync via contour as that’s a killer feature?

Filter envelope can modulate osc2 pitch, if that's what you mean? That's demonstrated on the video around 4:40

[werock]

Sounds great!

[ashleym]

Filter envelope can modulate osc2 pitch, if that's what you mean? That's demonstrated on the video around 4:40

I’ll watch it and learn. Thanks for replying

[Spliffgroen]

Superb video!

[djs]

Is the switch for octave backwards? Meaning the legend is correct, but the lowest pitch should be the switch moved to the left?

[devinw1]

Great video Janne!

I need to get you to start doing the production on my stuff lol! Top notch!

[JanneI]

Is the switch for octave backwards? Meaning the legend is correct, but the lowest pitch should be the switch moved to the left?

Yes, hence the name "prototype". There's also a couple of wrong taper pots on this proto just because I got frustrated with the shipping delays :-) All fixed of course for the release version.

[JanneI]

Progue REV2.0 is on the drawing table. Component count so far: 932

I'm hoping to finish this in a week or so, and get it tested in a month. If all goes well this should be available for purchase by the end of the year. The BOM is 90% ready, but I don't have an estimate of the costs yet. More videos to come later!

[djs]

Are you selling it as a bare pcb or with some components on it already? Anything weird/rare on it?

[JanneI]

Are you selling it as a bare pcb or with some components on it already? Anything weird/rare on it?

Probably both, but at least bare PCBs. Nothing rare really, but some components needs to be purchased from other than mouser. It's mostly SMD, so it's going to be a medium level SMD task, or if I'll also get a SMD pre-soldered version it's a really easy through-hole project. I do need to make an "interest check" when once first REV2.0 proto is working if I'm going to order a pre-soldered run.

[djs]

Bump- just wondering how this is going?

[DCDanno]

Wow, nice job JanneI! Just seeing this, I'm in for a bare PCB, but if you end up doing the SMD pre-soldered version, I'll go with that.

[MoyaMoya]

Would be interesting to incorporate the polyohony function of MG-1

[JanneI]

A quick update: I've been too busy with work-related stuff, but REV2 board is finally getting done. Still some component details to verify, BOM optimizations to be done, but I should be ordering these REV2 protoboard in a couple of days. I'll keep you posted!

Compared to REV1, the REV2 has:
- DCDC converter based PSU with separate regulated rails for MCU & DAC
- Built-in midi
- Dip switches for: midi ch, priority mode, re-trig/legato, ModWheel/AT
- Panel Switch for ModWheel/AT (LFO amount) routing to VCO, VCF, Both
- Small adjustments on the analog side
- A separate output board for the back panel connectors
- ..and maybe a bonus or two!

As you can probably see from the picture, there's a couple of really small SMD components (ie. DAC), so PCB only option is not suitable for beginners. Let's see if I'll do a pre-soldered SMD version for sale, because then this project will be pretty easy DIY project!

-Janne

[djs]

looks great! How small are the SMD DACs? 0805? 0402?

[KSS]

See U28 in the pic. Between the 2nd and 3rd pot in the upper row. Compare it with the others bigger nearby.
DAC is an IC. The sizes you listed are for discrete parts like caps and resistors.

edit: technically the 3rd and 4th pot as there's one far left in that row