W138 MIDI Interface

Our MIDI Interface allows our modular system to be controlled with an external MIDI device, such as a keyboard etc.
 
It hosts a range of simple, but effective features, including a note output with a typical CV deviation of only ±1 cent (±0.001V) over eight octaves. This range can be offset using a trimmer on the PCB as desired. The note output also has a glide control (glide time of approximately 0s to 0.5s) that allows portamento to be added.
 
Other CV outputs include pitchbend (±0.5V), control change (0V to 10V) and velocity (0V to 10V). The pitchbend CV is also normalled to the note output for simultaneous use. The control change (CC) output can be changed between CC1 (modulation wheel), CC71 (resonance) and CC74 (frequency cutoff) using a switch on the front panel.
 
Gate, trigger and clock outputs (5V) are also provided with LEDs on the gate and clock outputs to indicate the output level. The clock output produces 4 PPQN.
 
The MIDI channel can be changed from 1 to 16 using jumpers on the PCB.
 
Finally, the note priority to be switched on the front panel between last, highest or lowest:
 
Last note: the most recent note played will be sounded. When that note is released, the next, most recent note still being held will be sounded.
Highest note: when multiple notes are sounded simultaneously, the highest note being held will be sounded. When the highest note is released, the next highest note will be played etc.
Lowest note: same as when set to highest note, except the lowest note being held will be sounded.
 
Features
Simple but effective functionality.
Precision 12-bit DAC for note output.
Note output has a typical CV deviation of only ±1 cent (±0.001V) over eight octaves and portamento control with a glide time of approximately 0s to 0.5s.
CV outputs including pitchbend (±0.5V), CC (0V to 10V) and velocity (0V to 10V). The pitchbend CV is also normalled to the note output for simultaneous use.
The control change (CC) output can be changed between CC1 (modulation wheel), CC71 (resonance) and CC74 (frequency cutoff) using a switch on the front panel.
Gate, trigger and clock outputs (5V) with LEDs on the gate and clock outputs to indicate the output level. The clock output produces 4 PPQN.
MIDI channel can be changed from 1 to 16 using jumpers on the PCB.
Note priority can be changed between last, highest or lowest using switch on the front panel.
Ergonomic design.
Hand-built and tested in the UK.
 
Specifications
Model number: W138
Format: Eurorack
Width: 7HP
Depth: approx. 40mm
Power consumption:
+12V: 40mA
-12V: 10mA
+5V: 0mA
 
Documentation
Manual - Download
 
Delivery
Please see our Delivery Policy for more information.