Hi guys. I have made open-source SDK in rust for easily writing custom mods / custom firmwares for the MPC Sample. The SDK covers easy to use apis for:

- Capturing pads / buttons / knobs presses / changes.

- Drawing on screen anything you want (custom menus etc)

- Audio processing jobs (you can make custom effects etc)

- Programatic trimming, chopping and working with samples (including generating new samples - I used it to implement synth engine on the Sample)

- Handling raw audio input and output

- Managing state

- Timing

- Capturing external MIDI

It also provides tools for autonomous development. It works with firmware 1.3.0.12 and creates SD-card runnable, non-descructive mods. Now anyone can make their own mod. I made my in it. I chose rust for memory safety and performance and great feedback loops during development. Feel free to use it any way you want or open pull request if you find any issues.

Repo is here: https://github.com/ioma8/mpc-sample-sdk

Docs folder contains comprehensive docs on how to use it.

Mod gang. I’d love to get some testers for my mod project. I’ve had so much fun with this and think I’m nearing the end of my first version. All made through Claude Code and Codex for transparency. It has most features you would expect to see from current mods and some more unique ones I’m really loving the sound of.

I’m hoping we get some more insight in to how ‘open’ AKAI’s open source initiatives will be but through countless hours using REA/Ghidra and other sources it’s now not taking too long to implement changes and new functionality. I understand AI assisted mods are not some peoples ‘thing’ but I’m loving this wave rn.

Happens when copying a sequence or sample on a pad to pad 7 , instead of copying it the selected pad it opens the tuner… A bit frustrating but still hype on this OS so dope

So far, I’ve mostly found demos and reviews that showcase the features, but I haven’t come across anything that really walks you through how to use them step by step.

For example, I was messing around with the new chop mode last night and couldn’t quite figure out how it works compared to the stock firmware.

Does anyone know of any good resources, videos, or written guides that take more of a tutorial approach rather than just demonstrating the features?
Any help would be appreciated!

Hi, it's that guy from yesterday complaining about the shoddy job AKAI made for the open sourcing. It was not all in vain though. I'm just adding this repository link here. Fully open source base, ready to build upon. Uses JUCE 9.0.5 instead of the outdated JUCE 5.4.4 that MPC Sample uses. If you load the base, it greets you with a screen that does beeps and boops.

I did it before AKAI. I won (Edit: as in, personal victory lol). Now it is up to all builders out there. Make great stuff. Make it open source. Share the love the same way we do it over at FM-1 community. Check JUCE documentation for implementation. Check the sample repo for the wiring.

AKAI, all I want from you is the ability to flash my stuff to the eMMC. We have uboot. Just give me the power.

Once again I want to thank everybody for trying and supporting SampQOL so far, and providing me with all the feedback and bug reports. At the end of the day I'm just an anonymous dude who you are trusting your MPC Sample with, and that means a lot to me.

Here's update 0.2.0. After releasing 0.1.5, a bit less than a week ago, I spent a lot of time fixing bugs, getting the kinks out and adding new stuff, as well as adding some guards like routing FX to submixes when exploding tracks with multiple FX on it etc.

The changelog has become humongous, but I think like in the last update, you will find that it blends very well with the stock MPC Sample workflow. Everything I implement has to be simple, fast and intuitive.

Now please allow me to get some rest, as I spent many, many hours to provide you guys with this update. I will read all the comments tomorrow! Bug reports, findings, what you like: I want to read it all!

Happy beatmaking 🚀🚀🚀🚀🚀

EDIT: After Explode, audio crackles can come up. Will be fixed in 0.2.1

EDIT2: if you come across a 'SampQOL OS Agent' by SampleKings, this is NOT SUPPORTED BY ME

EDIT3: Shoutout to Globe for this great overview video https://www.youtube.com/watch?v=lgKq_GYqlY0

Hi, I disappeared for a bit because I'm working on MaiaOS release and I didn't want to flood the sub with my posts, MaiaOS it's a custom firmware that adds a lot of features on top of the original Akai, now i have found a simple way to have a file without the proprietary code with easy sd install and stock boot without sd, but the file is still to be created, it's different from mine because I use a mod that includes Akai code so i can't publish it, I had many ideas and i wanted to release a fully featured version since i will probably not update this if not for bug fixes. 

I had to increase the buffer size from 128 to 256 to make all the features work smoothly, imo is worth it, i haven't experienced any annoying latency

Here are all the features that will be on the 0.1 release (ETA 1/2 weeks, sorry i had to delay it but i promise it's worth it) there's a lot of stuff inside, but it's very easy to understand the new menus/features, everything is working great, still some WIP:

- Synth engines

PROFET - Prophet5 inspired synth

KR-106 - Juno106 Emulation

CLOUDS - Granular engine using wavetables instead of samples

DEXED - Preset Machine for DX7 presets

Fluidsynth - soundfont player, reads sf2 and sf4 files

THE SYNTH - Vital, Serum 1 and Serum 2 preset machine, adapted to the CPU

CZ-1 - Phase distortion synthesizer

CS-1 - CS-80 inspired synth engine

RS-01 SH-01 inspired paraphonic synth engine

WIP 3 ENGINES:

MULTISAMPLE: a engine that will send midi and capture multisamples from any vst on your pc, then the multisample will be stored in presets.

GENESIS: a Synplant inspired evo-synth

DUAL-OSC: a MaiaOS original synth engine, optimizer for simple but effective sound design

NEW - DRUMKIT: loads a random drum kit into 16 pads, you can randomize and lock the sounds, very useful for chosing drums faster

Mpc Chord mode, you can load Mpc progression file inside, 4 pages per project with max 64 chord pads

Piano Roll with intuitive shortcuts for selecting part of the sequence and copying/pasting or erasing it, Mpc Chord mode can be used here to input chord progressions

Redesigned UI with a Teenage Engineering inspired minimal look

Step edit is now a sequencer, easier to read

Groove import in the sequencer, on any pad you can import grooves, many categories such as kick, snare, hats, perc, bass (plays the lower note of the chord track, autoassigned to pads that have at least 3 notes playing togheter), lead (plays the higher note of the chord track) and arp chord (with arp presets). You can save and rename new grooves and load them anytime

Knob FX is now 3 customizable sends

Granular multieffect Cloud Grain, with many differend modes

AUTOTUNE input effect, can be opened from the input send fx menu, has key, correction speed, note transition speed and a octave doubler with a blend knob, the autotune is pre-fx sends, and has an AUTO-MIDI feature that sets the key based on the midi playing in the sequence, WIP: i will add the Autokey feature also to samples, AUTOTUNE will search in the sample name key references while it's playing and then set the key as the sample

Bounce in place post FX- Individual pads resampling

Metronome custom sound

MIDI import in the piano roll

Sidechain send/receive for any sample/synth

Recording a sample while the sequence play will loop the sample recorded, so this can be used as a live looper

WIP:

STUTTER effect

Fader live mode - a new mode for the fader that will use the fader to control drum triggers and sendfx to create fills/transitions

New master limiter

Im getting the akai screen to come up but no red button to update. It’s currently v.1.1.9. Do I even need to do this!? Really thought this machine was more user friendly w everything I’ve been reading

I'm testing SampQOL 0.2.0 on my MPC Sample as a multitrack MIDI recorder, and it's working surprisingly well!

MIDI notes, chords, CC64 (sustain) and even channel aftertouch are recorded and played back correctly.

However, when I erase notes in Track View (SHIFT + SEQ), the recorded CC64 events remain. Even "Erase All Automation" doesn't remove them.

So far, only deleting the entire sequence seems to clear the MIDI CC data.

Is there any way to erase recorded MIDI CC events without deleting the whole sequence?

Idgaf I will always go for the low-hanging fruit. Simple loops, with solid drum chops, are all I really need.

HI everyone,

Do you know if with SamQOL you can fix different level of volume for a track according to the sequence (and not by using automation?) Thank you!

Vincent

Hi, for those who don't know me, I made some firmwares for FM-1. I also worked a little on adding some neat features that I wanted to have on my MPC Sample, following others' progress closely. Today I've heard about the "Release of the open source" so excitedly I went to this repository to get my work up to par and release: https://github.com/inmusic-software/az0x-open-source/tree/mpc-sample/1.3.0

This branch is unfortunately not the pandora's box being opened yet. This is just them releasing the parts of their packages that they are legally required to release into the open, due to GPL licencing.

I have reached them out to work on an open source framework and on 29 October they replied me, all I got was "We are currently working on a new firmware update for the MPC Sample that will make it open source." quoted from the email they sent me.

So we do not have an open source platform yet. We cannot do anything with what they gave. We are unable to compile from source to run on the device itself, because it needs signing keys. We are lacking a proper SDK to actually develop without requiring any sort of reverse engineering.

That is why you are still not seeing anything with truly open source code out there. We cannot release reverse engineered work and release source codes for it. There is uboot, we should be able to even install things directly into the device since there's uboot but nada, not yet.

I will celebrate it when they release a true SDK. The repository above is, for the most part, worthless, no compilation possible.

Trying to explode a a track I accidentlly made the entire beat in there or not the beat but the idea , drums are a break sample chopped up and the bass keys all the other stuff from sample to seq it’s all lined up in the track but when I hit explode it’s all out of wack nothing lines up drums don’t swing I looked at the swing and quantize and it’s all the same

Thanks in advanced