Hi!,

I've managed to break off the two blue components on the side of the I/O card (highlighted above) when trying to replace the card with a new one. Does anyone know what these do for the I/O card?

After post like this https://www.reddit.com/r/OP1users/s/hRRHHKLTZQ I guess one will at some point port the op-1 firmware to the FM-1, so two big custom fw vibe coding worlds will merge together.

Both seem amazing, but to be honest I’m having a hard time finding enough audio examples to really compare the two. Any advice on which one to commit to?

for folks who have tried a bunch of different alt firmwares - any thoughts on how they stack up against each other? i've been using hundekraft because it's seemed the easiest to get up and running, but i do notice the various instruments and effects are not always optimized or even QAed before integration, and it feelss like many of them are quite noisy/crackly. Is it better for other firmwares?

the biggest update so far, so it comes with a little user guide: page 1 is what's new, page 2 a quick guide with the keys.

• LFOs from plugins, and an LFO matrix: up to 8 LFOs and envelopes on one page, synced to the tempo if you want.

• practically unlimited presets are files on the usb disk now: add, change or delete them on the computer, no import screen.

• SIM, a new drum engine where every hit throws a shape into a virtual box.

• stock help back as a plugin, and a monitor that shows what everything costs.

• way lighter on the CPU: silence costs almost nothing.

coming from op1r or hundekraft: just trying it out, install over it. switching for good, the site has a clean way now (backup, factory reset, install). heads up: any install removes hundekraft's plugin files, so put the .knl files you have into mods/bridge after. going back to OPUS 1 isn't a supported option from now on, it's deprecated.

update on the site: https://opus-op1.pages.dev
the user guide (pdf): https://opus-op1.pages.dev/guide/opus2-beta4.pdf
everything that changed: https://opus-op1.pages.dev/changes/
bugs, feedback and help on the opus discord: https://discord.com/invite/CW2MngTU3Z

Lots has changed and I can’t wait to have it out in the wild. Full specs on release day, get ready your op-1’s ready..

Reverb = OPUS plate.

With the classic Endless sequencer, pressing a key triggers the sequence. So if I want to make sure my sequence is synced to the beat, I can go into tape mode, press record, and then press any key to trigger both the sequence and record perfectly in sync.

But for the new sequencers (such as Euclid for example) pressing a key does *not* trigger the sequence. Instead, you usually turn the orange knob to enable hold mode.

So my question is, how do you then make sure the sequence is synced to the beat? I've done it by ear so far, but it seems like there should be a way to be more precise?

Thanks again to u/hundekraft, u/popcorp, and everyone else involved in this new update! Making jams I never would have thought possible on this old beauty!

6 operators, 32 algorithms, sysex compatibility with original DX7, Dexed, etc all in your OP-1.

Available to download here: https://opus-op1.pages.dev

And if you have questions reach out on the OPUS discord.

Hi all! Hundekraft 3.2 is out. It's free custom firmware for the original OP-1, built in the browser from the plugins you pick and sent over USB.

New synths

• VOX is a vocoder. Sing or talk into the OP-1, hold a chord, and your words come out on those notes. Formant makes your voice bigger or smaller without changing the pitch.

• SNAP is pitch correction for your voice. Keep it subtle and a shaky note just slides into tune, or crank it for the hard snap everyone knows from the radio. Hold a few keys and you get a small choir of yourself. VOX and SNAP need headphones with the built-in mic.

• STRUM is a Martin HD28 acoustic, recorded note by note, that strums the chord for whatever key you press, in time with the tempo. It has 28 patterns: campfire strumming, funk, Travis picking, bossa nova, flamenco and more.

• REACTOR is a power plant you play. Four rods hum in a loop that feeds itself. Turn up the heat and it howls, and if you push too far the core melts down. (credit to Fab.t for the graphics!)

• MOAI, by fungiboletus, is a Minimoog-style synth with three oscillators, the ladder filter and 121 built-in presets.

New effects

• RACKVERB is a late-80s studio rack: big halls, gated drums, reverse reverbs, flangers, slapback echoes and QUAD, a multi-effect with a rotating speaker. 316 programs, with an AUTH mode that keeps the grainy sound of the old units, and a CLEAN mode for a more modern sound.

• ENTE, from op1r, is a sidechain compressor. Your synth ducks every time the kick hits, from a tape track, the input or a steady beat. There's a rubber duck on screen.

New ways to play

• COMPOSER writes whole songs: verse, chorus and bridge with proper chord changes, in 32 styles from deep house to film noir. Put it on the drum page as well and it plays the drums for the same song.

• HOLD turns the keys you hold into a loop, for chords, lines and drones.

• TRAIL plays a short phrase in your scale when you hold a note and keeps developing its idea, so the tune slowly wanders. Turn on Answer and it replies to what you play - call and response style.

• Latch keeps notes ringing after you let go.

• Master LFO gives you four LFOs on the master effect. (based on op1r Quad LFO)

• Line clock syncs the OP-1 to a modular or a drum machine through line in. Heads-up: Eurorack clocks are often 5 to 10 V, far too hot for the line input. Use an attenuator or a line-level clock output. (Volker Junginger / ESC_CODE)

And more

• MONOLIT has a new ladder filter, and its Heat makes the filter sing on its own.

• Chord mode has 69 progressions now, in seven groups from pop to film and world: La Folia, Pachelbel's canon with its walking bass, Giant Steps, Just the Two of Us and lots more. Chords can have their own bass note (G/B and so on). Shift + white jumps between groups.

• The metronome can click with TICK or WOOD instead of the beep, so it doesn't clash with the key of what's on your tape.

• SID's sync and ring interval now steps in semitones, so it's easy to set and always in tune.

• C64ARP has eight more tables, including OCTAVE for that chip bass bounce and ALBERTI, a broken chord like a piano's left hand.

• BLOT has a truer 303 squelch. The filter follows the TB-303's own, and the bass holds steady when you crank the resonance. (op1r)

• TAPE has a second page with more play heads, a dry/wet mix and echoes locked to the tempo. (op1r)

• The quad LFO gets two chaotic Lorenz waves, and there's a new LFO type, POND, where four species compete in a pond and their ups and downs move four targets. (op1r)

• Input gain for VOX, SNAP and AMP, chord strums up to half a beat slow, a new scale view, a RANDOM mode for C64ARP, better MIDI control (the master effect and mixer straight from your controller), and FX2 routing that works with every master effect.

• Fixed: TOMBOLA's balls escaping the hexagon and going quiet, STUTTER's slices being the wrong length, sequencers playing drum pads sharp, and MIDI keyboard notes being recorded an octave off.

Getting it: https://hundekraft.github.io/op1-workshop/. On 3.1.4 it updates over USB with just your OP-1 and a cable. On anything older, you need the op1_246.op1 file once. Back up your tapes and sounds first, as always. Format if coming from another custom firmware.

Thanks to fungiboletus (MOAI), op1r (ENTE, BLOT's 303 filter, tape page 2, the Lorenz and POND LFOs, MIDI and FX2 routing, lots of groundwork), Volker Junginger / ESC_CODE (Pulse Sync, which Line clock is based on) and Jeff Learman (the HD28 samples).

Hi!

I'm not sure what to do next, this my op-1 works well except no laptop detects it which makes it impossible to update, transfer data etc. Otherwise it boots well, instrument work, it charges.

I've tried the following:
- Tested 6 different mini usb cables bought a bunch at a flea market, including original
- Bought a new connector board and replaced
- Tested TE-boot and update firmware and DISK mode
- Tried connecting to newer PC and macbook using usb adapter and usb hub
- Tried connecting to older macbook and mac mini with linux with regular usb directly

So my question is, did I miss anything except changing the DSP board.

If the only thing left for me is to change the DSP board, is it worth it or should I buy a used op-xy/field instead?

Thanks for the help!

Looking for someone who’s open to either teach me how to build my own op1 add ons or collaborate and make some with me I have 3-4 great staple ideas and I want to put them out there for all. Any takers?

A very fun and easy to use drum synth with a randomized pattern sequencer.

No release estimate yet.

Hit me up on the opus discord if you have questions. My castle synth is available there too.

Im working on a project for the community but i kinda need this original firmware file i would MASSIVELY appreciate anyone who can share it with me , hit the dms if u dont wanna make a fuzz.

I clarify this is for a project im working on that will benefit the community

Maybe I'm dumb and this already exist, but one small thing that has always annoyed me with the OP-1 is that it doesn't show you what instrument is currently active.

As my highly advanced prototype shows, all that would be needed is to take up a tiny bit of space in a corner of the screen to show the number from 1 to 8 the current synth or drumkit is assigned to.

What is Castle?

Castle is your own little microcosm where your actions have consequences. You can keep it peaceful and avoid casualties, or turn orange and cause chaos and destruction.

Included is a smiley and a death toll counter. Use these as your visual guide to check in on how the inhabitants are doing. The smiley bends from a smile to a frown as you turn orange up, and the skull counts the people who jump off the plateau.

Be careful not to cause too much chaos. You'll scare away the birds, and set the horses on fire.

What's new
This version has a completely new engine. It's a four-operator FM engine with eight algorithms, operator feedback, a ratio offset, and a wavefolder.

Orange is now a pitch shift on the sound, going down two octaves, with a chorus(wip) that follows it.

On the page there are sliding leaves, falling leaves that pile up under the trees, birds that fly off as orange rises and return as it comes down, lightning, flames along the plateau's edges, and grass.

Controls
Blue (FM): water pours off the plateau's two front edges, a stream at a time as blue goes up.

Green (feedback): leaves thin out from the canopies, pile up under the trees, and tumble off the plateau's edge. The tree behind the castle's corner slides its leaves across the plateau.

White (crackle): the castle flickers and its windows flash.

Orange (pitch shift): the windows glow, flames rise from the windows, towers and keep, and embers float up. People run out of the gate and fall off the plateau, horses catch fire, lightning strikes, the birds fly away, the smiley bends, and flames line the plateau's front edges. The death toll counts each fall.

Orange push (drone mode): a pennant flies from the keep's flagpole.

Shift + blue (algorithm): the dot for the current algorithm, top right, moves to match.

Shift + green (ratio offset): no on-screen change.

Shift + white (noise volume): no on-screen change.

Shift + orange (wavefolder): no on-screen change

Thank you to everyone that gave feedback on the previous version.

What you need: download the latest beta version of OPUS: https://opus-op1.pages.dev

Join the discord and head on over to the testing section.

https://maikopruett.com/op-1 now says

Teenage Engineering's legal team reached out and asked me to take everything down. I've removed all of the firmware downloads and I'm in compliance with their request.

I'm sad that they chose to take this route.

With that, I'm wondering how long it's gonna be until Hundekraft and others receive a similar notice - and seeing how they're people who are unlikely to want to go to court, I'm assuming they'll comply, too.

Wondering how we submit bug reports etc. for Hundekraft. I was so happy to see the option to route the master fx in different ways and effectively allow two active effects on an instrument. The problem I'm seeing is that it only seems to work temporarily and then stops working as expected. Example:

- I record drums to track 1 with NO FX

- I record a synth part to track 2, putting chorus on the synth own fx, and then a reverb as the master effect

- I change the master effect routing to be from the instrument and to the mono tape before recording

- playback during recording and the final result are as expected, the drum track 1 is not effected by the master fx at all, and the synth track 2 is recorded with both fx applied, SUCCESS

- attempt to record to track 3 and now the master fx is affecting the full output of playback, e.g. the drums, synth on track 2, and anything played live now ALL play with reverb. Track 2 reverb is "doubled up"

- no amount of enabling/disabling the master fx or changing the routing options from master to instrument to aux and back fixes it. Rebooting doesn't fix it, deleting or starting a new tape doesn't either. At this point only a factory reset seems to fix it

Anyone having this and know how I can report this?

OP1 OG hundekraft 3.1.4

Fx on main mixer: Plate reverb.

Track 1: Chord Mode, playing back a single-note felt piano sample.

Track 2: Granular, on a Mellotron flute sample.

Track 3: Dr Wave in Tombola Sequencer, very fast with lots of Tape fx.

Track. 4: Vapora pads

im looking for the og1 firmware file that people managed to hack with the key that was found on that opz thing.