Controllers and Editors for Synths, Keyboards and Effects

 FVC - Four Voice Controller Features Polyphonic control of 4 MIDI channels All keyboard modes from original Oberheim FVS except REASSIGN 2,3 or 4 voice operation Continuous or Reset poly mode Split Split Mode 1 -3 or 3 - 1 Unison Freeze 1 x ADSR envelope per channel use for VCA or VCF  Max CV Output = 5V Faux Vibrato LFO - Triangle wave offset added to Pitch Bend message Adjustable Pitch Bend and Split Point 64 Patch Memories - recalled with MIDI Program Change Envelope, Split, Pitch Bend range and LFO speed all saved Requires MIDI Controller keyboard All functions are controlled with CC numbers MIDI IN and MIDI OUT (modules need to have MIDI Thru) Suitable for Behringer Model D, Pro-1, Cat and K2 Will run with 2-XM but ADSR output is only 5V and 2-XM wants 10V but still usable! This is the stripped down version of the 2-XM controller CC Numbers  16 - Pitch Bend On/Off voice 1 17 - Pitch Bend On/Off voice 2 18 - Pitch Bend On/Off voice 3 19 - Pitch Bend On/Off voice 4...

The Pro Micro  How to get the projects If you are interested in building any of these projects please contact me for details. I don't supply any parts but you can buy the Arduino sketches and a full set of instructions to build the project yourself from £10 . You will get circuit diagrams, PCB layout and a complete parts list for UK suppliers. If you are in the UK I can provide a pre-programmed and pre-soldered Pro Micro for around £20 plus postage. You can contact me via the comments sections. Alternatively,  email me at  gmail - my name is chaz riff but without the space ;) Behringer 2-XM Polyphonic Controller This is the latest project - a four voice controller for the Behringer 2-XM. This is based on the Oberheim SEM which was the synth module that was in the famous FVS (Four Voice Synthesiser) from 1978. This project uses 2 Pro Micros connected via the TX and RX pins. I needed 2 because it requires 32 ins and outs.    Low Cost Polyphonic Keyboard Controller...

Behringer 2-XM Polyphonic Controller This is the latest project - a four voice controller for the Behringer 2-XM. The 2-XM is based on the Oberheim SEM which was the synth module that was in the famous FVS (Four Voice Synthesiser) from 1978. I was lucky enough have one of these (courtesy of the record company!) and used it for live and recording until the mid 80s when it died! I still have one of the modules but the rest is long gone. I had given up all hope of ever replacing it until Behringer announced 2-XM which is a faithful but smaller recreation of the modern SEM (2000s). Each 2-XM is actually 2 SEMS  - can you see why it's called the 2-XM ;)  so if you have 2 units and a controller you would have the equivalent of the mighty FVS. More information about ordering and building  here Here is the finished prototype.... Here's a short video of the Keyboard Logic (no sound)  2-XM Controller Features Polyphonic control of 2 units for emulation of the FVS All keyboard ...