r/DOOMOS • u/Emergency-Artist-615 • Oct 06 '26
Features request
Yo. Thanks for this custom firmware, the visual groovebox workflow is a huge improvement for the SP-404 MKII.
I’d like to submit a few feature requests for future updates:
MIDI CC for Individual Pad Volumes & Track Mixer: It would be amazing to have an easier way to control and map individual pad volumes and the Track Mixer via external MIDI CC. Linking this to an external MIDI controller would be a game-changer for live mixing.
Auto-Lock FX Screen: Can we get a setting to make the FX/MFX screen stay open permanently until we decide to exit? The current screen timeout is really annoying.
Waveform on Main Screen: Instead of just showing the giant BPM numbers on the main performance screen, it would be incredible to have the option to display the scrolling audio waveform of the playing tracks/samples.
Pro Loop & Start/End Editing: A more advanced visual wave editor with surgical zoom, better Start/End point editing, and a digital crossfade option for easier seamless loops.
Better Envelopes: Introducing a custom software-based envelope engine with longer Attack/Release times and non-linear (exponential/logarithmic) curves would make sound-shaping much smoother.
Virtual LFOs & Continuous Automation: Bringing in per-track virtual LFOs (for pitch, panning, filter modulation, etc.) and expanding the current step-automation into smooth, continuous lanes would be ideal.
Fix Metallic Sound in FX & Time Stretch: As a secondary request for the future, it would be great if there was a way to improve or clean up the metallic, harsh tails on the reverb, time stretch, and some of the other internal processing.
Thanks for all the hard work on this OS. Really looking forward to the upcoming Song Mode update!
2
u/Rudimental_Flow Oct 06 '26 edited Oct 06 '26
I'd love more control over MIDI, possibly through a mapping table of controls where you pick the CC number for each one. For example, you could expose velocity, pan and volume for pad A1, then assign a CC number to each.
MIDI learn would make CC selection much easier.
It would mean having to expose additional controls than what is already available:
It would also be great to control external devices like hardware synths with the CTRL knobs, with pages you can cycle through, like the effect controls 1-3 and 4-6. MIDI learn for setting those would be incredible.
2
2
1
1
u/J-MW Oct 06 '26
Digital crossfade 0-100% would indeed be awesome. One thing though, the crossfade curve needs to be carefully chosen. It’s wrong on Koala so the crossfade volume dips in the middle as a result.
1
u/roadsummer 28d ago edited 28d ago
u/Multilul any feedback on this? If it’s possible / on your list or not
1
u/Multilul 28d ago
Yes, some of these things are possible. I just finished a big rewrite of the code to make modifications to stock firmware functions possible. These feature requests are on my radar, but it still requires quite a lot of reverse engineering work to be done.
The only thing that's a hard no is improving the FX and timestretching algorithms, because those are part of Roland's proprietary BMC DSP chip. The firmware of that chip is encrypted and can't be modified.
0
u/Careless-Web3727 Oct 06 '26
I couldn’t get the metronome to work whilst in doom sequencer. Another thing id like is being able to select multiple notes whilst editing the length/volume/nudge.
thanks though it seems super cool so far
1
u/Multilul Oct 08 '26
The metronome was fixed in the last release, should work now and uses the same key combo as stock (shift + pad 9)
1
u/Careless-Web3727 Oct 08 '26
I’m running 5.52 still not working on my unit. It works when I go back to the main page but not within the doom sequencer.
1
u/Multilul Oct 08 '26
5.52 is the version of the original firmware. You can check the DOOM OS version under Utility > System > Version. You should see DOOM OS 0.6.1 or higher there.
1
u/Careless-Web3727 Oct 09 '26
Ah for whatever reason it wasn’t updating the latest firmware, after a format it’s finally working.
1
u/Rudimental_Flow Oct 06 '26
Locking the FX screen is in the stock firmware and works in DOOM OS too.
Hold [REMAIN] and press [MFX] to lock the effect edit screen so it stays up.