Spiega documentation

Article: midi_hub

What spiega is about

midi hub

Synths have nice sounds but often lacks good capability to be played with expression especially if you don't have a dedicated player on each instrument. Current midi sequencers, despite some being generative, they like a nice touch. Arpeggios sounds repetitive and melodies trivial.

A midi hub is a device that can receive simple inputs (a chord sequence) and generates multiples outputs (drums, melody, harmony). The sequence is sent across multiple channels with consistency.

The midi output:

The input is midi via TRS jack and we add an optocoupler to avoid to mix currents.

The hardware is:
* ESP32: for cheap MCU with WiFi module
* M5Stack: for ESP32 with built in battery and touch screen

MCU

overview of MCU controllers

MCU

different ESP32 microcontrollers