Ready-to-play Macchiato in its plastic cabinet

Macchiato Mini Synth Digital Synthesizer


The Macchiato Mini Synth is a fun, great-sounding, easy-to-use digital synthesizer that fits in the palm of your hand. Ready-to-play or build it yourself from a fun and easy kit! Get a sleek black plastic cabinet — kit or ready-to-use — or  make your own cardstock cabinet using the provided template (cardstock not included).

Requires 9V DC power. Use a battery (not included) or pick up a plug-in power supply.

If you are an Arduino enthusiast, you can hack the open-source software that runs the Macchiato,  or download updates and flash them to your synth for a whole new sound.

Fun for DIY audio enthusiasts, geeks, hacks, 8-bit nerds, chip music heroes , teachers, musicians, kids, aunts, gramps and champs.

SKU: MMS Category: Tags: , ,

Product Description

The Macchiato Mini Synth is a versatile little 8-bit synthesizer you can build and mod yourself — or get it fully assembled and ready-to-play. It features a built-in 13-note capacitive-touch keyboard with 2-note polyphony, MIDI IN, and eight control knobs for shaping your sound.

The synth kit can be completed in an evening. It’s an easy build, suitable for ages as young as 13 (with supervision).


  • Capacitive Touch Keyboard, 13 keys, 2-note polyphony
  • MIDI IN to control your Macchiato from any MIDI device
  • Wave Shape Select: Sine, Triangle, Saw, Square
  • 4-Octave Shift: C2-C3 through C5-C6
  • Adjustable Attack & Release
  • LFO Shape Select: Sine, Saw, Ramp, Square
  • Adjustable LFO Rate, Depth and Cutoff Frequency
  • Volume Control
  • LED Power Indicator
  • 1″ On-board Speaker
  • Audio Out — accepts 3.5mm (1/8”) TRS  or TRRS male jack
  • ISP Header for PC connection (to upload software updates/mods)
  • Requires 9V DC power from battery or center-negative wall adaptor


Whether you buy the synth as a kit or ready-to-play, it comes with a template you can use to make your own cabinet from a cereal box or specialty cardstock from the craft store. Optionally, you can order a sleek black plastic cabinet, either as a simple kit or ready-to-use. Finally, with some ingenuity, you could make your own cabinet or chassis, install the synth and apply the groovy Macchiato labels.


The Macchiato Mini-Synth incorporates the Mozzi Sound Synthesis Library for Arduino by Tim Barrass, and is covered by the Creative Commons Attribution / Non-Commercial / Share alike License.. The Macchiato code was written in the Arduino environment and is available open-source on our Github page.  Arduino enthusiasts can modify the code and flash it to the synth.  Find detailed instructions in the file on Github.


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What You Will Need

Here’s everything you will need to build The Macchiato Mini Synth kit:
  • Digital multimeter, able to measure resistance
  • #2 Philips screw driver
  • Steel ruler or straight edge
  • Soldering iron, 15-50 watt
  • Wire strippers
  • Flush cutters or small diagonal cutters
  • Clamp or vise to hold the printed circuit board while soldering (optional, but handy)
  • Solder sucker or solder braid – optional, but very handy
  • Solder, 60/40 rosin core
To make your own cabinet using the provided template, you will need the following:
  • Cereal Box or stiff craft cardstock from the craft shop
  • Steel Ruler or Straight edge
  • X-Acto knife or other sharp hobby knife
  • Several push pins or thumbtacks
  • Scissors
  • Butter knife
  • A few small binder clips or large paper clips
  • Rubber cement
To build the plastic cabinet kit, you will need the following:
  • X-Acto knife or other sharp hobby knife
  • Steel straight edge
  • Scissors
  • Some medium and fine sandpapers (180, 240 and 320 grit)
  • Plastic cement
  • Super Glue
  • A few binder clips


  • Detailed instructions for assembling the synth kit, making a cardstock cabinet, or building the plastic cabinet kit
Download Cardstock Cabinet Template (264kb PDF).
  • Your Macchiato includes this template, but if you need another, here it is. Requires 11x17 printer!
  • Get playing fast!
  • Detailed reference material explaining every control
All source code is available on our Github repository. See the README for detailed instructions on how to:
  • Download the setup files needed for your Arduino installation to compile for the Macchiato's ATmega644PA microcontroller
  • Download the Arduino sketch (file suffix .ino) and modify it to your heart's content. Please participate in the future development of Macchiato on our Github repository.
  • Download the original binary, or "hex" file (extension .cpp.hex). This is the code that was on your Macchiato when we shipped it. Use this file to restore the Macchiato in case your hacks are unsuccessful.