Starting with firmware version 2.0, Midi2CV Mk2 has two extra modulation sources: LFO and AHDSR EG which can be assigned to any CV output. These modulation sources are controlled by MIDI CC commands sent from an external MIDI controller connected to MIDI IN.
Firmware update files (.hex and .syx): Midi2CV_Mk2_v200
- frequency: 0.1-100Hz
- shape: triangle, square, ramp up/down, S/H, random PWM, random lines, noise
- free running or reset on note on
- fade in 0 – 10sec
- bipolar or unipolar
- amplitude control
- segments: Attack, Hold, Decay, Sustain, Release
- segment duration: 0-15sec
- segment shape: linear, expo, sine
- legato retrigger: on / off
- MIDI Clock retrigger: 1/32T – 2bars
- auto gate control – 0-15sec (similar to MS-20 EG)
- looping: off, gated, auto
- inverted: on/off
- amplitude control
In looping mode EG can be used as a fancy LFO with the shape composed by four linear, exponential or sinusoidal segments with the duration specified by Attack, Hold, Decay, Sustain and Release controls.
You can download Midi2CV Mk2, MidiARP and MidiSEQ source code using the following links:
Midi2CV Mk2: midi2cv_mk2_112_src
The code can be built using WinAVR-20100110 toolchain available here: https://sourceforge.net/projects/winavr/files/WinAVR/20100110/
Have fun hacking!
Here are a few variants of acrylic MidiGAL cases, the clear green glass ones are usually in stock and are sold for $30 with all the required hardware: 4 x 10 and 22mm stand offs, 8 x top and bottom panel screws (hex head), 4 x side screws with nuts, switch knob, encoder knob and plastic bottom sticker pads.
MidiSeq firmware has been updated to v0.97: MidiSeq_097. This update adds Program Change handling options: now the sequences can be changed externally using Program Change events. Also added ability to disable sequence transposition.
Long overdue MidiSeq MIDI step sequencer demo video is now available:
MidiSeq is a polyphonic MIDI step sequencer with some great features, such as note step advance, step modifiers (tie, half, strum, and accent), super stable internal clock, nice swing and two modulation sources with velocity, after touch and CC destinations. More details here.
MidiArp is an advanced MIDI arpeggiator with a few twists, check the details here.
MidiGAL is a simple Atmega328p based MIDI controller board featuring 8×2 LCD, MIDI IN/OUT connectors with LEDs, one encoder and one switch. It can run a bunch of different firmware variants (updatable via Sysex), including original unmodified MIDIpal firmware.
One cool firmware available for MidiGAL is MidiClk — high precision Midi Clock Tester/Generator that is capable of straightening up your DAW or iOS MIDI Clock. See more details here.
Midi2CV Mk2 is a DIY embeddable MIDI to CV/Gate converter with reasonable defaults and extensive configuration options, see more details here.
5U DDS AHDSR Enveloper Generator PCBs finally arrived: