diy module tester

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diy module tester


diy module tester

courtesy of the designer, certain projects are available for diy under CC-BY-SA license

the pcb is blue w/immersion gold finish

pcb+pc bundle includes the pcb and the pre-flashed ATMEGA644PA-PU 8-bit Microcontroller

the acrylic case kit can be ordered separately- includes the acrylic case parts and required hardware


the full kit includes everything you need-- pcb, all parts, clear acrylic case , power cable, hardware, and the ATmega processor is pre-flashed for you.

we've even included little rubber feet so your new module tester doesn't get scratched on the workbench!

this is a diy project with some documentation available via github and diy forums. we do not provide supplemental build documentation so please be comfortable with DIY and the existing sources of documentation before ordering this kit. 

it's an invaluable addition to every workbench!


clock signal generator

  • Tempo is the tempo of the clock, in beats per minute.
  • Resolution is the number of clock ticks per beat. For example, a tempo of 120 beats per minute with 8 ticks per beat corresponds to a clock frequency of 960 ticks per minute (16 Hz).
  • Pulse is the duration or duty cycle of a clock pulse.
  • MIDI allows the clock rate to be controlled by an external computer or sequencer.

gate signal generator

  • Period is the period of the signal.
  • Pulse is the duration or duty cycle of a gate pulse.
  • MIDI allows the gate signal to be generated from an external keyboard. In gate mode, the signal is high whenever a key is pressed on the keyboard. In trigger mode, a pulse is emitted every time a key is pressed – irrespectively of the duration of the note.

control voltage generator

  • Mode controls the output waveform: triangle, square, ramp up, ramp down, sine, 1 octave arpeggio (alternates between 1V and 2V), 2 octave arpeggio (alternates between 1V and 3V), chromatic scale (goes from 1V to 2V by 1/12V increments).
  • Period controls the period of the generated signal or sequence.
  • Range controls the amplitude and polarity of the signal: bipolar signals with a 2V, 4V or 10V amplitude; unipolar signals with a 1V, 2V or 5V amplitude. This setting is ignored when one of the arpeggio/scale modes are selected.
  • MIDI allows the voltage produced by this generator to be controlled by a MIDI message from an external keyboard.

audio generator

  • Shape selects one of 4 waveforms: saw, square, triangle, sine wave.
  • Frequency selects the signal frequency. A few fixed frequencies are available, the remaining values are musical notes.
  • Envel. allows an external signal to “shape” the tone produced by this generator. In gate mode, the signal is on whenever the signal at the Gate In input is high. In trigger mode, the signal has a decreasing envelope, which is retriggered on raising edges of the Gate In signal.
  • MIDI allows the audio generator to be played from a keyboard.

audio input

the encoder selects between 3 units:

  • Frequency (Hz)
  • Note and detuning (MIDI standard + cents)
  • Interval. In this mode, the musical interval between the current stable note and the previously played note is measured. This interval is expressed in cents. 1 octave = 1200 cents.

gate input

The first line displays either the period, frequency, and tempo of the incoming signal.
The second line displays either the duty cycle, or the duration of the positive edge of the signal.


Kit Parameters
Build Difficultymoderate
Parts Count49
SMT partsnone

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  • Views: 1873
  • Brand: synthCCube
  • Product Code: DIYMODTSTRMSTR
  • Availability: 30
  • $20.00
  • Ex Tax: $20.00

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Tags: diy, module, tester, format, kits, diymodtstrmstr, synthccube