We are now offering a PCB/Panel set and Enclosure for this project. These items are all manufactured with the blessing and support of Mutable Instruments. For the PCBs we use same PCB manufacturer as Mutable Instruments, to the same specifications and finish.
- Enclosure with Anodised Aluminium panel (with high quality Aluprint legend) with a smoked black lens over the display and black Acrylic sides and bottom. No fixings are included.
- PCB with Ready Programmed Logic Chip
Full information on the this unit is here.
NOTE: neither Thonk or Mutable Instruments provide formal build or part sourcing support for this project. This is NOT a beginners project. There is a thread on Muffwiggler for community support here, and on the Mutable Instruments community forum here.
Please read the important information below about the display lens and BOM considerations
BOM CONSIDERATIONS – IF YOU ALREADY HAVE A BUILT TESTER PCB AND ARE CONSIDERING BUYING THE ENCLOSURE THEN READ THIS SECTION CAREFULLY
DISPLAY LENS INFORMATION: If you have an existing tester build you will most likely need to
remove the display Lens in the Aluminium panel first. In order to fit the display behind the lens you must use a display which does not protrude further than XX mm from the surface of the PCB, these are readily available on eBay. The display part number recommended in the official Mutable BOM will not fit behind the lens as you won’t have enough thread on the PJ301BM jacks, in this case you need to remove the lens before fitting your completed tester PCB into the case. We also recommend that you solder the PJ301BM minijacks LAST when using the lens. Solder everything other than the jacks, put the jacks into place but DO NOT SOLDER yet, attach the panel and fit the nuts to the jacks. Make sure the jacks are aligned and then solder. They will be lifting up from the surface of the PCB slightly but they do work.
ENCODER INFORMATION: The part specced in the official Mutable BOM has a shaft length that 
extends 20 mm from the PCB surface, when using the Aluminium panel with the Lens the shaft extends 5mm from the panel, this is just about workable but Ideally an encoder which extends 25mm from the PCB surface would be better.
The example below is of the original Mutable enclosure with Acrylic front panel. We have maintained exactly the same design but added an Aluminium front panel.
Several problems werefaced during the development of the Mutable Instruments Eurorack modules, the module tester solves these.
- How to power and test a module during development? Bench-top power supplies are cumbersome (especially for projects requiring 3 supply rails) and standard test equipment is sometimes useless or frustrating for quantities like musical notes or V/Oct scales. On the other extreme of the scale, who would run the risk of putting a half-built prototype in a rack loaded with thousands of euros worth of modules?
- What kind of setup to use for factory testing?
- How to take a project away from the lab without carrying heaps of “dependencies”?