ARPMINI

Arpmini is a powerful mini MIDI processor that offers advanced features such as an arpeggiator, note/drum sequencer, and editor. It’s designed to control external MIDI instruments for live performances or music production.

ARPMINI REQUIRES Arpmini-Core TO WORK CORRECTLY!

Give that dusty old synth in your closet a fresh new life! Unlock a ton of advanced features and unleash your creativity with Arpmini

Its features include:

Simple and intuitive UI

MIDI Tracker and Piano Roll–style sequence editors

Four backlit buttons, mappable and controllable via MIDI CC

2 MIDI outputs and 2 MIDI inputs - using the MIDI-TRS standard

Integrated MIDI->USB / USB->MIDI interface, fully compatible with Mac, Windows, Linux, Android and iOS

32KB of memory to store up to 60 songs and various global settings

Import/export songs between Arpmini and your computer using Arpmini Editor

Built-in speaker for acoustic feedback and metronome and much much more!

Arpmini Modes

Arp Mode: Arpeggiates the played notes based on the selected arpeggio style.

Rec Mode: Records and plays back up to 8 patterns of variable length, with a maximum of 32 notes each.

Song Mode: Allows to chain up 8 recorded patterns, in any desired order.

Live Mode: Allows the playback of one of the 8 different patterns, each assigned to one buttons/multi-button-combo.

A simulated demo of Arpmini can be explored on Wokwi via the link https://wokwi.com/projects/430279970010982401

Build your own Arpmini by following the Assembly Guide!

Schematic and PCB design here

Enclosure 3D model here

External labels here

Pro Micro: https://amzn.eu/d/if0r67j

Oled Display (blue): https://amzn.eu/d/c0RTBxJ or Oled Display (white): https://amzn.eu/d/1IbVAiL

Buttons: https://amzn.eu/d/7UyjFKx

Buzzer: https://amzn.eu/d/fEAc4UO

Screws: https://amzn.eu/d/e37jcLp

Brass inserts: https://amzn.eu/d/hlBMRaH

Pin Headers: https://amzn.eu/d/9up7Byu

3.5mm Stereo jacks: https://amzn.eu/d/9LeCoT1