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Pladask wrote:If I remember correctly SC mostly works on PIC/Microchip microprocessors. There are a bunch of different 32bit PICs to chose from. Coded in C. Doing sound with a PIC32 you'd want the audio to be in/outputted via an external ADAC chip. For delay/looper stuff adding external RAM chips that communicate with the micro is an option.

Are they now???

BetterOffShred wrote:So what 32 bit microcontroller is the basis for the Mechanical Sun ?

PIC32MX470F512H
https://www.microchip.com/wwwproducts/e ... MX470F512H

As Pladask said you want other supporting components hooked up to it too.

here's the schematic. has bugs minor bugs in it, since fixed.
http://dronecloud.org/stuff/mechanical_ ... ematic.jpg

Hey right on dude. It's a truly fantastic device. Thanks for sharing that

My mistake it was the PIC32MX575F256H
Mostly similar.

I've since been considering porting the delay to the PIC32MZ series, since these have the 4Mb internal SRAM that I need for the 14 seconds of audio at the lowest fidelity 18KHz setting. Otherwise I need a $40 external serial MRAM chip for that amount of RAM (because I don't like messing with parallel memory).

You design and program, Pladask assembles, I paint.

UglyCasanova wrote:You design and program, Pladask assembles, I paint.

I support this plan.

I'll bite on to that.

Personally, I'd love to try a SC pedal but I don't care what the box looks like. Obviously it'd be cool if it's in something awesome, but I have pedals in plain enclosures that are killer boxes as well. Whatever suites the mood.

I support lots of notions mused about above.

Plain enclosure on a fantastic pedal? No barrier.

Fantastic enclosure on a fantastic pedal? Double nice.

Of course availability and affordability are thresholds for my personal interaction with anything.
But sometimes pedals are like the rainforest or the polar ice caps. I don't have to see them or
"own" a piece of them in order for me to appreciate that they exist in the world.

UglyCasanova wrote:You design and program, Pladask assembles, I paint.

Haha dream on!

cloudscapes wrote:My mistake it was the PIC32MX575F256H
Mostly similar.

I've since been considering porting the delay to the PIC32MZ series, since these have the 4Mb internal SRAM that I need for the 14 seconds of audio at the lowest fidelity 18KHz setting. Otherwise I need a $40 external serial MRAM chip for that amount of RAM (because I don't like messing with parallel memory).

I've been looking at the Teensy stuff and audio applications. They are pretty customizable, have onboard DAC.. but I'm sort of just dipping my toe at the moment. Bought an Arduino and started messing with the audio shields.

I may pick your brain more in the future

Pladask wrote:

UglyCasanova wrote:You design and program, Pladask assembles, I paint.

Haha dream on!

Well well well... we're only seconds away from announcing that the Mechanical Sun will be the next ILF limited edition pedal...

Fine, i'll assemble. I've got a screw and some cobwebs and everything!

cloudscapes wrote:

BetterOffShred wrote:So what 32 bit microcontroller is the basis for the Mechanical Sun ?

PIC32MX470F512H
https://www.microchip.com/wwwproducts/e ... MX470F512H

As Pladask said you want other supporting components hooked up to it too.

here's the schematic. has bugs minor bugs in it, since fixed.
http://dronecloud.org/stuff/mechanical_ ... ematic.jpg

So you're blending between a high pass and a low pass in filtration stage it looks like to me, did you experiment with a band pass at all, or did the current design yield more extreme frequency sweep?

I count 8 opamp, just out of curiosity did you use a couple of quads? I'm not very savvy at circuit design and I know sometimes you get better results splitting it up into a couple doubles for close noise etc.. though that all seems to be handled by the microprocessor.

Every time I dream of my ultimate delay I always lust after a "repeats only" FX loop - which is pretty easy to do with an added TL072, but do you think with a design like yours it would be best handled by the microprocessor? Not sure if this is even the best place to ask these questions, but since we're all here celebrating your devices why not?