Mutable Instruments Module Tester 2022 - Acrylic/Green

Note: the outer casing was a prototype, hence looking a bit "rough", but the unit is fully functional and was sparsely used only in a private, smoke-free studio (as a callibration/troubleshooting unit for other modules).

If you like building your own Eurorack synth modules but prefer to test them before subjecting your rig to possible shorts and firey carnage, this project is for you!

Rebranded in accordance with Mutable Instruments wishes (as The Noodle Toaster), the Eurorack Synth Module Tester is a compact, portable blend of bench power supply, MIDI to CV converter, frequency counter, and function generator, tailored to the needs of DIY synth fans, module designers and contract manufacturers.

If you have modules made by a contract manufacturer, you can supply them with one of these for testing purposes, there is scope to modify the code to run specific test programs due to it's open source nature.

If you sell Eurorack modules, you'll like using this to test returns.

Features:
Audio output, square, saw, sine, ramp, triangle waves.

Functions as a basic standalone DIY synth, play notes by plugging in a midi keyboard (outputs notes as 1v per octave CV from the CV output, making this a midi-cv converter too).

Use the gate input to trigger notes from the audio out instead of a continuous tone.

All the above waveforms available simultaneously as an LFO (LFO waveform individually selectable), at a selectable 5,10 or -5 to 5 volts.

Clock output

Audio input allows VCO's to be calibrated, the code includes a frequency counter for doing this.

Mutable Instruments discontinued the Module tester pcb years ago.

This is an improved spec of the official MI PCB with this beautiful quality gold plated board made in England at our local high end PCB plant, unlike cheap PCB's that manufacturers claim to do a 100% E-test on, but which often aren't done properly, allowing board defects that can make troubleshooting DIY kits a nightmare. The PCB is fully electrically tested for your peace of mind and troubleshooting pleasure (or lack of troubleshooting pleasure with any luck!).

These PCB's are produced in accordance with the highest environmental protection standards, our manufacturer goes above and beyond whats required by law to minimise pollution and maximise sustainability, a real pleasure to solder, these are the best synth DIY PCB's available!