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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:
- TRS jack
- Midi BLE
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
overview of MCU controllers
different ESP32 microcontrollers