Hardware-ize a VST (attempt1)

...and how to do so...
User avatar
antto
KVRAF
2519 posts since 4 Sep, 2006 from 127.0.0.1

Post Sat Jan 04, 2020 5:28 am

well, here we go, waiting for the PCBs and components to arive, no code yet

Image

- cortex M4F, 120MHz 1024K flash, 256K RAM (atsame54n20a)
- PCM3060 stereo audio codec, 96kHz

this is just a test board for now.. because it might not work, it might explode.. who knows

the goal is to port vb303 into this thing
there are many technical unknowns, so i've omitted the sequencer (there's less unknowns there), and i've added the possibility to use the actual original way to obtain the square waveform on this thing, which explains the bunch of components on the left side of the codec.. basically i should be able to run the ramp wave out of one channel, DC coupled, feed it into the magical square waveshaper, and then get the output back into the chip
so i guess this makes it technically a DSP/analog hybrid
the two pots on the left, and the buttons are temporary, for developement and calibration purposes, they will be gone
the other pots and four trimpots are the "parameters", going to ADCs, also the slide switch which is just logic signals (waveform switch)
there's also logic inputs for feeding pitch (6bit), gate/slide/accent from outside, so in theory i could inject those from my x0xb0x sequencer
and there's audio input (mix-in) which also goes into the chip

if this works, there would be a new board, with sequencer and everything
wish me luck :hihi:
It doesn't matter how it sounds..
..as long as it has BASS and it's LOUD!

irc.freenode.net >>> #kvr

User avatar
antto
KVRAF
2519 posts since 4 Sep, 2006 from 127.0.0.1

Re: Hardware-ize a VST (attempt1)

Post Tue Jan 07, 2020 11:27 am

Image
It doesn't matter how it sounds..
..as long as it has BASS and it's LOUD!

irc.freenode.net >>> #kvr

User avatar
antto
KVRAF
2519 posts since 4 Sep, 2006 from 127.0.0.1

Re: Hardware-ize a VST (attempt1)

Post Mon Jan 13, 2020 11:56 am

soldering
Image
It doesn't matter how it sounds..
..as long as it has BASS and it's LOUD!

irc.freenode.net >>> #kvr

User avatar
nix808
KVRAF
3936 posts since 22 Jul, 2006 from Tasmania, Australia

Re: Hardware-ize a VST (attempt1)

Post Mon Jan 13, 2020 2:50 pm

awesome antto!
keep us up to date with the intrinsics,
may the flux capacitor be with u

User avatar
donkey tugger
Boss Lovin' DR
6468 posts since 15 Mar, 2002 from the grimness of yorkshire

Re: Hardware-ize a VST (attempt1)

Post Mon Jan 13, 2020 3:11 pm

antto wrote:
Sat Jan 04, 2020 5:28 am


because it might not work, it might explode.. who knows

:lol: Love it! ..and good luck..

User avatar
antto
KVRAF
2519 posts since 4 Sep, 2006 from 127.0.0.1

Re: Hardware-ize a VST (attempt1)

Post Sat Jan 18, 2020 3:14 am

Image
Image
Image
https://www.youtube.com/watch?v=fhLDsD7NTjY

it's time to try and blink an LED
It doesn't matter how it sounds..
..as long as it has BASS and it's LOUD!

irc.freenode.net >>> #kvr

User avatar
Distorted Horizon
KVRAF
3039 posts since 17 Jan, 2017 from Planet of cats

Re: Hardware-ize a VST (attempt1)

Post Sat Jan 18, 2020 4:53 am

Nice 1 :clap:

User avatar
justin3am
KVRAF
10942 posts since 7 May, 2006 from Southern California

Re: Hardware-ize a VST (attempt1)

Post Sat Jan 18, 2020 8:28 am

That looks really clean considering you are soldering by hand! Especially those QFN packages. Great work!

xtp
KVRian
863 posts since 4 Jun, 2006

Re: Hardware-ize a VST (attempt1)

Post Wed Jan 22, 2020 8:05 pm

:) Wow . . . Awesome!

I have the shakes too much these days to even consider soldering smd, through-hole is bad enough.

User avatar
antto
KVRAF
2519 posts since 4 Sep, 2006 from 127.0.0.1

Re: Hardware-ize a VST (attempt1)

Post Thu Jan 23, 2020 10:29 am

bluh, it turns out the programmer i bought won't work with this chip in my setup (debian / openocd)
much sux, very meh
It doesn't matter how it sounds..
..as long as it has BASS and it's LOUD!

irc.freenode.net >>> #kvr

User avatar
nix808
KVRAF
3936 posts since 22 Jul, 2006 from Tasmania, Australia

Re: Hardware-ize a VST (attempt1)

Post Sat Jan 25, 2020 8:22 pm

damn antto,
best made plans of mice and men

can u change chips or programmers- darn

User avatar
antto
KVRAF
2519 posts since 4 Sep, 2006 from 127.0.0.1

Re: Hardware-ize a VST (attempt1)

Post Sun Jan 26, 2020 5:09 am

nah, if i change the chip then i'd have to throw away the board, i bought a different programmer now, waiting for it to arive

meanwhile, another soldering video
https://www.youtube.com/watch?v=1EcXL-3mMHw
It doesn't matter how it sounds..
..as long as it has BASS and it's LOUD!

irc.freenode.net >>> #kvr

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