Do-it-yourself USB MIDI interface – PCB ONLY, NO PARTS OR PANEL INCLUDED
Mutable Instruments dreamt of a really simple DIY project – so simple that it would allow beginners to enter the world of DIY with a big smile – and yet, interesting enough to be useful in any kind of Eurorack setup. That’s how the CVpal was born! There are only 25 parts to solder; but is an incredibly useful tool allowing you to connect your computer or iPad/iPhone (with camera connection kit) to your modular system or (neo-)vintage analog equipment.
The CVpal features a large palette of control modes – monophonic with velocity and extra square oscillator, monophonic with clock outputs, duophonic, dual monophonic, or even quad trigger conversion! Its 12-bit DAC with an 8-point software calibration curve makes it more accurate than more expensive products.
- Plenty of modes (mono CV/Gate/Velocity/Square digital oscillator ; duophonic and dual channel modes ; 4 note trigger conversion ; CC to CV conversion…)
- Digital calibration provides better accuracy than offset/scale trimmers
- Gates are +5V CV’s are +4V
- 1ms latency on OS X and Linux, 8ms latency in Windows
- 40 mm Depth
The CVpal is class-compliant but uses an usual USB setting (1ms poll-rate in low-speed mode) not well supported on Windows.
Optimal latency is obtained with OS X >= 10.6.3 ; iOS ; or Linux >= 2.6.
On other systems, the CVpal will work but messages will be delayed by up to 8ms.
- Monophonic with velocity
- Monophonic with velocity and square oscillator
- Dual monophonic
- CC conversion
- Monophonic with CC
- Quad triggers
- Quad gates
- Monophonic with MIDI clock output
Range and standards:
- CV outputs: 0 to 4V, V/Oct (4 octaves).
- Gate outputs: Positive V-trig, ON = 5V ; OFF = 0V.
- Resolution: < 2mV.
- 8 points calibration curve for non-linearity compensation.
- Temperature dependency: +/- 2 cents within the 10° C to 80° C range.
- Output impedance: 220Ω (rule of thumb: 2 cents drop per connection to a CV input).
USB-bus powered, current draw < 20mA.