MidiALF is an 8 step DIY friendly MIDI/CV sequencer with 40×2 LCD, 8+2 clickable rotary encoders, 8 LED switches and 8 tactile switches.
Latest firmware: midialf_200
8 steps in 4 sub-sequences which could be linked as two 16 step sub-sequences or one 32 step sequence.
Each sequence contains 10 tracks:
Sequence direction: forward, backward, pendulum, random.
Nonlinear sequence progression modes (same as in MIDIBox SEQ v4):
- forward, backward, replay
- interval, repeat, skip
Conditional triggers for Note, CC1/2 and re-trigger, similar to the ones in Elektron’s RYTM and Digitakt. No more static sequences, spice it up periodically, randomly or manually by pressing the SHIFT key!
Note, Velocity, CC1/2 randomization. Note value can be randomized according to a selected scale which can be different for each step of the sequence. Try mixing different scales in the same sequence, endless joy!
Note re-triggering, 2-16 per step, velocity and pitch modulated, chromatic or restricted to a selected scale. Also can be conditionally triggered. Now you can ratchet just like TD.
Song mode: up to eight steps, each specifies the sequence to play, how many times and at what transposition.
Sequence and step randomization using 167 music scales (thanks to MIDIbox.org).
Real-time and step recording modes: records notes, velocity, legato and CC1/CC2 values.
Two assignable CC LFOs with the period of up to 2 bars and sync to start, sequence and step in addition to free running.
Internal storage for 64 programs each containing 4 sequences with setup parameters and 16 character name.
Sysex send/receive of sequence, program or all programs.
Remote control with CC.
Super stable internal clock based on Mutable Instruments MIDIpal technology, 25-250 BPM.
Optional CV extension board: adds 4 x CV an 4 x Gate outputs.
Firmware upgradable by SysEx.
Eagle .sch/.brd files and v0.92 firmware .hex files files are available here.
Source code: midialf2_src
PCB and MCU
You can purchase MidiALF main board directly from me for US$35.00 and pre-programmed ATmega644p MCU for US$15.00. The CV extension board is US$30. The prices do not include shipping from California, USA. PayPal payments only.
[to be announced]
MidiALF is built around technology developed by Mutable Instruments: most of its hardware components can be found in various MI’s projects (mostly Shruthi-1 and Ambika), while software implementation uses quite a lot of code from MIDIpal. Not to mention the breakthrough Avril programming framework that brought modern C++ programming (read: productivity and sanity) to Atmel MCU world. Without this MidiALF project would not be possible, so thank you, Olivier, for sharing your talent with all of us!
MidiALF v2 Conditions are fully modeled after famous Elektron’s Trig Conditions. Whoever invented them at Elektron is a genius. This invention made the whole concept of sequencing a lot more interesting musically. Thank you, Elektron!