---> Please dont ask for code <---

...one thing is, I am still a beginner, you wouldn't learn much or might learn things in a way, they are not intended to be learned. The other point: maybe the one or other thing will result in a commercial project some day.

Project 1 - Analog 8-Step Sequencer with Midi-Synchronisation 02/2009

Features

• 8 steps, 2 rows
• adjustable glidetime and gatetime
• midi-in for Start/Stop/Sync
• speedselector for 4th, 8th, 16th and 'advance by note'
• last-step-dial from 2 to 8
• batterypowered
• ...

... on to the sequencers projectdescription - WITH VIDEOS!

Project 2 - Custom Midifilter 03/2009

Features

• Dip-Switches to select data to be filtered
• selectable filter for programchange, pressure, sysex, realtime, note, controller and pitchbend
• selective controller-numbers to be filtered

Project 3 - mididata-transformer to misuse Roland MC909-interface as a hardware programmer for Korg DW8000 and Kawai K3m 04/2009

Features

• realtime-transforms standard midicontroller-data into SysEx-data for a Korg DW8000 or a Kawai K3m
• cheap, simple hardware: 2 jacks for midi-in/out

... on to mc909-mididata-converters projectdescription - WITH VIDEOS!

Project 4 - 'TinyRhythm' - µController-drumsynth 05/2009

No samples, just digital synthesis with noise, squarewaves, envelopes. The first test sounds resembled a bit on the c64 sid.

Features

• midi to trigger interface, velocitysensitive
• learnfunction for setting midichannel
• 5 (or 8?) voices, each with 4 parameter-knobs
• each voice based on cheap 8bit-tiny13-controller
• as FEW electronic parts as necessary
• individual-outputs
• modular hardwaredesign with standardized connectors -> easyly interchangegable soundmodules
• CUTE hardware design

... on to the projects page for the TinyRythm

Project 5 - Midi/CV-Interface, MS20-style LFO and LFO/Oscillator 12/2009

I have an old analogue Monosynth on CEM-Chip-Base which i always wanted to pimp up with a midi-interface and 2 LFOs. I finally found the time to build them on one standard eurosize drillingboard.

Feature of Midi/CV-Interface

• Few parts, cheap with only a simple 1€-DAC and a 4051 multiplexer
• outputs for CV, Gate, Modulation and a learnable controller
• lernable midichannel
• outputs for clockpulses and a note-on-pulse to sync/restart lfo2
• switch for single/multiple-trigger
• ->this came out quite bad. 8 bit are to few to have clean cv over range of 5 octaves, i have to change the dac and obviosly the hardware when i am motivated again

Features of LFO2

• waveforms: saw/tri, square and sample/hold
• waveform-pot like on MS20 -> from saw-up over triangle to saw-down
• syncable to midiclock
• fade-pot for slowly incoming lfo synced by note-press
• one-shot-mode for using it as simple envelope (saw/tri-wave) or delayed gatepulse (when using squarewave) or 'random-not (when using sample/hold-wave)

Features of LFO1/Oscillator

• midi-input to follow incoming midinotes (highspeedmode )->can be used as third oscillator
• 8 waveforms in both highspeed and lowspeed-mode
• lowspeed waves are calculated to ideally use the 8 bit of the dac
• highspeed waves built with 4bit-lookuptables

more infos and pics and audio soon...

Project  6 - Midi/Trigger-Interface for Roland CMU800 12/2009

Midi for the internal 8 Drumvoices and 8 additional triggersignals because this piece of gear has so much 3.5mm jacks.

this way for more info and and a video :)

Project  7 - 'TacBam' - 7voice drumsynth in 'Tascam'-Multitrack-Case 06/2010

Features:

• environmentfriendly recycling of a notUsedAnymore Tascam-Multitrackrecorder
• 7 drumvoices, each with an Atmega8, 4 parameters tweakable
• built in midi-trigger-interface, 7 voices+accent
• simple programming in dr55/303-style: one button for NOTE, one for PAUSE
• realtime punching-in for notes or pauses
• 2-digit LED-display (also recycled) for selection of pattern or drumtrack to be edited
• save/load for 24 patterns
• 4/4, 5/4, 6/8 timing
• shuffle
• syncing to midi-start/stop/clock (can be switched off)
• supersimple schematic, as few parts as possible

more info