OP1R
firmwaregithub.com
Browser patcher for the original OP-1: new synths, effects, a quad LFO, Euclidean sequencer, MIDI CC and scale mode.
Hundekraftv3.0.323 on GitHub
Hundekraft expands the original Teenage Engineering OP-1 with selectable synth engines, drum synthesis, effects, sequencers and performance tools. Its browser workshop builds a personalised firmware from your unmodified R246 update file, then supplies a preset pack matched to the selected features. Sounds range from wavetable, granular and chip synthesis to thumb-piano tones and a virtual analog polysynth, with stutter, modulation and spacious reverb effects. The firmware supports 300 user synth presets. Chord mode, an editable C64-style arpeggiator and a four-track MIDI recorder add ways to develop patterns and automate sound controls. Four independent tapes, undo, loop editing and expanded sampler tools support arranging and recording. After the first installation through the OP-1 boot menu, the workshop can manage plugins and send reviewed updates over USB MIDI. This firmware supports the original OP-1 only; it does not run on the OP-1 Field.
License: GPL-3.0-or-later
Compatible with
Installing third-party firmware can brick your unit and may void its warranty. Back up first and follow the project's instructions. Read the docs.
firmwaregithub.com
Browser patcher for the original OP-1: new synths, effects, a quad LFO, Euclidean sequencer, MIDI CC and scale mode.
firmwarejustinjoe.com
This is an unofficial firmware mod for the original OP-1. It adds a synth engine, a sequencer, six effects, an LFO, chords, scales, a Shift latch on the knob presses and MIDI CC control of almost every knob. It runs on the OP-1's own processor, on top of firmware 246. Your tape, sounds and albums are not touched by installing it.
utilitygithub.com
The tool for unpacking and repacking OP-1 synthesizer firmware. It's based on the collective research we've done at the op-forums.com custom firmware thread. This allows you to access and modify the files within the firmware as well as repacking the files into a valid installable firmware file. Ready made mods are also included in the tool (see Modify). Lastly it is also possible to analyze unpacked firmware to get information such as build version, build time and date, bootloader version etc. Requires • Python3 • Tested on Linux, OS X and Windows 10
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